hostnamectl: command not found

Solution 1:

hostnamectl is provided by systemd-services package in Ubuntu 14.04. You need to install that package to get the command line utility

sudo apt-get install systemd-services

Solution 2:

To find out which package a file is you can use apt- file:

sudo apt-get install apt-file
apt-file update

After using it it is as simple as :

ricardo@zeus:~$ apt-file search hostnamectl
cdist: /usr/lib/python3/dist-packages/cdist/conf/type/__hostname/explorer/has_hostnamectl
systemd: /usr/bin/hostnamectl
systemd: /usr/share/bash-completion/completions/hostnamectl
systemd: /usr/share/man/man1/hostnamectl.1.gz
systemd: /usr/share/zsh/vendor-completions/_hostnamectl

Once apt -file package tells you that the file is found , you just have to install it:

sudo apt-get install systemd