find - Packet jpeg optimization in linux -

i have many jpeg images on server , added evry day. need optimize images.

to optimize have use next command

find . -iname "*.jpg" -exec jpegoptim -m85 --strip-all {} \; 

but find command finds images, not new! know, may specify -ctime , -mtime params, when jpegoptim optimizes image, image creation time changes now! therefore can not specify last mod time find command.

i think, solution save processed files names in text file , when find command runs again exclude processed file.

how can this? how add finded file name in text file, , how check file name in text file in next path?

you use inotifywait inotify-tools (or other inotify frontend) continuously monitor folder contains jpegs , have them converted on fly, uploaded.

$ inotifywait -mrq --format '%w%f' -e create . | while read file;       [ "${file##*.}" = "jpg" ] || continue;       [ -f "${file}" ] || continue;       echo "jpegoptim -m85 --strip-all '$file'";   done 

this watches file creations in current folder (-e create .) recursively (-r) , have check file extension (.jpg) shown, means in case there lots of non-jpeg creations in same folder unnecessary overhead. if problem you, use --exclude argument , specify negated regex filter out files not match desired extension (which cumbersome , not nice , straight-forward) or can checkout current version git repo provides --include filter (v3.14 not have it) , have inotifywait report files matching criteria.

also note silently skip files newlines in filenames.