CODE EXAMPLE FOR SHELL

bash remove all files in directory except a few

## Ensure you enable this first!
shopt -s extglob

## Delete all file except file1 ##
rm  !(file1)
 
## Delete all file except file1 and file2 ##
rm  !(file1|file2) 
 
## Delete all file except all zip files ##
rm  !(*.zip)
 
## Delete all file except all zip and iso files ##
rm  !(*.zip|*.iso)
 
## You set full path too ##
rm /Users/vivek/!(*.zip|*.iso|*.mp3)
 
## Pass options ##
rm [options]  !(*.zip|*.iso)
rm -v  !(*.zip|*.iso)
rm -f  !(*.zip|*.iso)
rm -v -i  !(*.php)