NAME sat - A simple implementation of at(1), with some incompatibility DESCRIPTION sat is a simple implementation of at(1). But is not fully compatible with at(1). It is used to queue jobs to be executed later, outside the current controlling terminal. sat can also print and edit the list of queued jobs. If you are using autohaltd(8), you should set up hooks for at(1) that pauses autohaltd(8) using SIGSTOP (and resume with SIGCONT) when there are queued jobs. This would prevent autohaltd(8) from shuting down the machine while there are queued jobs but no logins. sat cannot stop autohaltd(8) by adding login entries, because autohaltd(8) will only recognise them if they are in fact true logins. RATIONALE at(1) is far too complex. sat does not do natural language time parsing, it is far too complex, and locale dependent, for all programs to implemeent and should be done in a separate program. sat does not sanitise the environment. You have env(1) for that. Relaying on sat to sanitise the environment appropriately could prove to be a misfortune. sat does not do mailing because that is very restrictive, hooks are used instead. ENVIRONMENY XDG_RUNTIME_DIR This environment variable names the directory in which interprocess communication related files are stored. If unset or empty, /run is used. SEE ALSO at(1), cron(1), sleep-until(1)