unixgroup

Group membership checking tool, inspired by Jan Wolter's pwauth/unixgroup tools

Usage

$ groups michael
michael users

Set the USER env variable to the user to be checked, and GROUP to a comma-separated list of groups to check against

$ export USER="michael"
$ export GROUP="testgroup,users,wheel"

Check the group membership

$ unixgroup
$ echo $?
0

Since the michael user account is in the "users" group it returns status 0

Exit Statuses

• 0: User exists, and is a member of one of the specified groups
• 1: User exists, but is not a member of any of the groups
• 2: User does not exist (or primary group id is not numeric, e.g. Windows SID)
• 3: USER environment variable is invalid
• 4: GROUP environment variable is invalid