brew install rename
to install
rename "s/SEARCH/REPLACE/g" *
This will replace the string SEARCH with REPLACE in every file (that is, *). The /g means global, so if you had a SEARCH_SEARCH.jpg, it would be renamed REPLACE_REPLACE.jpg. If you didn't have /g, it would have only done substitution once, and thus now named REPLACE_SEARCH.jpg. If you want case-insensitive, add /i (that would be, /gi or /ig at the end).
Uses Perl REGEX for i.e. ^ target beginning $ target end
Delete a string
rename 's/myString//' *
Add a Prefix
rename 's/^/MyPrefix_/' *
document.pdf renamed to MyPrefix_document.pdf
rename -n -N 0001 's/.*/$N.jpg/' *.jpg
sequentially rename a series of images (e.g. if there is an image sequence with some numbers missing in the sequence and you would like to rename everything sequentially).
rename 's/^CD RIP //' *
CD RIP 01 Song.mp3 to 01 Song.mp3
Notice the extra space in '^CD RIP ', without the space all files would have a space as the first character of the file. Also note, this will work without the ^character, but would match CD RIP in any part of the filename. The ^ guarantees it only removes the characters if they are the beginning of the file.
use -n