Linux CLI Cheat Sheets
- Details
- Written by steve
- Category: Linux Cheat Sheets
For those new or even those advanced users, sometimes we need a little kick start to remember the commands for Linux. This is meant as a starter page for you:
Remember, Links / Files are for Linux only.
Abstract
Fundamental Linux/Unix commands for the Linux/Unix command line learner. If you are experienced with Linux/Unix: you have probably mastered these commands. If not: you are in the right place.
Note: Some of the examples below presume files and paths that might not match your particular system and tool installation.
Where to Acquire
These tools are installed natively in most Unix/Linux distributions, as well as OS X.
Examples/Use Case
bash-basics
Tab-completion:
Folks who are new to the Unix/Linux command line often attempt to type everything by hand. This may work well if you type quickly and accurately. Most of us are much better off using tab completion.
Note that Windows PowerShell also supports tab completion, but it handles ambiguity differently. See the PowerShell cheat sheet for more information.
Type the following, and then press the
<TAB> key:
$ cat /etc/pas
Then press
<TAB>.
Note that it autocompletes to
/etc/passwd.
Now try tabbing with ambiguity:
$ cd ~/Do
Then press
<TAB><TAB>.
Note that it offers two choices:
Documents/ Downloads/.
Now add a "w" and press
<TAB>:
$ cd ~/Dow
Press
<TAB>. It autocompletes to ~/Downloads/.
cat
Display a file:
$ cat example.txt
Concatenate (cat) FileA.txt and FileB.txt, create FileC.txt:
$ cat FileA.txt FileB.txt > FileC.txtcd
Change Directory (cd) to the /tmp directory:
$ cd /tmp
Change to the home directory. The following commands are equivalent for the "student" user: "~" means home directory (for example: /home/student):
$ cd
$ cd ~
$ cd /home/student
Change to the parent directory. For example: if you are in /tmp/subdirectory/, this will change your working directory to /tmp/:
$ cd ..echo
Print (echo) the string "Cylon":
$ echo Cylon
Create or overwrite the file example.txt, containing the string "Cylon":
$ echo Cylon > example.txt
Append the string "Cylon" to the file example.txt:
$ echo Cylon >> example.txtls
List the files in the current directory (equivalent to the cmd.exe "dir" command):
$ ls
List the files in the current directory, long output (-l), all files including "hidden" files that begin with a "." (-a):
$ ls -la
List the files in the current directory, long output (-l), all files (-a), sort by time (-t):
$ ls -lat
List the files in the current directory, long output (-l), all files (-a), reverse (-r) sort by time (-t):
$ ls -lartnetworking
Show network interface configuration:
$ ifconfig
Show network interface configuration using "ip":
$ ip a
Restart networking:
$ sudo /etc/init.d/networking restartpasswd
Change your password:
$ passwdping
ping a host forever (until CTRL-C is pressed), see if it is up (and unfiltered):
$ ping 10.5.11.25
ping a host 3 times, see if it is up (and unfiltered):
$ ping -c3 10.5.11.25pwd
Print Working Directory (pwd), show the current directory:
$ pwdsudo
Run a command as root:
$ sudo command
Open a root bash shell:
$ sudo bashAdditional Info
A printable PDF version of this cheat sheet is available here:
Original Version Location Link LinuxCLI101
Original Version Location Link LinuxCLI101
Local Version Link: LinuxCLI101-v1
Cheat Sheet Version
Version 1.0
This document was shared from the original location.
See Original Version Location Link above.
