Shell script for search for no password entries and lock all accounts
Posted in Security
#!/bin/bash # Shell script for search for no password entries and lock all accounts # ------------------------------------------------------------------------- # Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/> # This script is licensed under GNU GPL version 2.0 or above # ------------------------------------------------------------------------- # This script is part of nixCraft shell script collection (NSSC) # Visit http://bash.cyberciti.biz/ for more information. # ------------------------------------------------------------------------- # Set your email ADMINEMAIL="admin@somewhere.com" ### Do not change anything below ### #LOG File LOG="/root/nopassword.lock.log" STATUS=0 TMPFILE="/tmp/null.mail.$$" echo "-------------------------------------------------------" >>$LOG echo "Host: $(hostname), Run date: $(date)" >> $LOG echo "-------------------------------------------------------" >>$LOG # get all user names USERS="$(cut -d: -f 1 /etc/passwd)" # display message echo "Searching for null password..." for u in $USERS do # find out if password is set or not (null password) passwd -S $u | grep -Ew "NP" >/dev/null if [ $? -eq 0 ]; then # if so echo "$u" >> $LOG passwd -l $u #lock account STATUS=1 #update status so that we can send an email fi done echo "========================================================" >>$LOG if [ $STATUS -eq 1 ]; then echo "Please see $LOG file and all account with no password are locked!" >$TMPFILE echo "-- $(basename $0) script" >>$TMPFILE mail -s "Account with no password found and locked" "$ADMINEMAIL" < $TMPFILE # rm -f $TMPFILE fi
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Tags: /etc/passwd, eq, ew, fi, for loop, grep command, if command, loop method, mail command, np, null password, passwd command, password entries, shell loops ~ Last updated on: April 10, 2008
Can you give me some information security measures?