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Top Forums Shell Programming and Scripting Detecting new entries in log files Post 302841183 by konsolebox on Wednesday 7th of August 2013 05:21:48 AM
Old 08-07-2013
Use stat to get the modification timestamp of the file and store it on a variable. Compare it later to check changes. Of course the filesystem should be consistent with updates. Some filesystem may have no modification timestamp? I don't know. Perhaps.
 

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HTTP_CACHE_LAST_MODIFIED(3)						 1					       HTTP_CACHE_LAST_MODIFIED(3)

http_cache_last_modified - Caching by last modification

SYNOPSIS
bool http_cache_last_modified ([int $timestamp_or_expires]) DESCRIPTION
Attempts to cache the sent entity by its last modification date. If the supplied argument is greater than 0, it is handled as timestamp and will be sent as date of last modification. If it is 0 or omit- ted, the current time will be sent as Last-Modified date. If it's negative, it is handled as expiration time in seconds, which means that if the requested last modification date is not between the calculated timespan, the Last-Modified header is updated and the actual body will be sent. A log entry will be written to the cache log if the INI settinghttp.log.cache is set and the cache attempt was successful. Note This function may be used in conjunction with http_send_data(3), http_send_file(3) and http_send_stream(3). PARAMETERS
o $timestamp_or_expires - Unix timestamp RETURN VALUES
Returns FALSE or exits on success with 304 Not Modified if the entity is cached. See the INI settinghttp.force_exit for what "exits" means. EXAMPLES
Example #1 A http_cache_last_modified(3) example Caching for 5 seconds. <?php http_cache_last_modified(-5); printf("%s ", http_date()); ?> SEE ALSO
http_cache_etag(3), the HttpResponse class if you are using PHP 5.1.0 and above. PHP Documentation Group HTTP_CACHE_LAST_MODIFIED(3)
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