How can I change the date modified/created of a file?

[From]: http://askubuntu.com/questions/62492/how-can-i-change-the-date-modified-created-of-a-file

Easiest way – accessed modified will be the same:

touch -a -m t 201512180130.09 fileName.ext

Where:

-a = accessed
-m = modified
t  = timestamp - use [[CC]YY]MMDDhhmm[.ss] time format

If you wish to use NOW just drop the t and the timestamp

To verify they are all the same: stat fileName.ext

See: touch man

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What does “&” at the end of a linux command mean?

http://stackoverflow.com/questions/13338870/what-does-at-the-end-of-a-linux-command-mean

The & makes the command run in the background.

From man bash:

If a command is terminated by the control operator &, the shell executes the command in the background in a subshell. The shell does not wait for the command to finish, and the return status is 0.

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