User Related

Check if user exists

id bob

Package Manager

apt search --names-only tmux$
sudo apt edit-sources
dpkg -L tmux #list all files installed

Systemd

systemd-analyze

• Startup finished in 1.316s (kernel) + 574ms (initrd) + 9.519s (userspace) = 11.409s

systemctl cat sshd.service

sudo systemctl edit sshd.service --full

systemctl list-unit-files --state=enabled

sudo journalctl --unit sshd --since today

File System Related

To get metadata of a file

stat filename

Get Octal format permission of a file

stat -c "%a %n" filename

Enable mouse scroll

Edit ~/.tmux.conf add the below line

set -g terminal-overrides 'xterm*:smcup@:rmcup@'

If you have opened sessions for this to have effect run the below command in tmux

:source-file ~/.tmux.conf