![]() ![]() It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. ![]() ![]() It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. Thank you for taking the time to report this bug and helping to make Ubuntu better. It is somehow important that user have limited access to parent folder (/ in this example). flock the same file by root - error: Permission denied flock a file by user in that folder - successĤ. add wt permission flags to all in that folderģ. Preventing the check_mk_caching_agent from exiting. On to the agent and inherited by the nohup in the run_cached function The caching agent runs the agent in an flock on fd 200, and this fd is passed (On some systems, this function is emulatedusing fcntl().) Perform the lock operation operation on file descriptor fd (file objects providinga fileno() method are accepted as well). ![]() in your face all of the time is moot: Flock has flocked off and for all its innovation it never quite lived up to its own hype." When Flock's discontinuation was announced in April 2011, reviewer Joey Sneddon of OMG! Ubuntu! offered the analysis: "Whether this was down to poor implementation design wise (one needs only glance at 'Rockmelt' for an example of a social browser done right) or just general apathy towards having alerts from twitter, flickr, facebook, digg et al. In simple terms, flock (file lock) locks the file so only one process can access the file and restricts other processes from utilizing that file to prevent data corruption which usually happens when multiple processes try to utilize a single file. The flock command in Linux manages file locks from the script or the command line ensuring that only one process can access a file at a time to prevent data corruption caused by multiple processes accessing a single file simultaneously. If it does not yet exist on your system, installation should be as simple as a yum install util-linux or apt-get install flock, depending on your Linux Distribution (see: how to find your current Linux Distribution). The example above requires flock to manage those lock files. Also it could be disastrous if I continue to run my projects and it isn't working because I am using the same flock script for querying for free firefox browser ports and if two are using the same one then they will be executing commands across each other on the same port. Since it only happens in my projects occasionally I need to make a test so that I can analyse it in concentration to see if the lock is actually working or not. Increasing the duration between calls such as: */2 * * * * php /path/to/file/fileName1.php just won't due to business constraints. I'd like to use flock to prevent a script from running in the event the previous call hasn't finished.Each script is writing to a different table in the database and I can't start writing to a table until the previous call has completed execution. ![]()
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