update-passwd --version (return code: 0)
update-passwd 3.5.39
update-passwd --help (return code: 0)
Usage: update-passwd [OPTION]...
-p, --passwd-master=file Use file as the master account list
-g, --group-master=file Use file as the master group list
-P, --passwd=file Use file as the system passwd file
-S, --shadow=file Use file as the system shadow file
-G, --group=file Use file as the system group file
-s, --sanity-check Only perform sanity-checks
-v, --verbose Show details about what we are doing (recommended)
-n, --dry-run Just say what we would do but do nothing
-L, --no-locking Don't try to lock files
-h, --help Display this information and exit
-V, --version Show version number and exit
File locations used:
master passwd: /usr/share/base-passwd/passwd.master
master group : /usr/share/base-passwd/group.master
system passwd: /etc/passwd
system shadow: /etc/shadow
system group : /etc/group
Report bugs to the Debian bug tracking system, package "base-passwd".