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Full Discussion: Shell script help
Top Forums Shell Programming and Scripting Shell script help Post 302467703 by jalite19 on Saturday 30th of October 2010 08:55:18 PM
Old 10-30-2010
Shell script help
I am new to shell scripting, I need to write a korn shell script that will delete user unix account and remove their home directory. detail requirement:
1. a user list that contains tens users. format as: username RealName description.
2. check each user if they have unix account in the server, create a new userlist file that only contain username of those who has valid account
3. check each username from the new userlist if they still have active logon session.
4. list out who still has active session if there is, then exit script with no further action
5. if none of them has active session, then delete user account, tar/gz user's home directory and move to a different folder
6. log all actions to a report file, and append report to a full_log file.

Here is the script I wrote, but I don't know how to add point 4 above, please also help to improve it

Quote:
#!/bin/ksh

WORK_DIR=/var/tmp/del_user
HOME_DIR=/home
LOGFILE=report.`uname -n`

typeset USER_LIST=${1}

if [ "$#" -ne 2 ]
then
echo "usage: deluser.ksh <userlist file> <SCR#>"
exit 1
fi

# convert user list file to userid only file
cut -d' ' -f1 ${USER_LIST} |tr '[A-Z]' '[a-z]' |sort > full_id_list

# check if user has vailid unix account, if yes, add to userid.out file
for USER in $(awk '{print $1}' full_id_list);
do
echo "Checking Unix account for user $USER" >> ${WORK_DIR}/$LOGFILE
/usr/bin/grep $USER /etc/passwd >> ${WORK_DIR}/$LOGFILE 2>/dev/null
if [ "$?" -eq 0 ]
then
echo $USER >> userid.out
fi
done

# If we found users who have valid account, delete them and tar and gz their home direct, remove to /home/to-be-delete folder.
# If none of the user has vaild account, echo out and exit script without any action
if [ -f userid.out ]
then
echo "Following accounts and their Unix home directories will be removed" >> ${WORK_DIR}/$LOGFILE
cat userid.out |tee -a ${WORK_DIR}/$LOGFILE
for ID in `cat userid.out`
do
rmuser -p $ID #AIX command the remove user account with all its attributes
tar cvf - ${HOME_DIR}/$ID |gzip > ${HOME_DIR}/to-be-delete/${ID}.tar.gz #tar/gz user home directory
rm -r ${HOME_DIR}/${ID}
done
else
echo "none of the user in the list has valid Unix account" |tee -a ${WORK_DIR}/$LOGFILE
echo " ----- End ----- "
fi

cat ${WORK_DIR}/$LOGFILE >> ${WORK_DIR}/fulllog.log
mv ${WORK_DIR}/$LOGFILE ${WORK_DIR}/$LOGFILE.`(date +%Y%m%d)`
rm userid.out 2>/dev/null
rm full_id_list

exit
Last edited by jalite19; 11-01-2010 at 03:58 AM.. Reason: php tags -> code tags
 

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LEARN ABOUT DEBIAN

delgroup

DELUSER(8)						      System Manager's Manual							DELUSER(8)

NAME

       deluser, delgroup - remove a user or group from the system

SYNOPSIS

       deluser [options] [--force] [--remove-home] [--remove-all-files] [--backup] [--backup-to DIR] user

       deluser --group [options] group
       delgroup [options] [--only-if-empty] group

       deluser [options] user group

   COMMON OPTIONS
       [--quiet] [--system] [--help] [--version] [--conf FILE]

DESCRIPTION

       deluser	and  delgroup  remove  users  and  groups  from  the  system  according  to  command line options and configuration information in
       /etc/deluser.conf and /etc/adduser.conf.  They are friendlier front ends to the userdel and groupdel programs, removing the home  directory
       as  option  or even all files on the system owned by the user to be removed, running a custom script, and other features.  deluser and del-
       group can be run in one of three modes:

   Remove a normal user
       If called with one non-option argument and without the --group option, deluser will remove a normal user.

       By default, deluser will remove the user without removing the home directory, the mail spool  or any other files on the system owned by the
       user. Removing the home directory and mail spool can be achieved using the --remove-home option.

       The  --remove-all-files option removes all files on the system owned by the user. Note that if you activate both options --remove-home will
       have no effect because all files including the home directory and mail spool are already covered by the --remove-all-files option.

       If you want to backup all files before deleting them you can activate the --backup option which will create a  file  username.tar(.gz|.bz2)
       in  the directory specified by the --backup-to option (defaulting to the current working directory). Both the remove and backup options can
       also be activated for default in the configuration file /etc/deluser.conf. See deluser.conf(5) for details.

       If you want to remove the root account (uid 0), then use the --force parameter; this may prevent to remove the root user by accident.

       If the file /usr/local/sbin/deluser.local exists, it will be executed after the user account has been removed in  order	to  do	any  local
       cleanup. The arguments passed to deluser.local are:
       username uid gid home-directory

   Remove a group
       If deluser is called with the --group option, or delgroup is called, a group will be removed.

       Warning: The primary group of an existing user cannot be removed.

       If the option --only-if-empty is given, the group won't be removed if it has any members left.

   Remove a user from a specific group
       If called with two non-option arguments, deluser will remove a user from a specific group.

OPTIONS

       --conf FILE
	      Use FILE instead of the default files /etc/deluser.conf and /etc/adduser.conf

       --group
	      Remove a group. This is the default action if the program is invoked as delgroup.

       --help Display brief instructions.

       --quiet
	      Suppress progress messages.

       --system
	      Only  delete  if	user/group is a system user/group. This avoids accidentally deleting non-system users/groups. Additionally, if the
	      user does not exist, no error value is returned. This option is mainly for use in Debian package maintainer scripts.

       --backup
	      Backup all files contained in the userhome and the mailspool-file to a file named /$user.tar.bz2 or /$user.tar.gz.

       --backup-to
	      Place the backup files not in / but in the directory specified by this parameter. This implicitly sets --backup also.

       --remove-home
	      Remove the home directory of the user and its mailspool. If --backup is specified, the files are deleted after having performed  the
	      backup.

       --remove-all-files
	      Remove all files from the system owned by this user. Note: --remove-home does not have an effect any more. If --backup is specified,
	      the files are deleted after having performed the backup.

       --version
	      Display version and copyright information.

RETURN VALUE

       0      The action was successfully executed.

       1      The user to delete was not a system account. No action was performed.

       2      There is no such user. No action was performed.

       3      There is no such group. No action was performed.

       4      Internal error. No action was performed.

       5      The group to delete is not empty. No action was performed.

       6      The user does not belong to the specified group. No action was performed.

       7      You cannot remove a user from its primary group. No action was performed.

       8      The required perl-package 'perl modules' is not installed. This package is required to perform the requested actions. No action  was
	      performed.

       9      For removing the root account the parameter "--force" is required. No action was performed.

FILES

       /etc/deluser.conf

SEE ALSO

       deluser.conf(5), adduser(8), userdel(8), groupdel(8)

COPYRIGHT

       Copyright (C) 2000 Roland Bauerschmidt. Modifications (C) 2004 Marc Haber and Joerg Hoh.  This manpage and the deluser program are based on
       adduser which is:
       Copyright (C) 1997, 1998, 1999 Guy Maor.
       Copyright (C) 1995 Ted Hajek, with a great deal borrowed from the original Debian adduser
       Copyright (C) 1994 Ian Murdock.	deluser is free software; see the GNU General Public Licence version 2 or later  for  copying  conditions.
       There is no warranty.

Debian GNU/Linux						Version 3.113+nmu3							DELUSER(8)
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