Back up files in linux

The below is the script to backup files in linux :

• copy the below script and name example.sh

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#!/bin/bash
#START

TIME=`date +"%b-%d-%y_%H-%M-%S"`            
FILENAME="backup-$TIME.tar.gz"     
SRCDIR="/path/to/source/folder"         #please change to your source folder         
DESDIR="/path/to/destination/folder"   # please change to your destination folder        
tar -cpzf $DESDIR/$FILENAME $SRCDIR

find /path/to/destination/folder/ -iname '*.tar.gz' -ctime +45 -exec rm -f {} \;  #please change to your destination folder
#END
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•  And change the mode of file example.sh

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 #chmod +x example.sh
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• And move the examle.sh file  

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#mv example.sh /bin/

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• Now edit crontab

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 #sudo crontab -e

 45 22 * * * example.sh    #Edit as your requirement

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