Shell Directory Backup and Restore - shell

Question

I have been making script that will back up and restore a directory. I want to make it better but I need some help.
At the moment the I have the file being saved as just backup.tgz I did have the date added onto the end but when I ran the restore function the I could only have it look for the backup.tgz and not the backup with the date extension. Is there any way to have it look for the most recent backup? Or even look for the backup given by user input?
I have also tried to add a progress bar and make incremental back ups but had no luck there either if someone could help?
Tar Code
#!/bin/bash
ROOT="/Users/Rory/Documents"
ROOT_EXCLUDE="--exclude=/dev --exclude=/proc --exclude=/sys --exclude=/temp --exclude=/run --exlucde=/mnt --exlcude=/media --exlude=$
DESTIN="/Users/Rory/BackUps"
BACKUP="backup.tgz"
CREATE="/dev /proc /sys /temp /run /mnt /media "
if [ "$USER" != "root" ]; then
echo "You are not the root user"
echo "To use backup please use: sudo backup"
exit
fi
clear
echo "************************************************"
echo "********* Backup Menu **************************"
echo "************************************************"
OPTIONS="BACKUP RESTORE DESTINATION EXIT"
LIST="1)BACKUP 2)RESTORE 3)DESTINATION 4)EXIT"
select opt in $OPTIONS; do
if [ "$opt" = "EXIT" ]; then
echo "GOODBYE!"
sleep 3
clear
exit
elif [ "$opt" = "BACKUP" ]; then
echo "BACKING UP FILES..."
sleep 2
tar cvpfz $DESTIN/backup.tgz $ROOT $ROOT_EXCLUDE
echo "BACKUP COMPLETE"
sleep 2
clear
echo $LIST
elif [ "$opt" = "RESTORE" ]; then
echo "RESTOTING FILES..."
sleep 2
tar xvpfz $DESTIN/$BACKUP -C /Users/Rory/BackUps
sleep 2
if [[ -e "/proc" ]]; then
echo "$CREATE already exists! "
else
mkdir $CREATE
echo "$CREATE are created! "
fi
echo "RESTORE COMPLETE..."
clear
exit
elif [ "$opt" = "DESTINATION" ]; then
echo "CURRENT DESTINATION: $DESTIN/backup.tgz "
echo "TO CHANGE ENTER THE NEW DESTINATION..."
echo "TO LEAVE IT AS IS JUST PRESS ENTER..."
read NEW_DESTIN
#IF GREATER THEN 0 ASSIGN NEW DESTINATION
if [ ${#NEW_DESTIN} -gt 0 ]; then
DESTIN = "$NEW_DESTIN"
fi
clear
else
clear
echo "BAD INPUT!"
echo "ENTER 1 , 2, 3 or 4.."
echo $LIST
fi
done

Answer 1

Well, in the code snippet you posted, you are only looking for backup.tgz.
If you wanted to pick a specific one, you could modify your script to accept an argument and pick one based on a string you input. Or...if you wanted to do based on "how old", you could sort the backup files by date and allow the user to pick 0th, 1st, 2nd, etc.
One thing you may want to check out is rsync. Rsync can only copy files that have changed.
Plus, you can also enable a progress bar with rsync = )
rsync -avP /source/path/ /dest/path/
Check out the man page for more details man rsync
To enable progress bar on restore, you can untar the file and use rsync in reverse, and then you have progress updates = )
If you want to make this a custom numeric progress bar you'll probably need to do something more complicated than simply taking output from rsync.