Add description for the script tag_photo.sh

README.md

@@ -13,6 +13,7 @@ Some useful scripts (for me) that can be added to $PATH :)
 * num_circle: Transform a number into a digit with a circle.
 * pomodoro: Print a task and a timer in a file. Try to apply Pomodoro Technique!
 * snapsend.sh: Send a ZFS snapshot to a remote host.
+* tag_photo.sh : Add an exif tag to images.
 * test_ssl3: Test if a website supportes the SSLV3 protocol.
 * veille.sh: Kill every sensitive process and files then lock the screen.
 * vimmanpager: Tiny script can be used as PAGER, it will call VIM!
@@ -88,6 +89,25 @@ Then the script will:
 * I can display my current task and it's timer wherever i want (tmux, herbstluftwm, …)
 * Written to work with /bin/sh
 
+## tag_photo.sh
+The main goal is to have a solution to know the "subject" of a picture without to open it and no really good name. It can happen if you delete your pictures and get it back with `photorec` or `foremost`. For this i use the Exif metadata.
+
+You can simply launch the script with your pictures directory :
+
+``` sh
+tag_photo.sh /tmp/Images
+```
+
+Then the script will :
+* List all subdirectories.
+* Get the basename of each directory and add it as the value of the Exif "description" tag for each images.
+
+To see the result, you can display the tags "File Name" and "Description" of you images :
+
+```sh
+find /tmp/Images -type f -iregex '.*\.\(jpg\|gif\|png\|jpeg\)$' -exec exiftool {} -FileName -Description \;
+```
+
 ## Test_ssl3
 Redhat's script to test if an LDAP server support SSLv3.