Files
/etc/group
root:x:0: bin:x:1: daemon:x:2: users:x:100:robkalmeijer robkalmeijer:x:1000:robkalmeijer
Note: the password field is not used most of the time, it is reserved to create privileged groups on your system.
/etc/gshadow
root::: bin::: daemon::: nobody::: users:::robkalmeijer robkalmeijer:!!::robkalmeijer