Execute Command Without Waiting For It To Finish

If you just execute a terminal command using exec or system in PHP, the page will only load completely until the command has been finished. If you are running commands to run a websocket server, the page will not load, because the start server command won’t terminate. So to avoid this problem you should just do a simple trick, Just add  /dev/null & after the command you’re running. Here is a quick example :

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How to make a file executable in Ubuntu Linux

Executable files are files that can be used to run a program or to do a specific purpose specified in the file. Normally not all files defaultly would be executable in Linux because of security reasons. If all files are defaultly executable then the scripts can do whatever the hell they want to do in your computer. As we call them VIRUSES. This is one of the main reasons why you should use Linux.

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