Bash Shell rename multiple file name

Question

I need to rename files like

filename-367519.mp4 
otherfilename-367515.mp4
andotherfilename-377530.mp4

to

367519-filename.mp4
...

Answer 1

I wrote a simple script for you.

#!/bin/bash

full_filename=$(basename $1)
filename_noextension="${full_filename%%.*}"

filename=$(echo "$filename_noextension" | cut -d"-" -f1);
number=$(echo "$filename_noextension" | cut -d"-" -f2);
extension="${full_filename##*.}"

result="$number-$filename.$extension"

mv $1 $result

run it with: bash ./rename.sh filename-367519.mp4

Note that command cut use sign - as delimiter, and later it is used in result="$number-$filename.$extension" as just a string.

Reference: http://wiki.bash-hackers.org/syntax/pe#substring_removal