TLDR
Enter a command. For example: ufw, ddrescue, fallocate, acpi.

update-alternatives

 
A convenient tool for maintaining symbolic links to determine default commands. More information: https://manned.org/update-alternatives.
 
  • Add a symbolic link:
     
    sudo update-alternatives --install {{path/to/symlink}} {{command_name}} {{path/to/command_binary}} {{priority}}
     
  • Configure a symbolic link for java:
     
    sudo update-alternatives --config {{java}}
     
  • Remove a symbolic link:
     
    sudo update-alternatives --remove {{java}} {{/opt/java/jdk1.8.0_102/bin/java}}
     
  • Display information about a specified command:
     
    update-alternatives --display {{java}}
     
  • Display all commands and their current selection:
     
    update-alternatives --get-selections

This is a tldr pages (source, CC BY 4.0) web wrapper for cheat-sheets.org. All commands, popular commands, most used linux commands. Referrals. Progressive Web Application (PWA) version to install on your device.