UPSCMD(8)                         NUT Manual                         UPSCMD(8)



NAME
       upscmd - UPS administration program for instant commands

SYNOPSIS
       upscmd -h

       upscmd -l ups

       upscmd [-u username] [-p password] ups command

DESCRIPTION
       upscmd allows you to invoke "instant commands" in your UPS hardware.
       Not all hardware supports this, so check the list with -l to see if
       anything will work on your equipment.

       On hardware that supports it, you can use this program to start and
       stop battery tests, invoke a front panel test (beep!), turn the load on
       or off, and more.

OPTIONS
       -h
           Display the help message.

       -l ups
           Show the list of supported instant commands on that UPS. Some
           hardware may not support any of them.

       -u username
           Set the username for the connection to the server. This is
           optional, and you will be prompted for this when invoking a command
           if -u is not used.

       -p password
           Set the password to authenticate to the server. This is also
           optional like -u, and you will be prompted for it if necessary.

       ups
           Connect to this UPS. The format is upsname[@hostname[:port]]. The
           default hostname is "localhost".

UNATTENDED MODE
       If you run this program inside a shell script or similar to invoke a
       command, you will need to specify all of the information on the command
       line. This means using -u and -p. Otherwise it will put up a prompt and
       your program will hang.

       This is not necessary when displaying the list, as the username and
       password are not required for read-only mode.

DANGEROUS COMMANDS
       Some drivers like apcsmart(8) have built-in paranoia for the dangerous
       commands like load.off. To make them actually turn off the load, you
       will have to send the command twice within a short window. That is, you
       will have to send it once, then send it again after 3 seconds elapse
       but before 15 seconds pass.

       This paranoia is entirely defined within the driver. upsd and upscmd
       have no control over the timing.

DIAGNOSTICS
       upscmd won't work unless you provide a valid username and password. If
       you get "access denied" errors, make sure that your upsd.users(5) has
       an entry for you, and that the username you are using has permissions
       to SET variables.

BUGS
       There is currently no way to tell the user when the driver requires
       confirmation to invoke a command such as load.off. Similarly, there is
       not yet a way to tell the user if a command succeeds or fails.

       This is on the list of things to fix in the future, so don't despair.
       It involves magic cookies.

SEE ALSO
       upsd(8), upsrw(8)

INTERNET RESOURCES
       The NUT (Network UPS Tools) home page: http://www.networkupstools.org/



Network UPS Tools                 10/09/2011                         UPSCMD(8)
