Yrurtj

I can get all jpg images by using:

find . -name "*.jpg"  

But how can I add png files to the results as well?

Use the -o flag between different parameters.

find ./ -type f ( -iname *.jpg -o -iname *.png ) works like a charm.

NOTE There must be a space between the bracket and its contents or it won't work.

Explanation:

• 
  type -f - only search for files (not directories)


• 
  ( - needed for the type -f to apply to all arguments


• 
  -o - logical OR operator


• 
  -iname - like -name, but the match is case insensitive

You can combine criteria with -o as suggested by Shadur. Note that -o has lower precedence than juxtaposition, so you may need parentheses.

find . -name '*.jpg' -o -name '*.png'

find . -mtime -7 ( '*.jpg' -o -name '*.png' )  # all .jpg or .png images modified in the past week

On Linux, you can use -regex to combine extensions in a terser way. The default regexp syntax is Emacs (basic regexps plus a few extensions such as | for alternation); there's an option to switch to extended regexps.

find -regex '.*.(jpg|png)'

find -regextype posix-extended -regex '.*.(jpg|png)'

On FreeBSD, NetBSD and OSX, you can use -regex combined with -E for extended regexps.

find -E . -regex '.*.(jpg|png)'

This is more correct:

find . -iregex '.*.(jpg|gif|png|jpeg)$'

To make it clear, the only optio that works on Linux, Unix and OS X flavour is:

find -E . -regex '.*.(jpg|png)'

That's because the OS X version is a little bit different, but that's important to write things that go well on most platforms.

/.(jpe?g|png|gif|bmp)$/i;

Use it.