[SOLVED] Info: resize a bunch of images for a netbook

TwinReverb · 01-17-2010, 04:46 PM

All,

Just for information's sake, I retooled my other script (thanks to those who helped) to work for resizing images for a netbook with 1024x600. Thanks to the ImageMagick website for help with the syntax. Here's what worked for me:

Code:

#!/bin/bash

for SRCFILE in /home/robert/Pictures/*/*/*/*/*/*/*
do
   RELPATH=`echo $SRCFILE | sed -e 's/\/home\/robert\/Pictures//'`
   DESTDIR="/home/robert/tmp/portable/${RELPATH%/*}"
   if [ ! -x "$DESTDIR" ]; then
      mkdir -p "$DESTDIR"
   fi
   DESTFILE="${SRCFILE##*/}"
   #DESTFILE="`basename "$DESTFILE" .flac`"
   #DESTFILE="$DESTFILE.mp3"
   convert "$SRCFILE" -resize 1024x600\> "$DESTDIR"/"$DESTFILE"
done

Hopefully some people with netbooks find this helpful. I figure anyone with a netbook is going to put a lower size/quality on their netbook and then keep the originals (music and pictures) on a different machine or an external hard drive. Anyways, enjoy! 8-) And thanks again for all the help!

David the H. · 01-18-2010, 07:45 AM

Good job. Here are a few suggestions for you to improve it even more.

If you're using bash version 4, there's a new globbing expression "**" that lets you work on a recursive directory tree.

Code:

shopt -s globstar     #turns it on if it isn't already.

for SRCFILE in /home/robert/Pictures/**

However, both this and your original will try to process everything in the tree, including subfolder names. It might be better to use find to filter out just the files you want.

Code:

for SRCFILE in $(find /home/robert/Pictures -type f -name "*.jpg")

Also, you shouldn't use backticks anymore. $() is the recommended way to embed commands.

Next, two comments concerning the sed command.
You can avoid the "picket fence" effect by changing the separator used in the s/// command. sed can use just about any ascii character, not just /.

Code:

RELPATH=$(echo $SRCFILE | sed -e 's%/home/robert/Pictures/%%')

But in this case you can avoid using sed entirely with another form of parameter substitution. (you will need to use backslash escapes here, however).

Code:

RELPATH=${SRCFILE/\/home\/robert\/Pictures\//)

Keep up the good work.