newuser.sh

add users

#!/bin/bash

addgrp(){
	echo `date` : add new group >> $LOGFILE
	newgrps=`awk '{print $2}' $USRFILE | sed 's/,/\n/g' | sort | uniq`
	for f in $newgrps
	do
		`groupadd $f 2>> $LOGFILE `
	done
	return 0
}

addusr(){
	mkdir -p $3 2>>$LOGFILE
	useradd $1 -g $2 -d $3 -G $4 2>>$LOGFILE
	return $?
}
	
addpw(){
	echo `echo $2 | passwd $1 --stdin ` >> $LOGFILE
	return $?
}

USRFILE="user.list" 
PWFILE="passwd.list"

LOGFILE="/var/log/messages"
LOCKFILE="/var/log/file.lock"

# add lock 
if [ -f "$LOCKFILE" ]
then
	pid=`cat $LOCKFILE`
	pstree -p | grep $pid >/dev/null 
	[ $? = 0 ] && echo "script is running..." && exit 1
fi
	
echo $$ > "$LOCKFILE"


# accept argument

while [[ $# > 1 ]]
do
	case $1 in
	   -u | -U) shift
		[ -f "$1" ] && USRFILE="$1" 
		;;
	   -p | -P) shift
		[ -f "$1" ] && PWFILE="$1" 
		;;
	      *   ) shift;;
	esac
done

USRNM=""
USRGRPS=""
USRGRP=""
USRHM=""
USRPW=""

USRCNT=0
PWCNT=0
USRINDX=1
USRCNT=`wc -l $USRFILE | awk '{print $1}'`
PWCNT=`wc -l $PWFILE | awk '{print $1}'`

# check user count should equlas passwd  count.
if [ "$USRCNT" -ne "$PWCNT" ]
then
	echo "exit because: user count is not equal passwd count " 
	rm -f $LOCKFILE
	exit 1
fi
# add new group
addgrp

# add user and password
for (( USRINDX=1; USRINDX <= USRCNT; USRINDX++ ))
do
	line=`tail +$USRINDX $USRFILE | head -n 1`
	pw=`tail +$USRINDX $PWFILE | head -n 1`

	USRNM=`echo $line | awk '{ print $1}'`
	USRGRPS=`echo $line | awk '{print $2}'`
	USRHM=`echo $line | awk '{print $3}'`
	USRGRP=${USRGRPS%%,*}
	addusr $USRNM $USRGRP $USRHM $USRGRPS
	addpw $USRNM $pw	

done

unset USRINDX USRFILE PWFILE LOGFILE  LOCKFILE USRNM
unset USRGRPS USRHM USRGRP USRCNT PWCNT

# unlock 
rm -f $LOCKFILE

exit $?