added basic UNIX/LINUX commands

master
Alessandro Mauri 6 years ago
parent b0dd7fb08f
commit e73b626b0a
  1. 35
      linux_general.txt

@ -34,11 +34,30 @@
-"acpi" is kinda important in laptops "acpi -i" for info, also "thinkpad_acpi" should be noted
-GREP basics:
G-REP or "grep" can be used to filter command results:
"ps ax | grep whatyouwant" and it will output the line containing "whatyouwant"
example "dmesg | grep whatyouwant"
NOTE: "|" is used to pipe the output in another program
-Basic commands:
GREP:
G-REP or "grep" can be used to filter command results:
"ps ax | grep whatyouwant" and it will output the line containing "whatyouwant"
example "dmesg | grep whatyouwant"
NOTE: "|" is used to pipe the output in another program
PS:
Ps is a UNIX tool used to get information about the current status of the system
The most basic and or useful usage is to view all the running processes and the corresponding
UUIDs (like if you want to kill process and you need its UUID), that is done by appending "ax"
to ps: "ps ax"
KILL:
It kill the specified process given its UUID, syntax "kill <UUID>"
"|" and ">":
These are both "pipe" functions, they can pipe the output of a script or program into
something (via std i/o), but they are used differently in the sense that "|" is specifically
used to pipe the output into another program EX: "ps ax | grep gnome-shell", this outputs the UUIDs
of all the gnome-shell instances since the output of "ps ax" is piped into GREP which in turn
returns just the results of the query.
On the other hand ">" is used to pipe the output into a file EX: "ls -la > ls.txt", this puts
the output of ls into ls.txt which we can then read.
"whoami" and "groups":
they respectively output the current user and groups
NOTE: one alternative to "whoami" is "echo $USER" which can be used in scripts
-Linux afterinstall (how to get thing working):
Bluetooth usage:
@ -74,8 +93,6 @@
With pacman:
"pacman -Qqe"
-You use "ps ax" to view all processes and their UIDs
-"https://wiki.archlinux.org/index.php/systemd" just helpful
-To run .jar files in cli you must use "java -jar"
@ -143,10 +160,6 @@
To change the actions to take when power button or lid switch events occur:
modify the conf. file at /etc/systemd/logind.conf or /etc/systemd/logind.conf.d/*.conf
-Who are you? "whoami"
-Where am I? "groups"
-Adding executables not located in /bin/ (downloaded from internet):
Refers to:
https://askubuntu.com/questions/322772/how-do-i-add-an-executable-to-my-search-path