$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal
$
####
ls | perl -nle 'BEGIN {$counter=0}; $old=$_;$new="image"."$counter".".jpg";
+rename($old,$new);$counter++;'
$
##
##
$ ls | perl -nle 'BEGIN {$counter=0}; $old=$_;$new="image"."$counter"."jpg";
> +rename($old,$new);$counter++;'
$ ls | perl -nle 'BEGIN {$counter=0}; $old=$_;$new="image"."$counter".".jpg";
+rename($old,$new);$counter++;'
$
##
##
$ pwd
/home/hogan/6.scripts.personal/1.umatilla.1./template_stuff/aimages
$ ls
image0.jpg image12.jpg image15.jpg image3.jpg image6.jpg image9.jpg
image10.jpg image13.jpg image1.jpg image4.jpg image7.jpg
image11.jpg image14.jpg image2.jpg image5.jpg image8.jpg
$
##
##
ls | perl -nle 'BEGIN {$counter=0}; $old=$_;$new="caption"."$counter".".txt";
+rename($old,$new);$counter++;'
##
##
$ pwd
/home/hogan/6.scripts.personal/1.umatilla.1./template_stuff/captions
$ ls
caption0.txt caption13.txt caption2.txt caption6.txt
caption10.txt caption14.txt caption3.txt caption7.txt
caption11.txt caption15.txt caption4.txt caption8.txt
caption12.txt caption1.txt caption5.txt caption9.txt
$