NDG Linux Almost all Chapters 2022 (No chapter 1 sorry)

Which of the following commands will execute the last command that started with ec:

!ec

Which two characters represent the empty string?

"" (quotation marks)

Which of the following is not used for globbing?

# (hashtag)

To navigate to the end of the line in vi command mode, you can press:

$ (dollar sign)

If you want to overwrite a file by redirecting the output of a command, you can use:

>

If you want to append content to a file with the normal output of a command, you can use:

>>

Which glob character matches zero or more characters?

* (asterik)

Which regular expression character matches zero or more of the previous character?

* (asterik)

Which of the following files is specific to each user and executed every time a bash shell is opened?

* ~/.bashrc

Which of the following regular expression characters is an extended regular expression character?

+ (plus sign)

Long command options are preceded by which two characters?

-- (double dash)

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?

-- (double dash)

Which option of the head command will display only the first six lines of a file?(choose two)

-6 -n 6

Which option to the find command will execute a command on each matching file without prompting the user?

-exec

If you want to use grep without regard to the capitalization of text, you can use the option:

-i

Which option to the locate command will have the command perform case-insensitive searches?

-i

Which option to the find command will search by name using a case-insensitive match?

-iname

To get the grep command to show the names of files that matched instead of the content that matched, you can use the option:

-l

Which option to the find command will display a long listing of matching files?

-ls

Which option to the find command will prompt the user to execute a command on each matching file?

-ok

To copy the contents of a directory, use the following option(s) for the cp command:(choose two)

-r -R

Which option to the ls command will sort the output by time-stamp?

-t

Which option to the find command will search by user owner?

-user

The names of hidden files begin with the ___ character.

. (period)

Which regular expression character matches any one character?

. (period)

An absolute path always starts with which character?

/ (forward slash)

To search for something while viewing a man page, you first type a __ character.

/ (forward slash)

To search forward from your cursor in your vi document in command mode, you can type __ followed by the pattern to search for.

/ (forward slash)

Which directory is used to store files representing attached devices?

/dev

Which directory is used to store configuration files specific to the host?

/etc

To redirect the errors that are output by a command, you can use:

2>

To send the normal and error output of a command to a single file, you can use:

2>&1

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:

:q!

To search backward from your cursor in your vi document in command mode, you can type __ followed by the pattern to search for.

?

The path testdir/file.txt is:

A relative path

Assuming at least one file matching the pattern is in the current directory, the command echo ???a will display:

All of the files in the current directory that have four characters in the file name with the last character being an "a" character.

Chapter 10

Chapter 10

Chapter 2

Chapter 2

Chapter 3

Chapter 3

Chapter 4

Chapter 4

Chapter 5

Chapter 5

Chapter 6

Chapter 6

Chapter 7

Chapter 7

Chapter 8

Chapter 8

Chapter 9

Chapter 9

The /usr/local/bin directory contains:

Commands that have been compiled from local sources

The mkdir command cannot be used to:

Delete a directory

What would typing 4dh do in vi command mode?

Delete the previous four characters

The head -n -1 readme.txt command will:

Display all but the last line of readme.txt

The command man 5 passwd will:

Display the man page in Section 5 for passwd.

In a command pipeline, the output of one command is sent to another command as output.

False

The ls command can list the contents of only one directory at a time.

False

The ls-l command output will not include:

File contents

If you are in the vi command mode and want to add a new line before your cursor, you would type:

O

Environment variables are:

Passed into other shells and commands

What does the vertical bar | character do in a regular expression?

Separates alternative patterns that can be matches

To process a script file in the current context, you execute:(choose two)

Source . (period)

The PATH environment variable is used for:

Specifying directories to search for executable files

Which of the following are glob characters?(choose three)

The asterisk * character The question mark ? character The square brackets [] notation

By default, using the touch command on an existing file will update the file's _____.

Timestamp

A pair of single quotes ' will prevent the shell from interpreting any special character.

True

You can combine glob characters in a single pattern, for example: a??*[0-9].

True

The FHS sets which standard?

Which directories should be used to hold specific files

What is the reason you would use the grep command with a quiet -q option?

You do not want to write anything to standard output

Which two characters match a single character from a set of specified characters?

[] (brackets)

To go to the beginning of a line in the vi command mode, you press:

^ (carrot)

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)

^ (carrot) ! (exclamation point)

The regular expression a? is equivalent to:

a{0,1}

The regular expression a* is equivalent to:

a{0,}

If you want to see the entire contents of a text file, you can use the _____ command:

cat

If you want to extract fields from a file, you can use:

cut

Which character at the beginning of a long listing indicates a directory?

d

Which command will send text to the terminal display:

echo

Which of these commands would return the files /etc/game.conf, /etc/file.conf and /etc/snap.conf(choose two)

echo /etc/????.*f ls /etc/????.????

Which of the following commands will take the standard error of the echo command cmd1 and put it into the /tmp/output.txt file:

echo 2> /tmp/output.txt

Which of the following will match files that have the string hello somewhere in the file name?

echo hello

To use extended regular expressions, you can use:(choose two)

egrep grep -E

The _____ command will search for files by searching the filesystem in real-time.

find

To see a list of commands that are available while viewing a man page, you can type the __ character.

h

If you are in the vi command mode and want to begin inserting text before your cursor, you can type:

i

Select the function that the tr command cannot perform:

insert characters

If you want to move up a line in vi command mode, you can press the Up Arrow Key ↑ or:

k

Which of the following commands can be used to scroll through a text file?

less

To perform a long listing to show file details, use which of the following commands:

ls -l

Which of the following are valid command lines?

ls /etc -l ls -l /etc

Which command can be used to send the output of a command to both stdout and a file:

ls | tee /tmp/output.txt

If you are in vi command mode and want to add a new line after your cursor, you can type:

o

This command displays binary files in a variety of representations:

od

Which command will merge two files together line by line?

paste

The ______ command will display your current working directory.

pwd

To display your current location within the filesystem, you can type:

pwd

Environment variables cannot be created by which command?

set

If you want to break apart a large file into smaller files, you can use:

split

Many commands that read text files will also read from this stream:

stdin

This stream is the output of a command operating normally:

stdout

The file command uses _____ to determine file types.

the magic file

The _____ command will tell you if a command exists as a built-in command, function, alias or a command located within the PATH variable.

type

Which two symbols can effectively send stdin to a command?(choose two)

| ?

Which file can you place in your home directory to be executed when you log off the system?

~/.bash_logout