Introduction to Linux - Chapter 1 - 14
Shell command man pages are typically located in section ___. 1 3 4 2
1
To save and then quit, you can type in command mode: :wq :q :qw :WQ
:wq
What character do you place between commands to execute multiple commands on a single command line? ; & : ~
;
The path testdir/file.txt is: An invalid path A relative path A circular path An absolute path
A relative path
The path /data/file.txt is: A circular path An absolute path A relative path An invalid path
An absolute path
To switch to another group, you must: Be a member of the group that you are switching to Be logged in graphically Log off and log back in Log in as the staff user
Be a member of the group that you are switching to
gzip and bzip are aliases for the same utility. True or False? True False
False
Local variables are: Are not a valid type of variable Passed into other shells and commands Only available to the shell they are created in Not used by shells at all
Only available to the shell they are created in
The _____ variable stores directories that the shell used to find executable files. CD DIR PATHS PATH
PATH
Which of the following functions is not a primary use of the tar command: Extract archives View archives Create archives Repair corrupted archives
Repair corrupted archives
The rm command can be used with glob characters to delete multiple files. True or False? True False
True
The touch command can be used to change a file's time-stamp to something other than the current system time. True or False? True False
True
The unzip command can be used without options to extract files from a zip archive. True or False? True False
True
Bash is: a website a networking term a shell an operating system
a shell
Which command can change the user owner of a file? chown own pawn chpawn
chown
The _____ command will search for files by searching the live filesystem. find locate search updatedb
find
If you want to set the maximum line width for a text file, you can use: od fmt pager format
fmt
To view statistics on memory availability, you can use: mem stat free uname
free
To view system memory usage, you can use the _____ command. uptime nice free ps
free
To decompress the archive example.gz, use the following command: gunzip example.gz gunzip -x example.gz gzip -u example.gz gzip -x example.gz
gunzip example.gz
If you want to move a character to the left in vi command mode, you can press the left arrow key or: l h j k
h
To see a list of commands that are available while viewing a man page, you can type the __ character. w h g c
h
Which type of link is indistinguishable by programs from regular files, hard or soft? soft hard
hard
Which of the following is not a valid argument for the dd command? count in if bs of
in
When copying entire devices using the dd command, you must specify: block size and count only input file and output file only input file, output file, and block count input file, output file, block size and count
input file and output file only
By default, tar will attempt to extract an archive... into the working directory. to the specified directory. into the archive's parent directory. into the user's home directory.
into the working directory.
If you want to move down a line in vi command mode, you can press the down arrow key or: l j h k
j
If you want to move a character to the right in vi command mode, you can press the right arrow key or: l k j h
l
When viewing a file with the ls -l command, which character represents a file type of soft link? - d f l
l
Which character at the beginning of a long listing indicates a symbolic link? d c - l
l
Which of the following commands will create a soft link from the /tmp/test file to the /tmp/data file? ln /tmp/test /tmp/data ln /tmp/data /tmp/test ln -s /tmp/test /tmp/data ln -s /tmp/data /tmp/test
ln -s /tmp/test /tmp/data
The _____ command will search for files using a database of all files, which is generated daily. find locate search updatedb
locate
Which of the following commands will take the standard error of the ls command and put it into the /tmp/output.txt file: ls 2> /tmp/output.txt ls | /tmp/output.txt ls 2 | /tmp/output ls > /tmp/output.txt
ls 2> /tmp/output.txt
Which command is used in order to view the manual page for a topic? show man help doc
man
Which command will allow you to switch to another group and add files that are group owned by this other group? chgrp switchgrp newgroup newgrp
newgrp
What command can be used as a prefix to another command to run it at an altered priority? low chpr nice pri
nice
If you want a file to be displayed with its lines numbered, you can use: nl cut fmt number
nl
If you want a background process to keep running after log out, you can use: nokill nohup nofg bg
nohup
If you are in vi command mode and want to add a new line after your cursor, you can type: o O i a
o
This command displays binary files in a variety of representations: od format cut cat
od
Which command will merge two files together line by line? combo paste join merge
paste
To change the niceness value of an existing process, you can use the _____ command. renice set reset nice
renice
What command can be used to alter the priority of a running process? repri renice relow chpr
renice
What permissions are typically placed on soft link files? ——— rw-rw-rw- rwxrwxrwx rwx——
rwxrwxrwx
Which of the following is a non-interactive editor? ed vi nano sed
sed
Environment variables cannot be declared by which command? typeset declare export set
set
To view all current variables, you can use: dump var view set
set
Which permission is used to make a directory so that only root, the owners of files or the owner of the directory can remove them? sticky bit setgid write setuid
setgid
To execute a command called "simple" as a foreground process, you would type: fg simple simple & foreground simple simple
simple
Many commands that read text files will also read from this stream: pipe stdin redirect input
stdin
A soft link is also called a _____ link. symbolic indirect true false
symbolic
Which of the following commands could be used to extract the archive, example.tar? tar -uz example.tar tar -xz example.tar tar -xf example.tar tar -uf example.tar
tar -xf example.tar
The file command uses _____ to determine file types. magic the "magic" file alchemy a random number generator
the "magic" file
To move forward one word at a time in the vi command mode, you press: f t g w
w
Which archiving method is compatible across Linux, Microsoft Windows and Mac operating systems? cpio dd zip tar
zip
Which two symbols can effectively redirect stdin to a command? (choose two) > ! | <
| <
Which file can you place in your home directory to be executed when you log off the system? /etc/bashrc ~/.bash_logout ~/.bashrc ~/.bash_profile
~/.bash_logout
Which of the following files is specific to each user and executed only during login? ~/.bash_profile /etc/profile /etc/bashrc ~/.bashrc
~/.bash_profile
Which of the following files is specific to each user and executed every time a bash shell is opened? ~/.bashrc ~/.bash_profile /etc/bashrc /etc/profile
~/.bashrc
Long command options are preceded by which two characters? && — || **
—
Which two characters do you use to tell the command that you are finished providing options and that the remaining data on the command line is arguments? — ** || &&
—
Which of the following commands will execute the last command that started with ec: !! !!ec !ec !-ec
!ec
Which two characters represent the empty string? ** && .. ""
""
Which of the following is not used for globbing? [ # ? *
#
To navigate to the end of the line in vi command mode, you can press: # ^ $ *
$
Placing an __ character at the end of the command line will put the command in the background. ! & B ?
&
To send the normal and error output of a command to a single file, you can use: 2> > 1> &>
&>
Which glob character matches "zero or more characters"? . ? * [
*
Which regular expression character matches zero or more of the previous character? ? + * .
*
Which of the following regular expression characters is an extended regular expression character? + . $ *
+
Which regular expression character matches one or more of the previous character? - $ * +
+
Which character at the beginning of a long listing indicates a regular file? l d - c
-
To execute a command with the highest possible priority, which value do you pass to the nice command? -20 19 0 20
-20
Which option to the ls command will sort the output by size instead of alphabetically? -r -s -S -t
-S
To maintain timestamps when using the cp command, use: -T -A -a -t
-a
Use the ___ option to display hidden files with the ls command. -A -h -D -a
-a
Which option to the gzip command can be used to retain the uncompressed files when creating an archive? -R -F No option needed, gzip does this by default -c
-c
Which option to the find command will execute a command on each matching file without prompting the user? -exec -ok -ls -print
-exec
If you want to use grep without regard to the capitalization of text, you can use the option: -t -v -i -r
-i
Which of the following options puts the cpio command into copy-in mode? -i -u -o -v
-i
Which option for the rm command will cause it to prompt before deleting files? -I -p -i -a
-i
Which option to the locate command will have the command perform case-insensitive searches? -I -g -i -s
-i
Which option to the ls command displays the inode numbers of files? -inum -i -l -N
-i
Which option to the find command will search by name using a case-insensitive match? -iname -inum -insen -i
-iname
Which option to the find command will search by name using a case-sensitive match? -mmin -iname -cmin -inum
-iname
What option to the find command allows you to search for files by inode numbers? -links -ipath -inum -mtime
-inum
What option to the kill command will list the signals for the system? -9 -list -l -r
-l
Which option to the unzip command can be used to estimate the size of an archive when it is decompressed? -l -c -R -F
-l
Which option to the zip command will list its files without uncompressing them? -R -l -c -F
-l
Which option to the find command will display a "long listing" of matching files? -ok -exec -print -ls
-ls
Which of the following options puts the cpio command in copy-out mode? -v -u -o -i
-o
Which option to the find command will prompt the user to execute a command on each matching file? -print -ok -ls -exec
-ok
You can pass arguments to long options by using which of the following techniques: (choose two) -option{argument} -option~argument -option=argument -option argument
-option=argument , -option argument
Which mkdir option should be used to create parent directories (that don't already exist) along with the specified directory? -F -d -A -p
-p
Which option to the ls command will reverse the sort order? -t -r -S -s
-r
Which option to the zip command can be used to recursively compress multiple directories? -r -R -l -d
-r
Which option(s) for the rm command can be used to delete directories that contain files? (choose two) -r -R -A -D
-r , -R
To copy the contents of a directory, use the following option(s) for the cp command: (choose two) -A -r -d -R
-r , -R
The _____ option to the uname command will display the kernel name. -s -x -k -n
-s
Which option to the ls command will sort the output by time-stamp? -t -s -S -r
-t
Which option to the find command will search by file type? -type -fstype -ftype -file
-type
Which of the following options allows the cpio command to overwrite existing files? -u -v -o -i
-u
Which option to the find command will search by user owner? -user -person -owner -uowner
-user
Which option for grep will invert the pattern matching results? -i -v -r -o
-v
Which option to the bzip2 command can be used to report the compression ratio of an archive? -l -R -v -c
-v
The names of hidden files begin with the ___ character. * > + .
.
When specifying a path, the __ character symbolizes the current directory. .. / ~ .
.
Which regular expression character matches any one character? . ? + *
.
bzip2 archives are typically indicated with which file extension? .bz .bz2 .b2 .gz
.bz2
An absolute path always starts with which character? . / ~
/
To search for something while viewing a man page, you first type a __ character. > | < /
/
To search forward from your cursor in your vi document in command mode, you can type __ followed by the pattern to search for. / | ?
/
Which directory represents the root of the primary filesystem hierarchy? /var / /etc /root
/
Which directory is used to store the kernel? /kernel /etc /boot /
/boot
Which directory is used to store files representing attached devices? /tmp / /dev /mnt
/dev
Which directory is used to store configuration files specific to the host? /etc / /boot /var
/etc
Which of the following files is for all bash shell users and executed every time a bash shell is opened? /etc/bashrc /etc/profile ~/.bashrc ~/.bash_profile
/etc/bashrc
The output of the ls -l command includes "/etc/grub.conf -> ../boot/grub/grub.conf". Based on this information, which is the soft link file? ../boot/grub/grub.conf Both Neither /etc/grub.conf
/etc/grub.conf
The location of users' default shells is stored in the ______ file. /etc/passwd /etc/group /etc/gshadow /etc/shadow
/etc/passwd
Which of the following files is for all bash shell users and executed only at login? ~/.bash_profile ~/.bashrc /etc/bashrc /etc/profile
/etc/profile
Which directory is used to store user home directories? /homedir /home /usr /tmp
/home
Which directory is used to store essential libraries? /usr /bin /var /lib
/lib
What directory is used as a temporary mount point? /xbin /mnt /tmpmnt /etc
/mnt
Which directory is used for the home directory of the root user? /var / /root /home/root
/root
Which directory is used to store temporary files? /temp /tmp /etc /
/temp
To execute a command with the default priority, which value do you pass to the nice command? -20 20 19 0
0
What umask value would you use in order for new directories to have the permissions of rwxr-x-x? 027 077 022 026
026
To execute a command with the lowest possible priority, which value do you pass to the nice command? 0 20 -20 19
19
To go to the first line of a vi document in command mode, you can type: (choose two) G GG 1G gg
1G , gg
Which value represents the hard link count in the following output of the ls -li command: 87589 -rw-r-r-. 2 root root 83 Mar 4 22:45 myhosts 87589 2 22:45 83
2
To redirect the errors that are output by a command, you can use: @ 2> 2@ 2&
2>
Special file man pages are typically located in section ____. 3 4 1 2
4
If a file has permissions that appear as rwxr-x—, what is the octal permission mode of the file? 760 650 750 740
750
System Administration man pages are typically located in section ___. 8 6 7 9
8
Which value represents the inode number in the following output of the ls -li command: 87589 -rw-r-r-. 2 root root 83 Mar 4 22:45 myhosts 22:45 83 2 87589
87589
In the PATH variable, the __ character is used to separate the directories. : ; ~ /
:
If you want to quit the vi program without saving any of the changes you made to your file, you can type in command mode: :a :Q :s :q!
:q!
Typing which of the following from vi command mode will attempt to save your file? :w :s :f :r
:w
If you want to overwrite a file by redirecting the output of a command, you can use: & > } |
>
If you want to append a file with the normal output of a command, you can use: 2>> > >> 1>
>>
To search backward from your cursor in your vi document in command mode, you can type __ followed by the pattern to search for. ? / |
?
Which glob character matches "exactly one character"? ? * . [
?
If you are in vi command mode and want to begin inserting text at the end of the line, you can type: o I O A
A
The glob pattern [a-d] would match: A file name with a single character that is either an "a", "-", or "d". Nothing, this is an invalid glob pattern. A file name with a single character that is either a "a", "b", "c", or "d". All files
A file name with a single character that is either a "a", "b", "c", or "d".
A signal is: A technique to tell a process to take some sort of action A command option A technique to send data to a process A command argument
A technique to tell a process to take some sort of action
The range defined inside of square brackets is based on the: Standard text table ASCII text table Invalid question as ranges are not permitted ANSI text table
ASCII text table
The command, chmod a+x will: Remove execute permission for all users Add execute permissions for the user owner Remove execute permissions for the user owner Add execute permission for all users
Add execute permission for all users
The glob pattern [!abc]* Nothing, this is an invalid glob pattern All files that start with any character except "a", "b" or "c" All files All files that start with either of the following characters: "!", "a", "b" or "c".
All files that start with any character except "a", "b" or "c"
The command echo a* will display: All of the files in the current directory that begin with an "a" character. Only the file named "a*". All of the files in any directory that begin with an "a" character. All of the files in the current directory that begin with an "a" or "A" character.
All of the files in the current directory that begin with an "a" character.
The command echo ???a will display: All of the files in the current directory that have four characters in the file name. All of the files in the current directory that have four characters in the file name with the last character being an "a" character. All of the files in the current directory that end with an "a" character. Only a file named ???a
All of the files in the current directory that have four characters in the file name with the last character being an "a" character.
For rwxr-x-x permission set, the bolded permissions belong to: The user owner and group owner of the file All users besides the user owner and group owner The user owner of the file The group owner of the file
All users besides the user owner and group owner
A command can be: (choose three) An alias A block A configuration file A variable A function A program built-in to the shell
An alias , A function , A program built-in to the shell
The tar command supports: gzip compression only bzip compression only Both gzip and bzip2 compression only uncompressed archives
Both gzip and bzip2 compression
The group ownership of a file may only be changed by: The owner of the file Any user can change the group ownership of any file The root user Both the root user and the owner of the file
Both the root user and the owner of the file
Assuming everyone has access to the directory the file is in, who can view the contents of a file with permissions of rw-r—-x? Nobody Both the user owner and group owners Only the user owner Everyone Only the group owners
Both the user owner and group owners
The two login types are: URI and CLU CLI and GUI URI and CLI GUX and CLI
CLI and GUI
The key press combination that will request a running process terminate: CTRL+z CTRL+d CTRL+p CTRL+c
CTRL+c
The key press combination that will request a process to stop is: CTRL+z CTRL+p CTRL+c CTRL+d
CTRL+z
Using the setgid permission on a directory: Causes new files created in the directory to be owned by the group that owns the directory Causes the directory to be writable to members of the group that owns the directory Causes files existing in the directory to be made executable by the group Causes files existing in the directory to be owned by the group that owns the directory
Causes new files created in the directory to be owned by the group that owns the directory
The setuid permission on a file: Causes the file to always run as root Causes the file to never run as root Causes the file to run under the owner's identity Causes the file to run under the user's identity
Causes the file to run under the owner's identity
The /usr/local/bin directory contains: The most fundamental commands that are essential for the operating system to function Nothing; it is not a valid directory Commands that have been compiled from local sources Essential administrative commands
Commands that have been compiled from local sources
The mkdir command cannot be used to: Delete a directory Create new directories Create multiple directories at once Create sub-directories in different parent directories
Delete a directory
What would typing "4dh" do in vi command mode? Duplicate the next four characters Delete the previous four characters Delete the next four lines Delete the next four characters
Delete the previous four characters
The head -n -1 readme.txt command will: Show the first character of every line of readme.txt Display all but the last line of readme.txt Number the lines of readme.txt Display the first line of readme.txt
Display all but the last line of readme.txt
The command man 5 passwd will: Display the man page of Section 5 for passwd. Print the first five man pages that refer to the term passwd. Not work; you can't give a numeric argument to the man command. Display the first five lines of the man page for the passwd command.
Display the man page of Section 5 for passwd.
The /sbin directory contains: Commands that have been compiled from local sources Nothing; it is not a valid directory The most fundamental commands that are essential Essential administrative commands
Essential administrative commands
Which permission is necessary on a directory in order for a user to use the cd command to change that directory? Read None Execute Write
Execute
It is not possible to recursively compress files within directories with gzip. True or False? True False
False
The command manual ls will provide detailed information about how the ls command functions. True or False?
False
The cpio command has four modes of operation. True or False? True False
False
The ls command can list the contents of only one directory at a time. True or False? True False
False
The rmdir command can be used to delete directories and their contents. True or False? True False
False
To run binary executables, you need both read and execute permission. True or False? True False
False
Using the kill command always terminates processes. True or False? True False
False
When you create a soft link, it increases the hard link count by one.True or False? True False
False
gzip and bzip2 use the same compression algorithm. True or False? True False
False
Two tables have columns with the same field names. What is required in order to join the two tables? Change field names in one of the tables to make it unambiguous Join between such tables cannot be created Create a dummy table which has no common fields Field names must be prefixed by the table name and a period
Field names must be prefixed by the table name and a period
The ls-l command output will not include: File permissions Timestamp Hard link count File contents
File contents
The tar command supports which of the following styles of option(s)? (choose three) DOS GNU BSD Unix
GNU , BSD , Unix
Which are valid link types in Linux? (choose two) Filesystem links Stable links Hard links Soft links
Hard links , Soft links
Shell variables are used to: Reboot the system Prevent users from logging in Hide passwords Hold critical system information
Hold critical system information
Which character(s) cannot be placed in variable names? Upper-case alpha characters Hyphen ("-") character Underscore ("_") character Lower-case alpha characters Numeric characters
Hyphen ("-") character
Select the function that the tr command cannot perform: Translate from one set of characters to another Delete specific characters Eliminate duplicate characters Insert characters
Insert characters
Which of the following are advantages of using the find command? (choose two) It can search by file attribute types It is quicker than the locate command Its results are always the most up-to-date It pages the results
It can search by file attribute types , Its results are always the most up-to-date
Which of the following are advantages of using the locate command? It is quicker than the find command Its results are always the most up to date It pages the results It can search by file attribute types
It is quicker than the find command
The uptime command prints a statistic representing the system load over what three time spans? (choose three) Last thirty minutes Last minute Last five minutes Last ten minutes Last fifteen minutes Last hour
Last minute , Last five minutes , Last fifteen minutes
The command, chmod 2777 /data will: Make the /data directory a setgid directory Make the /data directory a sticky bit directory Make the /data directory a setuid directory Remove all special permissions
Make the /data directory a setgid directory
The command, chmod 1777 /data will: Make the /data directory a setuid directory Make the /data directory a sticky bit directory Remove all special permissions Make the /data directory a setgid directory
Make the /data directory a sticky bit directory
Within square brackets, (Example: [?]) the ? character means: Match a ? character Match zero or more of any ? characters Exactly one character Nothing, it has no meaning at all
Match a ? character
How many times can you use a * glob character in a pattern? Two No limit Three One
No limit
If you are in the vi command mode and want to add a new line before your cursor, you can type: i o O a
O
The [ ] characters around day in the example cal [-smjy13] [[[day] month] year] means that day is: An argument that must be "day" and nothing else An option, not an argument Required Optional
Optional
Which of the following is a valid way to add the /data directory to the existing PATH variable? $PATH=$PATH:/data PATH=$PATH:/data $PATH=/data PATH=/data
PATH=$PATH:/data
Environment variables are: Only available to the shell they are created in Are not a valid type of variable Passed into other shells and commands Not used by shells at all
Passed into other shells and commands
The command, chmod 0777 /data will: Make the /data directory a setuid directory Make the /data directory a setgid directory Make the /data directory a sticky bit directory Remove all special permissions
Remove all special permissions
What does "|" do in a regular expression? Redirects input to the command Redirects output from the command Separates repetition modifiers Separates alternative patterns that can be matches
Separates alternative patterns that can be matches
The command, chmod u=g will: Set the group owners permissions to match the user owners permissions Set the user owners permissions to match the group owners permission Nothing, the command syntax is invalid Set the user owners permissions to rwx
Set the user owners permissions to match the group owners permission
The expand and unexpand commands change: (choose two) New lines Carriage returns Spaces Tabs
Spaces , Tabs
The PATH environment variable is used for: Specifying locations that are writable for the user Specifying directories to search for executable files Specifying directories to contain documentation Specifying locations where ordinary users can navigate
Specifying directories to search for executable files
If you have a file named /tmp/hosts pointing to a file named /etc/hosts and the /etc/hosts file is deleted, then which of the following statements is true? The /tmp/hosts file now points to nothing You can still access the data by using /tmp/hosts The data from /etc/hosts is automatically copied into /tmp/hosts before /etc/hosts is deleted It is not possible to delete the /etc/hosts file while a soft link is pointing to it
The /tmp/hosts file now points to nothing
Which of the following man page sections will provide an example of how a command is executed? The SYNOPSIS section The DESCRIPTION section The FILES section The NAME section
The SYNOPSIS section
When typing a command, you can have the bash shell complete the command by pressing which key? The Up Arrow key The Del key The Backspace key The Tab key The Enter key
The Tab key
Which command performs globbing? The ls command The echo command The bash command The display command
The bash command
The PATH variable will be used under which situation? The command is an alias. The command is not found. A full path name to a command is provided. The command is a function.
The command is not found.
By default, what does the cp command preserve from the original file? The timestamps The name The permissions and ownership The contents
The contents
The "." in an ls listing represents: Directories that can't be accessed Hidden files The end of the command output The current directory
The current directory
The ls command will list which of the following by default? The root directory The current directory Nothing; it requires an argument User's home directory
The current directory
If you have 5 hard linked files and you delete four of them including the original one, then: The file still exists, but the data in the file is deleted You lose the data from the file The hard link count goes to 0 The data is still available from the remaining file
The data is still available from the remaining file
For the rwxr-x-x permission set, the bolded permissions belong to: The group owner of the file All users besides the user owner and group owner The user owner and group owner of the file The user owner of the file
The group owner of the file
The /bin directory contains: Nothing; it is not a valid directory The most fundamental commands that are essential for the operating system to function Commands that have been compiled from local sources Essential administrative commands
The most fundamental commands that are essential for the operating system to function
The only person who can change the user ownership of a file is: The root user The owner of the file Both the root user and owner of the file Any user can change the group ownership of any file
The root user
To set a priority value lower than 0, you must log in as which user? Any user account No user can specify a priority lower than 0 The root user The adm user
The root user
For the rwxr-x-x permission set, the bolded permissions belong to: All users besides the user owner and group owner The group owner of the file The user owner and group owner of the file The user owner of the file
The user owner of the file
The syntax [-u|-utc|-universal] means: These three options are different These three options mean the same thing These are required options This is invalid syntax
These three options mean the same thing
What is NOT a purpose of using parentheses around parts of a regular expression? They can be used to make alternation more efficient They can be used to refer back to what was matched They can be used to group characters for repetition They can be used to change the order that the pattern is evaluating
They can be used to change the order that the pattern is evaluating
Which is true about hard links? They are created with the ln -s command They share inodes They can only be created by the root user They can be made to directories
They share inodes
By default, using the touch command on an existing file will update the file's _____. Timestamp Type Permissions Ownership
Timestamp
Why would you press CTRL+C when executing tail? To capture the output into a file To complete the processing of a file To stop tail from following a file To get tail to copy the text it is outputting
To stop tail from following a file
The cpio command will preserve metadata when copying files. True or False? True False
True
The dd command can be used to copy entire partitions. True or False? True False
True
The dd command can be used to create iso files. True or False? True False
True
The dd command can be used to create large files the can be used as swap files. True or False? True False
True
The mv command can be used to move more than one file at a time. True or False? True False
True
The mv command will rename a file when a new directory is not specified. True or False? True False
True
The only user with the capability to change the owner of a file is root. True or False? True False
True
To access a directory with the cd command, you must also be able to access all the parent directories of the directory with the cd command. True or False? True False
True
To run a script file, you need both read and execute permission. True or False? True False
True
User home directories often contain hidden files. True or False? True False
True
When you create a hard link, it increases the hard link count by one.True or False? True False
True
You can combine glob characters in a single pattern, for example: a??*[0-9]. True or False? True False
True
To use regular expression characters to match themselves, you cannot: Put the character in the square brackets Use the fgrep command Use the slash in front of the character Use the backslash in front of the character
Use the slash in front of the character
Which of the following will create a variable? VAR+value VAR=value VAR value Var~value
VAR=value
The FHS sets which standard? Which directories should be used to hold specific files Which partitions should be created Which filesystem types should be used Which services should be installed
Which directories should be used to hold specific files
The main advantage of running a process in the background is: The process will automatically run at a low priority You can be assured that the process will not terminate early The process will be logged You can continue to use the shell that started the process
You can continue to use the shell that started the process
To go to the beginning of a line in the vi command mode, you press: g $ ^ 1
^
Which of the following characters can be used to negate (indicate NOT matching the following characters), when placed as the first of a set of characters enclosed in square brackets [] ? (choose two) ? ^ ~ !
^ !
The regular expression a? is equivalent to: a{0,1} a{1} a{1,} a{0,}
a{0,1}
The regular expression a* is equivalent to: a{0,1} a{1,} a{0,} a{1}
a{0,}
The regular expression a+ is equivalent to: a{1} a{1,} a{0,} a{0,1}
a{1,}
To move backward through a vi document, word by word, you press: w b r c
b
To send a paused process to the background, use the _____ command. fg ps bg jobs
bg
Which option to the bzip2 command can be used for recursive compression? -v bzip2 doesn't support recursive compression -c -R
bzip2 doesn't support recursive compression
If you want to see the entire contents of a text file, you can use the _____ command: dog type wc cat
cat
Which command will allow you to change the group ownership of a file that you own? regroup chgrp chown mask
chgrp
Which commands can be used to change the ownership of a file? (choose two) chggrp chgrp chown newgrp
chgrp , chown
Which command is used to change permissions on a file? chgmode chmod chgperm chperm
chmod
To have permissions set to rwxr-x-x, you can use the following command: chmod 751 chmod 755 chmod 777 file chmod 711
chmod 751
The basic form of a command line is: command [options...] [arguments...] command [arguments...] options command arguments options command [options...] arguments...
command [options...] [arguments...]
Using the touch command and specifying a nonexistent file... prompts the user to create a file. creates a blank file with that name. generates an error. does nothing.
creates a blank file with that name.
If you want to extract fields from a file, you can use: cols extract fields cut
cut
Which character at the beginning of a long listing indicates a directory? - l c d
d
To perform cut and paste in a vi document, you actually do: delete and put yank and put yank and paste delete and yank
delete and put
Which command will send text to the terminal display: echo type print show
echo
Which of the following will match files that have the string "hello" somewhere in the file name? echo hello*hello echo hello* echo *hello* echo *hello
echo *hello*
To use extended regular expressions, you can use: (choose two) grep -e fgrep egrep grep -E
egrep , grep -E
The _____ command will take another command for the argument to execute. exit uname exec pwd
exec
To replace the currently running shell, you can use: dash bash exec csh
exec
Environment variables can be viewed by running: (choose two) export -e vars export -p env
export -p , env
The _____ command will allow you to see commands that you have previously executed. hist previous history last
history
If you are in the vi command mode and want to begin inserting text before your cursor, you can type: A i o O
i
To see the list of background processes that you have started in your shell, you can run: process jobs work list
jobs
Which command merges two files like related tables in a database? paste join sql query
join
If you want to move up a line in vi command mode, you can press the up arrow key or: j h l k
k
The core software component that tells the hardware what actions to take is called the ________. compiler kernel transmitter
kernel
Which of the following is not a valid way to send the "force kill" signal to a process? kill -KILL PID kill -SIGKILL PID kill -9 PID kill -FORCE PID
kill -FORCE PID
To send a signal to a set of processes with the same name, you can run: killall grpkill allkill sigkill
killall
Which of the following commands will stop all processes owned by the user bob? (choose two) killall -u bob pkill -u bob kill -u bob kill -l
killall -u bob pkill -u bob
Which of the following commands will create a hard link from the /tmp/test file to the /tmp/data file? ln -s /tmp/data /tmp/test ln /tmp/data /tmp/test ln /tmp/test /tmp/data ln -s /tmp/test /tmp/data
ln /tmp/test /tmp/data
To perform a "long listing" to show file details, use which of the following commands: ls -D ls -L ll ls -l
ls -l
You want to execute the ls command with two options: -r and -l. Which of the following are valid ways to run this command: (choose three) rl ls ls -r -l ls -l -r ls -r -l ls rl ls -rl
ls -r -l , ls -l -r , ls -rl
Which of the following are valid command lines? (choose two) ls /etc -l ls -l /etc ls -/etc -l ls /etc
ls /etc -l , ls -l /etc
Which of the following commands will take the standard output of the ls and put it into the /tmp/output.txt file: ls 2 | /tmp/output ls 2> /tmp/output.txt ls > /tmp/output.txt ls | /tmp/output.txt
ls > /tmp/output.txt
Which command will display more information about globbing? echo globbing man 7 globbing man 7 glob man -7 glob
man 7 glob
To view the ASCII text table in Linux, you can use the following command: view ASCII list ACSII man ASCII echo ASCII
man ASCII
Two or more commands combined with the "|" between them form a: convoy caravan command line pipeline
pipeline
The _____ command provides many options for formatting a file for printing. pr format print header
pr
The _____ command will list the commands that are running in your terminal. list ps proc ls
ps
To view all processes on the system, you can execute: ps -all ps ps -f ps -e
ps -e
The ______ command will display your current working directory. uname exec pwd exit
pwd
To display your current location within the filesystem, you can type: whereami cwd dir pwd
pwd
Which type of link can be made to a file on another filesystem, hard or soft? soft hard
soft
Which type of link can be made to directories, hard or soft? hard soft
soft
Which type of link is easier to visually "see", hard or soft? hard soft
soft
To put the lines of a file in alphabetical order, you can run: uniq sort cat paste
sort
To process a script file in the current context, you execute: (choose two) . include source exec
source , .
If you want to break apart a large file into smaller files, you can use: split cat break dump
split
This stream is the output of a command operating normally: stdout stderr stdin stdnorm
stdout
A popular program for monitoring running processes in real-time is: watcher mon top ghost
top
In order to run a command called "tough" in the background, you would type: start -b tough tough& tough@ bg tough
tough&
The _____ command will tell you if a command exists as a built-in command, function, alias or a command located within the PATH variable. set export declare type
type
Which command can be used to set what your default permissions will be on new files? umode umask mode mask
umaskv
The _____ command displays information about the Linux kernel: kern uname real linux
uname
Which command will remove consecutive duplicate lines from a file? unique uniq dup dedup
uniq
If you want to delete a variable, you can run: wipe clear delete unset
unset
To see how long the system has been running, you can use the _____ command. free nice uptime ps
uptime
