Script to change all name prefix in a directory

The unix script to remove all file name prefix of 2 digits. example :

03 What is this about.txt

for name in [0-9][0-9]*
do 
    newname="$(echo "$name" | cut -c4-)"
    mv "$name" "$newname"
    echo ${newname}
    
done

This uses bash command substitution to remove the first 3 characters from the input filename via cut, and stores that in $newname. Then it renames the old name to the new name. This is performed on every file.

cut -c4- specifies that only characters after index 4 should be returned from the input. 4- is a range starting at index 7 with no end; that is, until the end of the line.

Reference:

http://unix.stackexchange.com/questions/47367/bulk-rename-change-prefix