tutorial - HowTo chang the file modification time

Use touch to change a file’s timestamp without modifying its contents. Give the name of the file to be changed as an argument. The default action is to change the timestamp to the current time.

* To change the timestamp of file `nikesh’ to the current date and time, type:

$ touch nikesh

To specify a timestamp other than the current system time, use the `-d’ option, followed by the date and time that should be used enclosed in quote characters. You can specify just the date, just the time, or both.

* To change the timestamp of file `nikesh’ to `17 May 2006 14:16′, type:

$ touch -d ‘17 May 2006 14:16′ nikesh

* To change the timestamp of file `nikesh’ to `14 May’, type:

$ touch -d ‘14 May’ nikesh

* To change the timestamp of file `nikesh’ to `14:16′, type:

$ touch -d ‘14:16′ nikesh


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source:http://linuxpoison.blogspot.com/2007/11/13578175801881.html