It doesn't work because shell doens't do that. It doesn't evaluate variables inside variables inside variables inside variables -- and that's mostly a good thing, you could tie yourself in knots with that.
Hi Guys,
I have some basic unix knowlege but new to shell scripting. I want to replace variable values in all files in sub-directories. Any sugestion will be helpful.
Example.
Main Dir: X
Sub Dir: X1, X2, X3, X4, X5, X6.... X10
Each sub directory has file which contains variable A = 10. ... (3 Replies)
Currently I am using the tr command in 3 scenarios for a ksh script.
1) Replacing any spaces in the file with a ~
tr ' ' '~' <$orignalFile> $newFile
2) After certain processing is done at the end of the scirpt i convert the Tilde back to spaces
tr ' ' '~' <$newFile> $newFile2
3) Last... (4 Replies)
I generally save a lot of web pages for reading offline which works out great for school. Now I have to spend a lot of time on the bus and I am looking for the best way to read some of these webpages using my Nokia 7610.
I have uploaded the files to my phone, but they are deadly deadly slow to... (2 Replies)
Hi there, I'm quite new to the forum and shell scripting.
I want to filter out the "166.0 points". The results, that i found in google / the forum search didn't helped me :(
<a href="/user/test" class="headitem menu" style="color:rgb(83,186,224);">test</a><a href="/points" class="headitem... (1 Reply)
I tried to find elegant (or at least simple) way to remove all but couple of html tags from html file, but all examples I found dealt with removing all the tags.
The logic of the script would be:
- if there is <li> or <ul> on the line, do nothing (=write same line to output)
- if there is:... (0 Replies)
Hi,
This is a part of my code:
case "$1" in
home)
echo '<h2> Select a student: </h2>'
echo '<br>'
for stunum in $(ls ./)
do
echo "<a href=edit?numeric_stu=$stunum>`sed -n 1p ./$stunum/info`</a>"
echo '<br>'
done
edit)... (1 Reply)
Ok, so this is stupid simple, and I know I am going to feel like an idiot when I get help.
I am altering a HTML report that has contraband in it so that the links to said contraband and the images are not shown.
The link/img pairs are in the form of :
<a... (5 Replies)
Hi,
I want to replace a chain of if-else statement in an old AWK file with values from Db2 table or CSV file. The part of code is below...
if (start_new_rec=="true"){
exclude_user="false";
user=toupper($6);
match(user, "XXXXX.");
if (RSTART ==2 ) {
... (9 Replies)
Hi,
I have a txt file which contain this:
<a href="linux">Linux</a>
<a href="unix">Unix</a>
<a href="oracle">Oracle</a>
<a href="perl">Perl</a>
I'm trying to extract the text in between these anchor tag and ignoring everything else using grep. I managed to ignore the tags but unable to... (6 Replies)
Hello All,
I am having the file as below .I need to replace column 9-12 with some other values. In the below file I need to replace 1509 to 1508 and 1508 to 1507 .Can you please help me in how to do that
Thanks,
Arun
... (10 Replies)
Discussion started by: arunkumar_mca
10 Replies
LEARN ABOUT X11R4
upsrw
UPSRW(8) NUT Manual 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.
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/
Network UPS Tools 05/24/2012 UPSRW(8)