man cppw (Administration système) - copy with locking the given file to the password or group file
NAME
cppw, cpgr - copy with locking the given file to the password or group file
SYNOPSIS
cppw [-h] [-s] password_file
cpgr [-h] [-s] group_file
DESCRIPTION
cppw and cpgr will copy, with locking, the given file to /etc/passwd and /etc/group, respectively. With the -s flag, they will edit the shadow versions of those files, /etc/shadow and /etc/gshadow, respectively.
With the -h flag, the commands display a short help message and exit silently.
SEE ALSO
AUTHOR
cppw and cpgr were written by Stephen Frost, based on vipw and vigr written by Guy Maor.