Sometimes you need to know what the codename or release number is for your Ubuntu computer. Heres how to simply get them from the terminal.
# to get all release information
lsb_release -a
# No LSB modules are available.
# Distributor ID: Ubuntu
# Description: Ubuntu 14.04.4 LTS
# Release: 14.04
# Codename: trusty
# to get only the release number
lsb_release --release | cut -f2
# 14.04
# to get only the codename
lsb_release --codename | cut -f2
# trusty
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