Tenth Command: Do Nothing

You can’t hurt anything if you don’t touch it. If you’re unsure of what a command will do, read more about it first, don’t type it and hope for the best. If you’re tired and you’re removing files, wait until you’re more rested. If something isn’t broken, don’t fix it. If your site is running beautifully, don’t tweak it. If you’re trying something new, back your files up first.

Unless you’re a SysAdmin and need to maintain a system, in which case you don’t need this advice anyway, you can’t hurt yourself in Unix unless you do something, so if all else fails, Do Nothing.

The easiest mistake to recover from in Unix is the one that’s not made.