note 60212 added to language.operators.execution

After much trouble, I have concluded that the backtick operator (and shell_exec) have a limited buffer for the return. My problem was that I was grepping a file with over 500,000 lines, receiving a response with well over 100,000 lines. After a short pause, I was flooded with errors from grep about the pipe being closed. I have searched, but I cannot find the exact size of the buffer used by the backtick operator and shell_exec. So, to avoid this error, you must limit the output of your commands (such as using -m with grep). Through trial and error, you can get the command to run without error. ---- Manual Page -- http://www.php.net/manual/en/language.operators.execution.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+60212 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+60212&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+60212&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+60212&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+60212&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+60212&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+60212&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+60212&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+60212&report=yes Search -- http://master.php.net/manage/user-notes.php