Shell Programming and Scripting

 
#!/bin/bash
########################################
Targetpath=/usr/Backup
if [ ! -d $Target-path ]
then
    mkdir -p $Targetpath
fi
####################################### Files to be backuped
a="/etc/passwd, /etc/group, /etc/shadow"
#######################################
create=`date +%a-%d-%b-%Y-AT:%H:%M`
########################################
for ln in `echo $a`
do
   lnn=`echo $ln | sed  "s/,//g"`
    if [ ! -e $lnn ]
    then
          echo "$lnn file not EXIST"
    fi
    lst=` echo $lnn | awk -F"/" '{print $NF}'`
    tar -jcf $Targetpath/$lst-$create.bz2 $lnn
done

 
[root@TESTLAB ~]# date
Sat Feb 11 11:54:02 IST 2012
[root@TESTLAB ~]# ls -lrt /usr/Backup/
total 12
-rw-r--r-- 1 root root 500 Feb 11 11:47 shadow-Sat-11-Feb-2012-AT:11:47.bz2
-rw-r--r-- 1 root root 938 Feb 11 11:47 passwd-Sat-11-Feb-2012-AT:11:47.bz2
-rw-r--r-- 1 root root 500 Feb 11 11:47 group-Sat-11-Feb-2012-AT:11:47.bz2
[root@TESTLAB ~]#

suffix=$(date +%d%b%y)
for filename in "/etc/password" "/etc/group" "/etc/shadow"
do
        # Remove echo when tested
        echo cp -p "${filename}" "${filename}.${suffix}"
done