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Full Discussion: String substitution
Top Forums Shell Programming and Scripting String substitution Post 302246472 by treesloth on Monday 13th of October 2008 06:34:45 PM
Old 10-13-2008
I hope I've understood what you wanted to do. Here's what I did:

1) Created a file called "values". It contains:

Code:
@oneValue@==tcp\:\/\/localhost\:1234
@twoValue@==tcp\:\/\/localhost\:4563
@threeValue@==tcp\:\/\/localhost\:7895

Note the escaped characters. I'm also assuming that you wanted a : before the 7895 on the last line.

2) Created a file called "file.xml". It contains:

Code:
<application name="aTest">
<NameValuePair>
<name>firstName</name>
<value>@oneValue@</value>
</NameValuePair>
<NameValuePair>
<name>secondName</name>
<value>@twoValue@</value>
</NameValuePair>
</application>

Third, used this tcsh foreach script:

Code:
foreach value ( `cat values` )
set val = `echo $value | awk -F"==" '{print $2}'`
set grp = `echo $value | awk -F"==" '{print $1}'`
sed -i .bak "s/$grp/$val/" file.xml
end

Now, since this uses sed -i, I strongly recommend backing up your .xml file before running this. I've never had sed -i fail me, but your mileage may vary drastically.

If your file corresponding to my values file is long and tedious to escape like I did above, you can use this to rewrite it:

Code:
cat values | sed -e 's/\//\\\//g' -e 's/:/\\:/g' >> newvalues

Strictly speaking, it's not necessary to cat the file into sed. Oh, well. Also, the -i can be used here as well, but I tend to err on the side of paranoia where sed -i and other file-overwrite ops are concerned. Lemme know if anything's unclear... my writing can be that way sometimes. :-)
 

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LEARN ABOUT SUSE

tcp-env

tcp-env(1)                                                    General Commands Manual                                                   tcp-env(1)

NAME

       tcp-env - set up TCP-related environment variables

SYNOPSIS

       tcp-env [ -rR ] [ -ttimeout ] program [ arg ...  ]

DESCRIPTION

       The  input  for  tcp-env  must be a TCP connection.  tcp-env finds out information about that connection, puts the information into several
       environment variables as described in tcp-environ(5), and runs program with the given arguments.

       Usually tcp-env is run from inetd.  It might instead be run from another server that already sets up the right  environment  variables;  if
       PROTO  is  set  to  TCP  when  tcp-env  is invoked, tcp-env assumes that all the other variables are set up properly, and it does not check
       whether the input is a TCP connection.

OPTIONS

       -r     (Default.)  Attempt to obtain TCPREMOTEINFO from the remote host.

       -R     Do not attempt to obtain TCPREMOTEINFO from the remote host.

       -ttimeout
              Give up on the TCPREMOTEINFO connection attempt after timeout seconds.  Default: 30.

SEE ALSO

       tcp-environ(5), inetd(8)

                                                                                                                                        tcp-env(1)
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