Update README.md

README.md

@@ -1,2 +1,15 @@
 # mass_rename
-This BASH script is for mass renaming and moving of files. This can be helpful if you have a lot of media files that need to imported into applications such as Jellyfin.
+This BASH script is for mass renaming and moving of files. 
+
+### Why this maybe useful
+Need to rename media files for use in an application such as; PLEX, Jellyfin, etc..
+Want torename picuture from trip so you can group them together
+
+Basic code
+```
+ls | while read line
+do echo $line
+mv "$line" "$(echo -e "$line" |sed -e 's///' -e 's///' )"
+done
+```
+This will subsittute the oldname for the new name.