49 Questions
Which command is used to start a new tmux session?
$ tmux new-session
What is the purpose of using sed in the UNIX environment?
To automate edits
What does the command 'sed -i 's/old/new/g' *.txt' do?
Replaces the word 'old' with 'new' in all files with the extension '.txt'
Which command is used to list files that don't match filea, fileb, or filec?
a-c
What is the purpose of using quotes in shell scripting?
To access variable values inside the quotes
Which command is used to substitute a pattern with a replacement in a file using sed?
a) s
Which command is used to delete lines containing a specific pattern in a file using sed?
b) d
Which command is used to obtain command arguments from another command's output?
expr
Which command is used to append text after lines containing a specific pattern in a file using sed?
c) a
What is the purpose of the '$$' special variable in shell scripting?
To get the shell process ID
Which command is used to insert text before lines containing a specific pattern in a file using sed?
d) i
Which command is used to terminate a process with a specified pid?
kill -9 pid
What does the SIGHUP signal indicate?
The disconnection of a user's terminal
What does the 'disown' command do?
Detaches a process from the current terminal
What is the default behavior for the SIGHUP signal?
Stop executing processes
Which command is used to create a new window in tmux?
$ tmux new-window
What is the purpose of the 'sed' command in the UNIX environment?
All of the above
What is the purpose of the 'tmux-resurrect' plugin?
To save and restore tmux sessions
Which command is used to assign input to variables in shell scripting?
read
What is the purpose of the 'expr' command in shell scripting?
To evaluate arithmetic expressions
What is the purpose of the 'bg' command in UNIX?
To resume a suspended job and run it in the background
What is the purpose of the 'time' command in UNIX?
To measure the execution time of a command
Which command is used to run a command in the background in a shell script?
jobs
What is the purpose of the 'nice' command in Unix-like OS?
To control the priority of a process
What is the default niceness value in Unix-like OS?
0
What is the effect of having a higher niceness value on a process's CPU time?
The process will receive less CPU time
Which command is used to delete empty lines in a file using sed?
sed '/^$/d' file.txt
What does the command 'grep '^apple' file.txt' do?
Prints lines that start with 'apple' in the file.txt
What does the command 'awk '{print $2}' file.txt' do?
Prints the second column of a space-separated file
What is the purpose of using the '-n' option with sed?
Suppresses auto-display of pattern space
Which command is used to start a new tmux session?
$ tmux new-session
Which command is used to terminate a tmux session with a specified session name?
$ tmux kill-session -t
Which command is used to create a new window in tmux?
$ tmux new-window
Which command is used to assign input to variables in shell scripting?
read
What is the purpose of using quotes in shell scripting?
To enclose strings that contain special characters
What does the command 'grep' do in the UNIX environment?
Searches for a pattern in a file
What is the purpose of the 'bg' command in UNIX?
Resumes a suspended job and runs it in the background
Which command is used to delete lines containing a specific pattern in a file using sed?
sed '/pattern/d' file.txt
Which command is used to append text after lines containing a specific pattern in a file using sed?
sed '/pattern/a\ ext' file.txt
What is the purpose of using quotes in shell scripting?
To group multiple commands together
What does the command 'grep '^apple' file.txt' do?
Matches lines that start with 'apple'
Which command is used to run a command in the background in a shell script?
jobs
What is the purpose of the 'nice' command in Unix-like OS?
To control the priority of a process
What does the SIGHUP signal indicate?
The disconnection of a user's terminal
What is the effect of having a higher niceness value on a process's CPU time?
The process receives less CPU time
Which command is used to change the priority of a running process in Linux?
renice
What is the range of niceness values in UNIX for representing process priority?
-20 to 19
What is the default behavior of the SIGHUP signal in UNIX?
Stops executing processes
What is the purpose of the 'disown' command in UNIX?
Detach a process from the current terminal
Test your knowledge of Linux command line file manipulation with this quiz! Learn about using the 'ls' command to list files, exceptions to matching patterns, character classes, reversing matching, and using multiple patterns.
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