Midterm Study concepts. chap 1-14
which character at the beginning of a long listing indicates a regular file? A.- B.| C.c D.d
-
to copy the contents of a directory, use the following options for the cp command (choose two) A.-A B.-r C.-d D.-R
- r -R
Long command options are proceded by which two characters: A.&& B.-- C.|| D.88
--
which two characters do you use to tell the command that you are finished providing options and the remaining data on the command line is arguments? A.-- B.** C.|| D.&&
--
to maintain timestamps when using the cp command, use: A.-T B.-A C.-a D.-t
-a
use the ___ option to display hidden files with the ls command A.-A B.-h C.-D D.a
-a
which option for the rm command will cause it to prompt before deleting files> A.-l B.-p C.-i D.a
-i
you can pass arguments to long options by using which of the following techniques (choose two) A.- options {argument} B.- option ~ argument C.-option =argument D.-option argument
-option=arguemtn -option argument
which mkdir option should be used to create parent directories (that dont already exist) along with the specified directory? A.-F B.-d C.-A D.-p
-p
Which options for the rm command can be used to delete directories that contains files> choose two A.-r B.-R C.-A D.-D
-r -R
The __ option to the uname command will display the kernel name A.-s B.-x C.-k D.-,
-s
the names of hidden files begin with the ____ character A.* B.> C.+ D..
.
when speficying a path, the ___ character symbolized the current directory A.: B./ C.~ D..
.
To process a script file in the current context, you execute: (choose two) A.. B.include C.source D.exec
. source
local variable are: A.Are not a valid type of variable B.passed into other shells and commands C.Only available to the shell they are created in D.not used by shells at all
.Only available to the shell they are created in
an absolute path always start with which character? A./ B.~
/
to search for something while viewing a man page, you first type a __ character A.> B.| C.< D./
/
which of the following files is for all bash shell users and executed every time a bash shell is opened: A./etc/bashrc B./etc/profile C.~/.bashrc D.~/.bash_profile
/etc/bashrc
The location of users' default shells is stored in the __ file. A./etc/passwd B./etc/group C./etc/gshadow D./etc/shadow
/etc/passwd
which of the following files is for all bash shell users and executed only at login? A./etc/bashrc B./etc/profile C.~/.bashrc D.~/.bash_profile
/etc/profile
shell command man pages are typically located in section___. A.1 B.3 C.4 D.2
1
special file man pages are typically located in section ____ A.3 B.4 C.1 D.3
4
system administration man pages are typically located in section ___. A.8 B.6 C.7 D.9
8
in the PATH variable, the ___ character is used to separate the directories. A.: B.; C.~ D./
:
The Path environment variable is used for: A,specifying locations that are writable for the user B.Specifying directories to search for xecutable files C.Specifying directories to contain documentation D.specifying locations where ordinary users can navigate
B.Specifying directories to search for xecutable files
the two login types are: A.URI and CLU B.CLI and GUI C.URI and Cli D.GUX and Cli
CLI and GUI
the head -n-1 readme.txt.command will: A>show the first character of every line of readme.txt B.Display all but the last line of readme.txt C.Number the lists of readmen.txt D.Dsplay the first line of readme.txt
Display all but the last line of readme.txt
shell variables are used to: A.reboot the system B.prevent users from logging in C.hide passwords D.Hold critical system information
Hold critical system information
which character(s) cannot be placed in variable names? A>Upper~case alpha characters B.Hyphen ("-") character C.Underscore ("_") character D.lower-case alpha character E.numeric character
Hyphen ("-") character
The ____ variable stores diretories that the shell used to find executable files A.CD B.DIR C.PATHS D.PATH
PATH
which of the fillowing is a valid way to add the /data directory to the existing PATH variable? A.$PATH=$PATH:/data B.PATH=$PATH:/data C.$PATH=/data D.PATH=/data
PATH=$PATH:/data
the "." in an ls listing represents: A.directories that cant be accessed B.Hidden files C.The end of the command output D.the current directory
The current directory
which if the following will create a variable: A.VAR+value B.VAR=value C.VAR value D.Var~value
VAR =value
the path testdir/file.txt is: A.an invalid path B.a relative path C. a circular path D.an absolute path
a relative path
bash is: A.a website B.a networking term C.a shell D.an operating system
a shell
the path /data/file.txt is: A.an invalid path B.a relative path C. a circular path D.an absolute path
an absolute path
A command can be: (choose three) A.an alias B.a block C.a configuration file D.a variable E.a function F.a program built-in to the shell
an alias a function a program built-in to the shell
if you want to see the entire contents of a text file, you can use the __ command: A.dog B.type C.wc D.cat
cat
The basic form of a command line is: A.command [options...][arguments...] B.command [arguments...]options C.command arguments options D.command [options..]arguments...
command [options..][arguments...]
the /usr/local/bin directory contains: A. the most fundamental commands that are essential for th eoperating system to function B.nothingL it is not a valid directory C.commands that have been compiled from local sources D.essential administrative command
commands that have been compiled from local sources
using the touch command and specifying an nonexistent file.. A.prompt the user to create file B.creates a blank file with that name C.generates an error. D.does nothing
creates a blank file with that name
if you want to extract fields from a file, you can use: A.cols B.extract C.fields D.cut
cut
which character at the beginning of a long listing indicates a directory> A.- B.| C.c D.d
d
the mkdir command cannot be used to A.delete a directory B.create new directories C.create multiple directories at once D.create sub-directories in different parent directories
delete a directory
The command man 5 passwd wil: A.Display the man page of section 5 for passwd. B.print the first five pages that refer to the term passwd. C. not work; you can't give anumeric argument to the man command D.Display the first five lines of the man page for the passwd command.
display the man page of section 5 for passwd
Which Command will send text to the terminal display: A.echo B.type C.print D.show
echo
the /bin directory contains: A.commands that have been compiled from local sources B.nothing: it is not a valid directory C.the most fundamental commands that are essential D.essential administrative commands
essential administrative commands
The ___ command will take another command for the argument to execute: A.exit B.uname C.exec D.pwd
exec
to replace the currently running shell, you can use: A.dash B.bash C.exec D.csh
exec
environment variable can be viewed by running:(choose two) A.export -e B.vars C.export -p D.env
export -p env
The rmdir command can be used to delete directories and their contents, true or false
fALSE
the command manual ls will provide detailed information about how the ls command funtions true or false>
false
the ls command can list the content of only one directory at at time. true or false
false
two tables have columns with the same field names. what is required in order to join the two tables? A.change fields names in one of the tables to make it unambiguous B.Join between such tables cannot be created C.create a dummy table which has no common fields D.fields 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 included A.file permissions B.timestamp C.hard link count D.file contents
file contents
if you want to set the maximum line width for a text file, you can use: A.od B.fmt C.pager D.format
fmt
to see a list of commands that are available while viewing a man page, you can type the __ character A.w B.h C.g D.c
h
The ____ command will allow you to see commands that you have previously executed A.hist B.previous C.history D.last
history
select the function that the tr command cannot perform: A.Translate from one set of characters to another B.delete specific characters C.Eliminate duplicate characters D.insert characters
insert characters
Which command merges two files related tables in a database? A.paste B.join C.sql D.query
join
the core software component that tells the hardware what actions to take is called the ____ A.compiler B.kernel C.transmitter
kernel
you want to execute the ls command with two options: -r and -l which of the following are valid ways to run this command: A.rl ls B.ls -r -l C.ls -l-r D.ls --r --l E.ls rl F.ls -rl
ls -r-l ls-l-r
which of the following are valid command lines? (choose two) A. ls/etc -l B. ls-l/etc C.ls-/etc D.-l ls/etc
ls /etc-l ls -l /etc
to perfomr a "long listing" to show file detailes, use which of the following comands> A.ls -D B.ls -L C.|| D.ls-l
ls-l
which command is used in order to view the manual page for a topic? A.show B.man C.help D.doc
man
if you want a file to be displayed with its lines numbered, you can use: A.nl B.cut C.fmt D.number
nl
this command displays binary files in a variety of representations: A.od B.format C.cut D.cat
od
the [ ] characters around day in the example cal [-smjy13][[[day]month]year] means that day is: A. an argument that must be "day" and nothing else B. an option, not an argument C.required D.Optional
optional
Environment variable are A.Are not a valid type of variable B.passed into other shells and commands C.Only available to the shell they are created in D.not used by shells at all
passed into other shells and commands
Which command will merge two files together line by line? A.combo B.paste C.join D.merge
paste
the __ comand provides many options for formatting a file for printing: A.pr B.format C.print D.header
pr
The ____ command will display your current working directory A.uname B.exec C.pwd D.exit
pwd
To display your current location within the filesystem, you can type: A.whereami B.cwd C.dir D.pwd
pwd
which of the following is a non-interactive editor? A.ed B.vi C.nano D.sed
sed
environmental variables cannot be declared by which command> A.typeset B.declare C.export D.set
set
to view all current variables, you can use; A.dump B.var C.view D.set
set
To put the lines of a file in alphabetical order, you can run: A.unique B.sort C.cat D.paste
sort
the expand and unexpand commands change: (choose two) A.new lines B.carriage returns C.spaces D.tabs
spaces tabs
if you want to break apart a large file into a smaller files, you can use: A.split B.at C.break D.dump
split
which of the following man page sections will provide an example of how a command is executed? A.the SYNOPSIS section B.the DESCRIPTION section C.the FILES sections D.the NAME sections
the SYNOPSIS section
when typing a command, you can have the bash shell complete the command by pressing which key? A.the Up Arrow key B.the Del key C.the Backspace key D.The Tab key E.The Enter key
the Tab key
the PATH variable will be used under which situation? A.the command is an alias B.the command is not found C. a full path name to a command is provided D.the command is a function
the command is not found
by default, what does the cp command preserve from the orginial file A.the timestamps B.the name C.the permissions and ownership D.the contents
the contents
the ls command will list which of the following by default? A.the root directory B.the current directory C.nothing; it requires an argument D. users home directory
the current directory
the syntax [-u|-utc|-universal\ means: A.these three options are different B. these three options mean the same thing C.these are required options D.this is invalid syntax
these three options mean the same thing
Why would you press CTRL+C when executing tail? A.to capture the output into a file B.to complete the processing of a file C. to stop tail from following a file D. to get tail to copy the text it is outputting
to stop tail from following a file
The mv command will rename a file when a new directory is not specified. true or false>
true
Users home directories often containt hidden files true or false
true
the mv command can be used to move more than one file at a time. true or false
true
the rm command can be used with glob characters to delete multiple files. true or 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 fase>
true
The ___ command will tell you f a command exists as a built-in command, function, alias or a command located within the PATH variable. A.set B.export C.declare D.type
type
The__command displays information about the linux kernel: A.kern B.uname C.real D.linux
uname
Which command will remove consecutive duplicate lines from a file? A.unique B.uniq C.dup D.dedup
uniq
if you want to delete a variable you can run: A.Wipe B.clear C.delete D.unset
unset
which character at the beginning of a long listing indicates a symbolic> A.- B.| C.c D.d
|
which file can you place in your home directory to be executed when you log off the system? A./etc/bashrc B.~/.bash_logout C.~/.bashrc D.~/.bash_profile
~/.bash_logout
which of the following files is a specific to each user and executed only during login? A.~/.bash_profile B./etc/profile C./etc/bashrc D.~/.bashrc
~/.bash_profile
which of the following files is specific to each user and executed every time a bash shell is opened? A.~/.bashrc B.~/.bash_profile C./etc/bashrc D./etc/profile
~/.bashrc
which of the following commands will execute the last command that started with ec: A.!! B.!!ec C.!ec D.!-ex
!ec
