Ben Chuanlong Du's Blog

It is never too late to learn.

Manage systemd Services and Units

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

  1. List all services names.

    service --status-all

  2. List all systemd units.

    systemctl

  3. Disable a service.

    systemctl disable service_name

  4. Check whether systemd is running as PID 1.

    ps --no-headers -o comm 1

A …

Run System Command in Go

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Comments

  1. exec.Command takes a shell command and optional arguments passed to the shell command, e.g., exec.Command("ls", "-lha"). It does not work if you pass a shell command with arguments as a single string to exec.Command

Reduce GRUB Timeout

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

  1. Open the file /etc/default/grub with sudo permission.

    sudo vim /etc/default/grub

  2. Update the value assigned to GRUB_TIMEOUT to a smaller one (e.g., 3). Notice that the time …