Most Important Linux Commands Cheatsheet(github.com)
github.com
Most Important Linux Commands Cheatsheet
https://github.com/r0f1/linuxhelp
12 comments
Thank goodness for Linux. Where would UNIX and BSD be without the most important Linux commands? I kid. No Linux commands listed, only shell commands. I'd like to initiate a cutesy repeatable Ghostbuster's themed meme: There is no Linux. There is only shell. Maybe if it is popular enough, the zealots will stop insisting GNU/Linux is the center of the cosmos, but I doubt it.
Everything you said is true but for absolute noobs who want to get started with Linux, this is useful
As a start to using shell I recommend learning (roughly in order):
man
grep
sed
find
piping and redirect
xargs
looping
Knowing the basics of those unlocks a lot of the power of the shell. You can you them to brute force your way through most problems as you learn more.
man
grep
sed
find
piping and redirect
xargs
looping
Knowing the basics of those unlocks a lot of the power of the shell. You can you them to brute force your way through most problems as you learn more.
Seconded - especially the section on xargs & looping.
I would tweak the redirect info to have “xxx &> file” in there since that’s one that is often confusing to people early on that want to output stdout and stderr to a file and are confused about how to do that. But yea the list of stuff here is a nice starter list for sure.
Thanks, good idea. I will add that one.
I know that people like to use ctrl-R to search backwards through history, but I am very zealous about using the up-arrow to search through your history instead (in your .bashrc):
bindkey "^[[a" history-beginning-search-backward
bindkey "^[[B" history-beginning-search-forward
bindkey "^[[a" history-beginning-search-backward
bindkey "^[[B" history-beginning-search-forward
Pedantic note about ctrl+d: it doesn’t mean logout. It sends and EOF character.
Said EOF is honoured by your TTY, which closes the FD this ending the session.
You can see this by typing `cat -` and ending it with ctrl+d. The windows equivalent is ctrl+z.
Said EOF is honoured by your TTY, which closes the FD this ending the session.
You can see this by typing `cat -` and ending it with ctrl+d. The windows equivalent is ctrl+z.
Pedantic-er note: ^D isn’t necessarily the VEOF character — you can change it with tcsetattr() after modifying termiosp->c_cc[VINTR] or by using stty(1). And it doesn’t send an “EOF character” (EOF is a condition/convention more than a character). All it does is make read(2) return immediately with whatever data is currently in the line buffer. You can try it now:
If there’s nothing in the line-buffer (because you pressed VEOF at the start of the line) then read(2) returns 0, which is interpreted as an end-of-file condition by your libc in fread() and friends.
You can checkout OpenBSD’s termios(4) for a more detailed explanation :)
$ cat
something^Dsomething^D
$ cat
If there’s nothing in the line-buffer (because you pressed VEOF at the start of the line) then read(2) returns 0, which is interpreted as an end-of-file condition by your libc in fread() and friends.
You can checkout OpenBSD’s termios(4) for a more detailed explanation :)
The content is useful, and familiar to any experienced Unix/Linux user,
but formatting that content as a table with many heavily folded lines
nearly ruins the content for any really new user.
OMG thank you for putting this together, OP.
I work with clients for whom this knowledge will be greatly useful. CTRL-R is a revelation, every time.
I work with clients for whom this knowledge will be greatly useful. CTRL-R is a revelation, every time.
If you need something like dd, or any of the "real programming" stuff like if statements and xargs, you probably really love it all and will find it yourself. If you just do a few things in shell and use Python and GUI for the rest, these Are the main ones.
Slightly less common ones I'd add:
kill and killall
ps -aux | grep APPNAME
(Technically not a single command, but it's 90% of my use of ps or grep, so it might as well be it's own command)
cowsay, fortune, neofetch, and lolcat, sl
Not actually included in shell but people should know about them anyway.
It's said that Arch users are legally required to stare at the output of neofetch once per hour at minimum.
Various systemctl commands:
start, stop, status, enable, disable, mask
systemd-analyze critical-chain
nmtui (Not sure which distros include this by default and which don't)
dmesg
journalctl, dmesg
sudo reboot now
sudo shutdown now
units (Usually not included, gotta install it)
ping, ip a
Also, this would be fantastic to include in educational material or even add directly to a distro. Does it have a license?