ArchLinux Cheat Sheet

ArchCheatSheet.md

ArchLinux Cheat Sheet

Network configuration

• List network devices

    # ip link
  

• Enabling and disabling network interfaces

    # ip link set <network interface> up
    # ip link set <network interface> down
  

• To check the result:

    # ip link show dev <network interface>
  

• Start the DHCP service :

    # systemctl start dhcpcd@<network interface>.service
  

• Enable DHCP service to be started on bootup:

    # systemctl enable dhcpcd@<network interface>.service
  

• Install and start Network File System (NFS) :

    # pacman -S nfs-utils
    # systemctl start nfs-server.service
    # systemctl enable nfs-server.service
  

Manage packages with pacman

• Install a new package

    # pacman -S <package name>
  

• Update all package

    # pacman -Syu
  

• Remove all the cached packages that are not currently installed

    # pacman -Sc
  

• Recursively removing orphans packages and their configuration files

    # pacman -Rns $(pacman -Qtdq)
  

System and service manager : systemd

Arch Linux uses systemd as the init process.

• List running units

    # systemctl
  

• Start a unit immediately

    # systemctl start <unit>
  

• Stop a unit immediately

    # systemctl stop <unit>
  

• Restart a unit

    # systemctl restart <unit>
  

• Reload configuration

    # systemctl reload <unit>
  

• Show the status of a unit

    $ systemctl status <unit>
  

• Check whether a unit is already enabled or not

    $ systemctl is-enabled <unit>
  

• Enable a unit to be started on bootup

    # systemctl enable <unit>
  

• Disable a unit to not start during bootup

    # systemctl disable <unit>
  

• Check if any systemd services have entered in a failed state

    # systemctl --failed
  

Miscellaneous

• Kernel warning : "intel_rapl : no valid rapl domains found in package 0"

  Create and edit /etc/modprobe.d/blacklist.conf file with :

    blacklist intel_rapl
  

• Add an user

    # useradd -m -G users -s /bin/bash <username>
  

• Kernel warning : "ACPI : No IRQ available for PCI Interrupt Link [LNKS]. Try pci=noa"

  • Open /boot/grub/grub.cfg

  • In the Arch Linux entry menu, find the line beginning with linux

  • At the end of this line add

    	acpi=noirq
    

  • Example :

    	linux   /vmlinuz-linux root=UUID=a590453b-f844-4cf5-a74f-66a945eb2434 rw  quiet acpi=noirq
    

  To test this change before on a temporary grub.cfg modification, type e on menu entry in the boot loader to enter in edit mode.

• Show boot log

    journalctl -b
  

• Enable SSH service to be started on bootup:

    systemctl enable sshd.service
  

General recommendations

System maintenance

pacman -S samba gvfs gvfs-smb sshfs