# set username and email (GLOBAL)
git config --global user.name 'thomas starzynski'
git config --global user.email 'thomas.starzynski@unibas.ch'

# check current username and email (GLOBAL)
# will return nothing when not set
git config --global user.name
git config --global user.email
git config --list       # list all configurations
git config -l           # --list = -l