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Top Forums UNIX for Dummies Questions & Answers fuser Post 302498481 by rbatte1 on Monday 21st of February 2011 12:51:16 PM
Old 02-21-2011
Getting back to our thread orginator's query:-
Quote:
Originally Posted by tjmannonline
fuser -f worked, but now i ran into another issue. my script:

fuser -f file1 > /tmp/active.log

if [ -s /tmp/active.log ] && [ -s /tmp/file2 ]
then
echo "exiting"
exit
else
mv /tmp/file2 /tmp/file2.timestamp
fi

since this crontab runs * * * * *, mv /tmp/file2 /tmp/file2.timestamp "A file or directory in the path name does not exist".
...I think that you have moved on from fuser into file testing logic. What you have coded says:
  1. Capture PIDs into /tmp/active.log
  2. If /tmp/active.log exists and is empty AND /tmp/file2 exists and is empty, then write a message and exit, otherwise rename /tmp/file2 to /tmp/file2.timestamp
Moving on, you are renaming /tmp/file2 to /tmp/file2.timestamp every minute too. This may cause conflict just on the bad luck of timing anyway, but what you are seeing is that you fail the condition when /tmp/file2 does not exist. You then try to continue in the else clause and rename a file that does not exist, hence the error being displayed.

If you can describe the logic you are trying to write into your code, someone may be able to help you get the various tests and flow correct.




Robin
Liverpool/Blackburn
UK
 

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FILEATIME(3)								 1							      FILEATIME(3)

fileatime - Gets last access time of file

SYNOPSIS
int fileatime (string $filename) DESCRIPTION
Gets the last access time of the given file. PARAMETERS
o $filename - Path to the file. RETURN VALUES
Returns the time the file was last accessed, or FALSE on failure. The time is returned as a Unix timestamp. EXAMPLES
Example #1 fileatime(3) example <?php // outputs e.g. somefile.txt was last accessed: December 29 2002 22:16:23. $filename = 'somefile.txt'; if (file_exists($filename)) { echo "$filename was last accessed: " . date("F d Y H:i:s.", fileatime($filename)); } ?> ERRORS
/EXCEPTIONS Upon failure, an E_WARNING is emitted. NOTES
Note The atime of a file is supposed to change whenever the data blocks of a file are being read. This can be costly performance-wise when an application regularly accesses a very large number of files or directories. Some Unix filesystems can be mounted with atime updates disabled to increase the performance of such applications; USENET news spools are a common example. On such filesystems this function will be useless. Note Note that time resolution may differ from one file system to another. Note The results of this function are cached. See clearstatcache(3) for more details. Tip As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to "Supported Protocols and Wrappers" to determine which wrappers support stat(3) family of functionality. SEE ALSO
filemtime(3), fileinode(3), date(3). PHP Documentation Group FILEATIME(3)
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