Useful Commands: Difference between revisions
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Still won't close? Hard Kill, data may be lost that wasn't saved to disk yet. | Still won't close? Hard Kill, data may be lost that wasn't saved to disk yet. | ||
kill -9 7243 | kill -9 7243 | ||
If all processes have the same name you can use "killall" | |||
killall firefox-bin | |||
== How Much Space Is in Use? == | == How Much Space Is in Use? == | ||
Revision as of 21:56, 21 June 2026
Kill program from command line
Show all processes
ps aufx
Or search for a specific process name
ps aufx | grep firefox
Example output
user 7243 27.4 2.1 17807108 1413692 ? Ssl 21:32 18:31 | \_ /home/user/Desktop/firefox/firefox-bin
The second column is the process ID.
Some applications, pretty much any that use flatpak and any browser, will have multiple processes in a "tree" (see below), in these cases you may need to kill every process in the tree ("kill 3136 3607 3634") for things to fix themselves.
user 3136 0.0 0.0 3432 2292 ? Ss 21:31 0:00 | \_ bwrap --args 84 -- easyeffects user 3607 0.0 0.0 3440 1728 ? S 21:31 0:00 | | \_ bwrap --args 84 -- easyeffects user 3634 9.0 0.3 1619592 249548 ? SLl 21:31 6:26 | | \_ easyeffects
Gentle process kill (try this first), the app will be asked to exit nicely.
kill 7243
Still won't close? Hard Kill, data may be lost that wasn't saved to disk yet.
kill -9 7243
If all processes have the same name you can use "killall"
killall firefox-bin
How Much Space Is in Use?
df -h
Example output
The Filesystem with your system root is always /, some systems will have a separate /home filesystem.
Filesystem Size Used Avail Use% Mounted on tmpfs 3.2G 5.8M 3.2G 1% /run efivarfs 128K 52K 72K 42% /sys/firmware/efi/efivars /dev/md3 458G 336G 99G 78% / tmpfs 16G 9.0M 16G 1% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock /dev/md2 2.0G 321M 1.6G 18% /boot /dev/nvme0n1p1 511M 344K 511M 1% /boot/efi tmpfs 3.2G 16K 3.2G 1% /run/user/0
Disk space usage is also available graphically from the "Storage Devices" section in KDE system settings.
Package Management
Update the system
pacman -Syuu
apt update && apt upgarde
dnf update
Update Flatpaks
flatpak update
Update snaps
snap refresh
Install a package
pacman -S name
apt install name
dnf install name
Remove a package
pacman -R name
apt remove name
dnf remove name
Rebuild GRUB Config
grub-mkconfig -o /boot/grub/grub.cfg