#!/usr/bin/mawk -f
# Script to create a file suitable for use in the 'newusers' command,
# from a file consisting of user IDs and passwords in the form:
# first_name last_name password
# Copyright (c) KMSelf Sat Aug 25 20:47:38 PDT 2001
# Distributed under GNU GPL v 2, or at your option, any later version.
# This program is distributed WITHOUT ANY WARRANTY.

BEGIN {
    # Assign starting UID, GID
    if ( ARGC > 2 ) {
        startuid = ARGV[1]
        delete ARGV[1]
    }
    else {
        printf( "Usage:  newusers startUID file\n" \
          "  where:\n" \ 
          "    startUID is the starting userid to add, and\n" \
          "    file is an input file in form:\n" \
          "      first_name last_name password\n" \
        )
        exit
    }

    infile = ARGV[1]
    printf( "Starting UID: %s\n\n", startuid )
}

/^#/ { next }

{
    ++record
    first = $1
    last = $2
    passwd = $3
    user= substr( tolower( first ), 1, 1 ) tolower( last )
    uid = startuid + record - 1
    gid = uid
    printf( "%s:%s:%d:%d:%s %s,,/home/%s:/bin/bash\n",  \
        user, passwd, uid, gid, first, last, user \
        )
}