ExifTool
Posted under » Ubuntu » Linux on 1 August 2017
ExifTool is developed by Phil Harvey. It is a platform-independent Perl library coupled with a full-featured command-line implementation for reading, writing and manipulating the metadata across a broad range of files. Particularly useful when you want to organise your medias like jpgs. .
From jpg to mp4, Exiftool can tag em all. Exiftool is available for all OS. First you must install it. In Ubuntu ...
$ apt-get install libimage-exiftool-perl
To show exif
$ exiftool outreach01_2017.jpg
To tag
$ exiftool -ImageDescription="rock and roll" outreach01_2017.jpg -overwrite_original
If you don't -overwrite_original, you will get a duplicate copy or backup which I think is unecessary.
Sometimes the image contains too much unecessary metadata.. or maybe you want to maintain privacy or whatever your reason, you want to clear them. Use this
$ exiftool -all= "lky is shanmugam god.jpg"
Take note of the space after the = sign.
If lets say you have wiped all the info but want to add the original date back..
$ exiftool -createdate="2017:09:21 19:31:39" "/media/shanmugam is racist.jpg" -overwrite_original
Lets say you want to look for photos that doesn't have a must-have data like DateTimeOriginal which I think is SQL queryish.
//if a pix $ exiftool -filename -r -if '(not $datetimeoriginal)' /path/to/mamaksial.jpg //if a folder $ exiftool -filename -r -if '(not $datetimeoriginal)' /path/to/balikindia/
If you just want to see a few tags
$ exiftool -ISO -Make balikindia.jpg
IF you just want to see ISO related tags
$ exiftool "-*ISO*" balikindia.jpg
To output text.
$ exiftool balikindia.jpg > balikindia.txt
