upsrw(8)

NAME

   upsrw - UPS variable administration tool

SYNOPSIS

   upsrw ups

   upsrw -h

   upsrw -s variable [-u username] [-p password] ups

DESCRIPTION

   upsrw allows you to view and change the read/write variables inside
   your UPS. It sends commands via the server upsd(8) to your driver,
   which configures the hardware for you.

   The list of variables that allow you to change their values is based on
   the capabilities of your UPS equipment. Not all models support this
   feature. Typically, cheaper hardware does not support any of them. Run
   upsrw with a UPS identifier to see what will work for you.

OPTIONS

   -h
       Display the help message.

   -s variable
       Specify the variable to be changed inside the UPS. For unattended
       mode such as in shell scripts, use the format VAR=VALUE to specify
       both the variable and the value, for example:

           -s input.transfer.high=129

       Without this argument, upsrw will just display the list of the
       variables and their possible values.

       Some variables are strings, and can be set to any value within the
       length limit. Others are enumerated types and can only be set to
       one of those values. Others may be within an allowed range of
       values. Refer to the list to know what's available in your
       hardware.

   -u username
       Set the NUT username for the connection to the server. This is
       optional, and you will be prompted for this when using the -s
       option if you don't specify -u on the command line. NUT usernames
       are defined in upsd.users(5), and are not linked to system
       usernames.

   -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
       View or change the settings on this UPS. The format for this option
       is upsname[@hostname[:port]]. The default hostname is "localhost".

UNATTENDED MODE

   If you run this program inside a shell script or similar to set
   variables, you will need to specify all of the information on the
   command line. This means using -s VAR=VALUE, -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.

   Moreover, if you run this program inside a shell script or similar, you
   should only consider using output from stdout, not stderr.

DIAGNOSTICS

   upsrw can't set variables on your UPS 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.

HISTORY

   This program used to be called upsct2, which was ambiguous and
   confusing.

SEE ALSO

   upsd(8), upscmd(8)

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

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