Useful commands

Published: 2023-10-19
Updated: 2024-05-09

Find which package contains a particular file 🔗

apt-file

Consume CPU resources 🔗

cat /dev/zero > /dev/null

Check which shells are available 🔗

cat /etc/shells

Show largest folder/files 🔗

du -a -BM . | sort -n -r | head -n 30

Set environment variables in bash 🔗

export VAR=abc

Check what type of file something probably is 🔗

file

Search for a file/folder 🔗

find -name "PATTERN"

Show command history 🔗

history

Show IP Addresses 🔗

ip -c a

Show default gateway and routes 🔗

Source: https://www.rootusers.com/how-to-display-routing-table-in-linux/

ip -c r

See installed kernels 🔗

find /boot/vmli*

Consumes RAM (And CPU) 🔗

memtester

Show network devices 🔗

nmcli device status

Check which shell is in use 🔗

ps -p $$

Get SHA1 hash of a file 🔗

sha1sum

Get SHA256 hash of a file 🔗

sha256sum

Start Discord Minimized 🔗

snap run discord --start-minimized

Get file “properties” 🔗

stat

Check system to see which sensors are available 🔗

sudo sensors-detect

See bluetooth logs 🔗

sudo systemctl status bluetooth

Get a checksum for a file 🔗

Source: https://www.baeldung.com/linux/sha-256-from-command-line

The source also shows how to verify against the checksum file

sha256sum my_file.txt

sum my_file.txt

Get checksum for a string 🔗

echo string | sha256sum

Manage TexLive Packages 🔗

Was already installed on my system not sure from where or when

tlmgr

Move files to trash from command line 🔗

trash

Check version of linux in use 🔗

uname -a

See power status for connected devices 🔗

upower --dump

Watch the sensor stream 🔗

watch sensors