PHP Passthru Mastery Overcoming Execution Roadblocks

Hey LQ, For some reason I can't seem to get exec, passthru or system to run a specific command. It will run trivial commands such as “ls -l” ... i have plesk installed on this server. the code within my dump.php in question is as follow. exec("mysqldump -u$dUser -p$dPass $database ... , passthru() not working (possible permissions issue), PHP command not executed system(), Reference - What does this symbol mean in PHP?, shell_exec, system ... The problem is that you use exec instead of shell_exec the point is that environement of exec don't know about any FFmpeg executable, ... I was using an exec-based line of code to create thumbnails from PDF files on other sites not in Cloud, which works great. I was forced to ... If you need more output to diagnose your error, use the passthru() or exec() functions instead, where an array will returned with all output of ... This gist shows a problem I have with PHP's passthru() and exec() functions. I have a shell script called daemon that starts a background daemon. I need this exact information to be passed on to the browser / PHP script without any intervention. I am aware about the passthru function which ... I'll face 'font is not found' problem. Because everything is OK, I think the problem is with fonts permissions or ownership. I tried to change ... I have php 7 installed on ubantu 16 .i have also installed imagemagick. now my php file say index.php with code below echo exec("whoami");