[SOLVED] touch command inquire.

MODYSAMA · 03-30-2011, 05:38 PM

touch /path/to/destination/*.jpg
Excuse me, Can anyone explain the function of touch here?

TobiSGD · 03-30-2011, 05:40 PM

In this context the touch command will update the access-time of the given files.

MODYSAMA · 03-30-2011, 05:48 PM

Sorry for mu bad,
I can't understand the meaning of update the access-time.
what is meaning by access-time?!

TobiSGD · 03-30-2011, 05:54 PM

The access-time is the time when the file was last accessed, like opened for reading or being changed.

MODYSAMA · 03-30-2011, 05:56 PM

Is that important?!

TobiSGD · 03-30-2011, 06:01 PM

It depends. If you use a backup approach that uses timestamps for determining if a file should be backed up it is important, at least the time of the last change. Or if you want to delete all files in a folder that were not changed in the last two weeks.

MODYSAMA · 03-30-2011, 06:04 PM

Okey I get it. Many thanks for you.

chrism01 · 03-30-2011, 06:42 PM

Actually, just to clarify a bit, atime = last (read) access, mtime = last time of content change, http://linux.die.net/man/1/find. See also ctime.