Sort JPG images by EXIF date in Ruby

Everybody now has a digital camera, and, during special events everybody takes plenty of pictures, and you end up with all these JPG images from different cameras. Each set of pictures tells the same story from the beginning, so it would be great to be able to reinterleave all of them in order to tell one single story.

That what the folllowing little Ruby script does, thanks to the libexif-ruby library. If you run it in a directory with JPG images, it will create a subdirectory and copy all images, renaming them, prefixing with the EXIF date set by the camera.

First, install the libexif-ruby library. On Ubuntu you can type :
<br />sudo apt-get install libexif-ruby<br />
Then copy the following script in a ruby script file :
<br />#!/usr/bin/ruby<br /><br />require 'exif'<br />require 'ostruct'<br />require 'fileutils'<br />include FileUtils::Verbose<br /><br />SUBDIR='exifsorted'<br /><br />files = Dir.glob('*.{JPG,jpg}').entries.map { |name| OpenStruct.new({"name"=>name, "date"=>Exif.new(name)['Date and Time'].gsub(/ |:/,'')})}<br />if(File.exist?(SUBDIR))<br /> puts("Error : #{SUBDIR} directory already exist, delete it")<br /> exit(1)<br />end<br />mkdir SUBDIR<br />files.each do |file|<br /> cp(file.name,File.join(SUBDIR,file.date + '_' + file.name))<br />end <br />

An other Nautilus script : create directory with date

I've already described how to add custom scripts for Gnome file manager, Nautilus. So here is a an other simple script : it allows to create a directory with the name prefixed by the current date, via the contextual menu (right click) of Nautilus in the window of an other directory.
Just type the name of the directory in the popup dialogue ; spaces will automatically replaced by underscores.

You must install XDialog to be able to use this script.
On Ubuntu :
<br />sudo apt-get install xdialog<br />
And here is the script :
<br />#!/bin/sh<br /><br />CURRENTDATE=`date +%y.%m.%d`<br />DIRNAME=`Xdialog --title "Directory with date creation" --inputbox "Date : $CURRENTDATE\nDirectory name ?" 8 45 2>&1`<br />case $? in<br />0) mkdir $CURRENTDATE.${DIRNAME// /_};;<br />1) exit;;<br />esac<br /><br />

Nautilus File Manager scripts : Scale JPG images

I really appreciate the feature of Nautilus (Gnome file manager) that allows the use of custom scripts via the right click contextual menu. To be seen by Nautilus, the scripts must be copied in a specific directory ; you can reach this directory with :
Right clic in any directory window --> Scripts --> Open Scripts Folder

For example here is a bash script that can be used to scale all JPG images in a directory (a directory is created and the scaled images are copied into this directory).

You must install XDialog and ImageMagick to be able to use this script.
On Ubuntu :
<br />sudo apt-get install xdialog<br />sudo apt-get install imagemagick<br />

Then copy the script in the script directory of nautilus :

<br />#!/bin/sh<br /><br />CURRENTDIR=`pwd`<br /><br />SIZE=`Xdialog --stdout --title "Image Scaling" --radiolist "Scaling images in \n$CURRENTDIR\npick a size !" 0 0 0 640 "640 pixels" 0 800 "800 pixels" 0 1024 "1024 pixels" 0 1920 "1920 pixels" 0 2>&1`<br /><br />if [ "$?" = "1" ] ; then<br /> exit 0<br />fi<br /><br />TARGET="R"$SIZE<br />mkdir $TARGET<br /><br />for j in '*.jpg' '*.JPG' ;do<br /> for f in $j ;do<br /> convert -quality 88 -geometry $SIZE "$f" $TARGET/"${TARGET}_$f"<br /> done<br />done<br /><br />Xdialog --title "Image Scaling" --msgbox "Image scaling done in :\n"$CURRENTDIR/$TARGET 0 0<br /><br />exit 0<br />