====== How to adjust the exif time/date of a jpeg photo ? ======

If you made some photos with a camera having a wrong date/time, the corresponding exif metadata are wrong for each photos. Then, you can use the ''jhead'' software to adjust dates of these photos.

This command will subtract 11 hours and 40 minutes to each ''jpg'' files in the current directory:
<code>jhead -ta-11:40 *.[jJ][pP][gG]</code>

If you want to add 2 hours and 15 minutes:
<code>jhead -ta+02:15 *.[jJ][pP][gG]</code>
 
Of course the ''jhead'' tool can do a lot more: just type ''man jhead'' and read !
For example, you can rename all your photo filenames from there dates: <code>jhead -n%Y%m%d-%Hh%M-%04i *.[jJ][pP][gG]</code>

{{tag>article english computing jhead photo exif date time jpeg}}

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