user_manager.sh

#!/bin/sh
while [ 1 ]
do
        echo "Input command[ 1,2,3,q ]...."
        echo "1 ----- Create Group"
        echo "2 ----- Create User"
        echo "3 ----- Backup User Directory"
        echo "4 ----- Auto-backup User Directory everyday at 12:00PM"
        echo "q ----- Quit"
        read answer
        case $answer in
                1)
                        echo "Enter Group Name"
                        read gname
                        egrep "^$gname:" /etc/group > /dev/null
                        if [  $? -eq 0 ]
                        then
                                echo "Already exited group name."
                                continue
                        fi
                        gstr="groupadd $gname"
                        eval $gstr
                        echo "$gname group added";;
                2)
                        echo "Enter User Name"
                        read uname
                        egrep "^$uname:" /etc/passwd > /dev/null
                        if [ $? -eq 0 ]
                        then
                                echo "Already exited user name."
                                continue
                        fi
                        egrep "^$gname:" /etc/group > /dev/null
                        if [ $? -eq 0 ]
                        then
                                ustr="useradd -g $uname $uname"
                                eval $ustr
                        else
                                ustr="useradd $uname"
                                eval $ustr
                        fi
                        echo "$uname user added";;
                3)
                        fname="/home/userbackup/"
                        if [ ! -e $fname ]
                        then
                                mkdir -p /home/userbackup
                                chmod 777 /home/userbackup
                                echo "Create Backup Directory!"
                        fi
                        echo "Enter User Name to backup"
                        read dbp
                        egrep "^$dbp:" /etc/passwd > /dev/null
                        if [ $? -ne 0 ]
                        then
                                echo "User not found"
                                continue
                        else
                                srcdir="/home/$dbp/"
                                filename=$dbp-$(date +%-Y%-m%-d).tar.gz
                                tar zcvf $fname$filename $srcdir
                        fi
                        ls -l /home/userbackup/
                        ;;
                4)
                        fname="/home/userbackup/"
                        if [ ! -e $fname ]
                        then
                                mkdir -p /home/userbackup
                                chmod 777 /home/userbackup
                                echo "Create Backup Directory!"
                        fi
                        echo "Enter User Name to auto-backup"
                        read dbp
                        egrep "^$dbp:" /etc/passwd > /dev/null
                        if [ $? -ne 0 ]
                        then
                                echo "User not found"
                                continue
                        else
                                srcdir="/home/$dbp/"
                                filename=$dbp-auto-backup.tar.gz
                                crontab -lu $dbp >> autobackup.tmp
                                echo "0 12 * * * tar zcvf $fname$filename $srcdir" >> autobackup.tmp
                                crontab -u $dbp autobackup.tmp
                                rm -rf autobackup.tmp
                                crontab -lu $dbp
                        fi
                        ;;
                q)
                        echo "BYE!!"
                        exit 0;;
                *)
                        echo "Commend not found."
        esac
done