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.TH UPSRW 8 "Sat May 10 2003" "" "Network UPS Tools (NUT)"
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upsrw \- UPS variable administration tool
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.B upsrw -s \fIvariable\fB [-u \fIusername\fB] [-p \fIpassword\fB]
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allows you to view and change the read/write variables inside your UPS.
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It sends commands via the server \fBupsd\fR(8) to your driver, which
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configures the hardware for you.
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The list of variables that allow you to change their values is based on
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the capabilities of your UPS equipment. Not all models support this
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feature. Typically, cheaper hardware does not support any of them.
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Run upsrw with a UPS identifier to see what will work for you.
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Display the help message.
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.IP "-s \fIvariable\fR"
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Specify the variable to be changed inside the UPS. For unattended
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mode such as in shell scripts, use the format VAR=VALUE to specify both
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the variable and the value, for example:
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-s input.transfer.high=129
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Without this argument, upsrw will just display the list of the variables
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and their possible values.
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Some variables are strings, and can be set to any value within the
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length limit. Others are enumerated types and can only be set to one of
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those values. Refer to the list to know what's available in your
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.IP "-u \fIusername\fR"
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Set the username for the connection to the server. This is optional,
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and you will be prompted for this when using the -s option if you don't
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specify -u on the command line.
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.IP "-p \fIpassword\fR"
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Set the password to authenticate to the server. This is also optional
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like -u, and you will be prompted for it if necessary.
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View or change the settings on this UPS. The format for this option is
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upsname@hostname[:port].
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If you run this program inside a shell script or similar to set
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variables, you will need to specify all of the information on the
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command line. This means using -s VAR=VALUE, -u and -p. Otherwise it
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will put up a prompt and your program will hang.
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This is not necessary when displaying the list, as the username and
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password are not required for read-only mode.
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upsrw can't set variables on your UPS unless you provide a valid
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username and password. If you get "access denied" errors, make sure
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that your \fBupsd.users\fR(5) has an entry for you, and that the
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username you are using has permissions to SET variables.
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This program used to be called upsct2, which was ambiguous and
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\fBupsd\fR(8), \fBupscmd\fR(8)
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.SS Internet resources:
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The NUT (Network UPS Tools) home page: http://www.networkupstools.org/
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man/upsrw.8
