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Full Discussion: Access time of a file
Top Forums UNIX for Dummies Questions & Answers Access time of a file Post 302232910 by fpmurphy on Friday 5th of September 2008 01:29:14 PM
Old 09-05-2008
I am aware of some UNIX-like enviroments where st_atime is not updated after a read. Interix i.e. Microsoft SUA is one and I think Cygwin is another.

What happens if you touch the file using the touch(1) utility?
 

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touch(1B)					     SunOS/BSD Compatibility Package Commands						 touch(1B)

NAME
touch - change file access and modification times SYNOPSIS
/usr/ucb/touch [-acfm] file... DESCRIPTION
touch sets the access and modification times of each file to the current time. file is created if it does not already exist. OPTIONS
-a Change the access time of file. Do not change the modification time unless -m is also specified. -c Do not create file if it does not exist. -f Attempt to force the touch in spite of read and write permissions on file. -m Change the modification time of file. Do not change the access time unless -a is also specified. USAGE
See largefile(5) for the description of the behavior of touch when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). EXIT STATUS
The following exit values are returned: 0 touch executed successfully and all requested changes were made. >0 An error occurred. touch returns the number of files for which the times could not be successfully modified. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
touch(1), attributes(5), largefile(5) SunOS 5.10 26 Oct 1995 touch(1B)
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