Looking for help with Bash script to search folders, rename, and output to text file

ExitRitual · 01-04-2011, 10:46 AM

Hello all! First post and all that.
I'm hoping some kind-soul can help me out with a bash script.

I'm trying to figure out how to get a script to:

scan folders and sub folders of specified directory for any file with the extension .jpg or .png
minimum folder depth of 3
if only 1 image, rename to Folder.<original extension>
if 0 or more than 1, output folder path to /<user name>/documents/follow-up.txt
if 1 image found & dimensions below 400x400 output to above txt file
if 1 image found & has non-square dimensions, output to above txt file

I've googled as best i can, found tutorials, but i admit; It's all very confusing for me. I don't handle lines of text all too well. Much more of an image person. Down-side to being a graphic designer, i suppose

What it's for:
I'm trying to finally finish cleaning up my music collection, and the album art (or lack thereof) is my final hurdle.

The minimum folder depth is to make it so that only album folders are scanned. My collection is organised as so: /Music/<basic genre>/<artist>/<album>, and i would be launching the script from /music.

Parts of what i can find and understand tell me that i can find the image types with:
find / -name ‘.jpg’ -o -name ‘.png’

And i can compare a list of folders with and without the search results with:
find ./* -mindepth 3 -type d > albums
diff albums has_art > needs_art
less needs_art

I realise half of the snippets of code i've found are probably laughably wrong, but hey. I'm trying

Any and all help appreciated.

unSpawn · 01-04-2011, 01:01 PM

Code:

#!/bin/bash
COUNTER=0
# scan folders and sub folders of specified directory 
[ $# -eq 0 -o $# -gt 1 -o -d "$1" ] || { echo "No directory name given, exiting."; exit 1; }
# for any file with the extension .jpg or .png
find "$1" -iname \*.jpg -o -iname \*.png | \
# minimum folder depth of 3 
# there is -maxdepth but no -mindepth
while read RESULT; do
# if 0 
# 'find' doesn't output anything if it doesn't match criteria
((COUNTER++))
# more than 1, output folder path to /<user name>/documents/follow-up.txt
[ $COUNTER -gt 1 ] && echo "output ${RESULT//\/*/} to ~/documents/follow-up.txt"
# if only 1 image, rename to Folder.<original extension>
[ $COUNTER -eq 1 ] && echo "rename ${RESULT//\/*/} to ${RESULT//\/*/}.EXTENSTION=${RESULT//*./}"
RESULTSIZE=($(file "${RESULT}" 2>/dev/null))
# Should use checkNumeric() { declare -i chkvar; str="$1"; [ $str -eq 0 ] 2>/dev/null && str=1; let "foo=${str}" 2>/dev/null || return 127; } here...
# if 1 image found & dimensions below 400x400 output to above txt file
[ ${RESULTSIZE[4]} -lt 400 -o ${RESULTSIZE[6]//,/} -lt 400 ] && echo "output ${RESULT} to ~/documents/follow-up.txt"
# if 1 image found & has non-square dimensions, output to above txt file
[ ${RESULTSIZE[4]} -ne ${RESULTSIZE[6]//,/} ] && echo "output ${RESULT} to ~/documents/follow-up.txt"
done; exit 0

Way crude but I spose it's a start for refining things.

ExitRitual · 01-04-2011, 01:03 PM

Quote:

Originally Posted by unSpawn

Code:

#!/bin/bash
COUNTER=0
# scan folders and sub folders of specified directory 
[ $# -eq 0 -o $# -gt 1 -o -d "$1" ] || { echo "No directory name given, exiting."; exit 1; }
# for any file with the extension .jpg or .png
find "$1" -iname \*.jpg -o -iname \*.png | \
# minimum folder depth of 3 
# there is -maxdepth but no -mindepth
while read RESULT; do
# if 0 
# 'find' doesn't output anything if it doesn't match criteria
((COUNTER++))
# more than 1, output folder path to /<user name>/documents/follow-up.txt
[ $COUNTER -gt 1 ] && echo "output ${RESULT//\/*/} to ~/documents/follow-up.txt"
# if only 1 image, rename to Folder.<original extension>
[ $COUNTER -eq 1 ] && echo "rename ${RESULT//\/*/} to ${RESULT//\/*/}.EXTENSTION=${RESULT//*./}"
RESULTSIZE=($(file "${RESULT}" 2>/dev/null))
# Should use checkNumeric() { declare -i chkvar; str="$1"; [ $str -eq 0 ] 2>/dev/null && str=1; let "foo=${str}" 2>/dev/null || return 127; } here...
# if 1 image found & dimensions below 400x400 output to above txt file
[ ${RESULTSIZE[4]} -lt 400 -o ${RESULTSIZE[6]//,/} -lt 400 ] && echo "output ${RESULT} to ~/documents/follow-up.txt"
# if 1 image found & has non-square dimensions, output to above txt file
[ ${RESULTSIZE[4]} -ne ${RESULTSIZE[6]//,/} ] && echo "output ${RESULT} to ~/documents/follow-up.txt"
done; exit 0

Way crude but I spose it's a start for refining things.

Thank you! I shall now run off like an excited child and try this

Reuti · 01-05-2011, 04:48 AM

Quote:

Originally Posted by unSpawn

Code:

# there is -maxdepth but no -mindepth

Why shouldn't there be a -mindepth? My find has this option too.

grail · 01-05-2011, 04:53 AM

I don't think the idea is that -mindepth does not exist, but rather that it is not being used or needed

Edit: My bad ... appears I did not read all of the code first ... please ignore

EricTRA · 01-05-2011, 04:55 AM

Hi,

As does mine. From the man page:

Code:

-mindepth levels
Do not apply any tests or actions at levels less  than  levels  (a
non-negative integer).  -mindepth 1 means process all files except
the command line arguments.

Kind regards,

Eric

unSpawn · 01-05-2011, 05:07 AM

Apparently there is. Obviously I never needed it else I would have remembered that. Thanks all for pointing out switch existence.

grail · 01-05-2011, 06:02 AM

@unSpawn - would you please explain what the following is supposed to do:

Code:

RESULTSIZE=($(file "${RESULT}" 2>/dev/null))

I have used 'file' on several pictures but have had no size information returned

I get something like the following:

Code:

Pictures/0398.jpg: JPEG image data, JFIF standard 1.02

Just curious if file is supposed to produce something else? Or maybe for only certain pictures?

unSpawn · 01-05-2011, 07:31 AM

Quote:

Originally Posted by grail

RESULTSIZE=($(file "${RESULT}" 2>/dev/null))

This produces an array.

Quote:

Originally Posted by grail

I have used 'file' on several pictures but have had no size information returned

I get something like the following:

Code:

Pictures/0398.jpg: JPEG image data, JFIF standard 1.02

Just curious if file is supposed to produce something else? Or maybe for only certain pictures?

Crap. I didn't test JPEG... Luckily there's ImageMagick's 'identify':

Code:

RESULTSIZE=($(identify "${RESULT}" 2>/dev/null)); RESULTSIZE=($(RESULTSIZE[2]//x/ ))
[ ${RESULTSIZE[0]} -lt 400 -o ${RESULTSIZE[1]} -lt 400 ] && echo "output ${RESULT} to ~/documents/follow-up.txt"
[ ${RESULTSIZE[0]} -ne ${RESULTSIZE[1]} ] && echo "output ${RESULT} to ~/documents/follow-up.txt"