System Operations

Disable app armor

Note: Applications like Docker Desktop would not start if app armor is enabled

echo 'kernel.apparmor_restrict_unprivileged_userns = 0' |
  sudo tee /etc/sysctl.d/20-apparmor-donotrestrict.conf
kernel.apparmor_restrict_unprivileged_userns = 0

Font installation

Convenient script. I know I wrote Fedora but actually works for Debian-based as well, lol. Source: Trust me bro.

curl -O https://gist.githubusercontent.com/aaanh/2477c68314a144ee76de6858a57bed36/raw/fcd6a2dbbdc034f5f22c99c8085a1d6e575d293d/install-fonts-fedora.sh

System Information

ls*

• lspci
• lscpu
• lsblk

neofetch

Resource Monitoring

top or htop

For continuously querying resource usage. Simply open a terminal and run top.

htop has pretty formatting, not installed by default. Can be installed through common package managers.

Logs

journalctl

For systemd-based Linux operating system and/or distributions.

dmesg

Kernel-level logs.

/var/log/messages

This is where system log messages are stored in plain text.