Ubuntu Server Version
Synonyms:
display the ubuntu version
lsb_release -a
other information
uname -a
cleanup /boot
https://askubuntu.com/questions/142926/cant-upgrade-due-to-low-disk-space-on-boot
dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge