Modify Date - change

[Joyce]

Total newbie -

Can someone help with the command to change the date only in the Modify Date field?  I must be doing something wrong. 

Thanks,

Joyce

[StarGeek]

The ModifyDate tag is a date/time tag, so any single argument is assumed to be a time shift value (see ExifTool Date/Time Shift Module for more info).  So, to increment/decrement it by day, you'll need a second argument to hold the place of the time.  As an example, to add a day, try (use single quotes for non-windows system):
ExifTool -ModifyDate+="1 0" FILE/DIR

[Joyce]

 Thank you this worked but I am not sure I still understand what the zero does? . 

ExifTool -ModifyDate+="1 0" FILE/DIR


Joyce

[Phil Harvey]

Hi Joyce,

The value for shifting date/time takes 2 arguments:  The date and the time.  The "0" is how much to shift the time.  If only 1 argument is provided, it is interpreted as a time shift.  So to shift the date you need to add the "0".  See the date/time shift documentation for details.

- Phil

[Joyce]

Thank you - I will read.  Also, where do I get a list of the commands to modify the files.  For example: -ModifyDate to use.  I tried typing in listw but this spits out a very long list and I could not figure out how to scroll up the page.  I could hit the space bar to go down but not up.

Thanks,

Joyce

[Phil Harvey]

Hi Joyce,

There are an infinite variety of possible commands, but if you are talking about how to find a list of tags (like ModifyDate), FAQ 2 deals with this question.

- Phil