How to delete JPG files, but only if the matching RAW file exists?

Question

On debian terminal, I try to delete all .jpg of a folder and subfolder if .cr2 exist on the same folder.

Assumes they have the same name. 123.jpg 123.cr2

I know how to delete all .jpg with find command.

find {PATH} -type f -name '*.jpg' -delete

but how can I add a condition (if .cr2 exist)

I found this 10y topics but it's for windows and python

Remarkably, I was unable to find a duplicate for this, even though it seems like a FAQ. Thanks for filling a gap in the knowledge base! — tripleee, Oct 30 '21 at 07:51

Romeo Ninov · Accepted Answer · 2021-10-30T09:35:36.793

3

You can try something like:

shopt -s globstar
for i in /path/**.jpg
do
RAW=${i%.jpg}.cr2
if [ -f "$RAW" ]
then rm "$i"
fi
done

If you are fan of oneliners you can convert the script to something like:

shopt -s globstar; for i in /path/**.jpg; do [ -f "${i%.jpg}.cr2" ] && rm "$i"; done

edited Oct 30 '21 at 09:35

answered Oct 30 '21 at 06:53

Romeo Ninov

3

The `**` glob is supported by most modern shells, but it's not a POSIX feature. Some sites turn it off by default so you will then have to enable it separately. In Bash, `shopt -s globstar` – tripleee Oct 30 '21 at 07:35
@tripleee, thank you, will update the script – Romeo Ninov Oct 30 '21 at 07:42
1

Just FYI, you could replace your 3-line `if-then-fi` with `[ -f "$RAW" ] && rm "$i"` – Mark Setchell Oct 30 '21 at 09:21
@MarkSetchell, correct, but I prefer old school way ":) – Romeo Ninov Oct 30 '21 at 09:28
1

Cool - you already have my vote – Mark Setchell Oct 30 '21 at 09:29
1

@MarkSetchell, thank you. Probably the code can be shorten even more: `[ -f "${i%.jpg}.cr2" ] && rm "$i"` – Romeo Ninov Oct 30 '21 at 09:31
2

Indeed, and if you put semi-colons in too, before `do` and `done`, it can be a one-liner – Mark Setchell Oct 30 '21 at 09:33
Thank you very much everyone, it works! Seems not work for subfolder. Could you explain, waht's "**"? – overer Oct 31 '21 at 08:33
`**` mean exactly to search in current and subdirectories. As explained above in comments this is not standard feature. So it need to be activated (if shell support it) – Romeo Ninov Oct 31 '21 at 08:37

1 Answers1