If you’ve never used the lsof command or used it only for one specific purpose, you might be delighted to learn how many ways the lsof (list open files) command can help you manage your servers. lsof is the Unix/Linux command that allows you to list open files or identify the processes that particular files have open. Handy for evaluating system security as well as troubleshooting, lsof features a large range of options that allow it to be used in numerous ways – sometimes even surpassing the ps command for looking at processes and the netstat command for examining network interfaces.

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