One that has come in handy a few times: When a machine is so starved for resources that it can't even allocate a pts for you, but you want to run some forensics

One that has come in handy a few times: When a machine is so starved for resources that it can't even allocate a pts for you, but you want to run some forensics, use `-T`: $ ssh -T user@host <command> Even if you're plumb out of file descriptors for example, you can run... $ ssh -T user@host lsof ...or whatever, and get your command output dumped to the screen, even if you don't get the niceties of a terminal.