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Linux Commands CheatSheet

This document is a cheat sheet for Linux commands, covering various categories such as file and directory management, copying, moving, deleting, viewing file contents, searching, counting, redirection, permissions, processes, disk usage, environment variables, software management, and shell scripting. Each command is accompanied by a brief description of its function. It serves as a quick reference guide for users to efficiently navigate and utilize Linux command-line operations.

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6 views3 pages

Linux Commands CheatSheet

This document is a cheat sheet for Linux commands, covering various categories such as file and directory management, copying, moving, deleting, viewing file contents, searching, counting, redirection, permissions, processes, disk usage, environment variables, software management, and shell scripting. Each command is accompanied by a brief description of its function. It serves as a quick reference guide for users to efficiently navigate and utilize Linux command-line operations.

Uploaded by

priyeshchaudhari35
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Linux Commands Cheat Sheet

File and Directory Management


`ls` → list files and directories
`ls -a` → list all files (including hidden ones)
`ls -l` → detailed file info
`mkdir ` → create directory
`cd ` → change directory
`cd` / `cd ~` → go to home directory
`cd ..` → move up one directory
`pwd` → print current directory path

Copying, Moving, Deleting


`cp file1 file2` → copy file1 to file2
`cp -R dir1 dir2` → copy directories recursively
`mv file1 dir/` → move file1 into dir
`mv file1 file2` → rename file1
`rm file` → delete file
`rmdir dir` → remove empty directory
`rm -r dir` → delete directory and contents

Viewing File Contents


`clear` → clear terminal
`cat file` → display file
`less file` → view file page by page
`head file` → first 10 lines
`tail file` → last 10 lines

Searching & Counting


`grep 'pattern' file` → search in file
`grep -i pattern file` → case-insensitive search
`grep -v pattern file` → exclude matches
`wc -l file` → count lines
`wc -w file` → count words
`wc -m file` → count characters

Redirection & Pipes


`command > file` → redirect output
`command >> file` → append output
`command 2> file` → redirect error
`command < file` → input from file
`cmd1 | cmd2` → pipe output

Help & Wildcards


`man command` → manual page
`whatis command` → short description
`apropos keyword` → search by keyword
`*` → match any characters
`?` → match one character

Permissions & Processes


`ls -l` → show permissions
`chmod [opts] file` → change permissions
`ps` → show processes
`command &` → run in background
`jobs` → list jobs
`fg %n` → foreground job
`bg %n` → background job
`kill %n` → kill job
`kill PID` → kill process by ID

Disk Usage & File Utilities


`quota` / `quotacheck` → check quota
`df -h` → disk usage
`du -sh *` → directory sizes
`gzip file` → compress file
`gunzip file.gz` → uncompress file
`file filename` → detect file type
`history` → show history
`find . -name 'pattern'` → find files
`locate file` → locate files
`wget URL` → download file

Variables & Environment


`echo $VAR` → show variable
`env` → list environment vars
`VAR=value` → set variable
`export VAR=value` → export var
`source ~/.bashrc` → reload config
`which command` → path to command

Compiling & Software Management


`./configure` → configure source
`make` → compile
`make check` → run tests
`make install` → install
`make clean` → cleanup
`tar -xvf file.tar` → extract tar file
`tar -zxvf file.tar.gz` → extract tar.gz
`strip file` → strip debug info
Shell Scripting
`#!/bin/bash` → script header
`chmod +x script.sh` → make executable
`./script.sh` → run script
`for ... do ... done` → loop
`if [ condition ]; then ... fi` → conditional

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