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Top Forums Shell Programming and Scripting wish to use shell variable in xml file, is it possible? Post 302654401 by crimso on Monday 11th of June 2012 08:06:17 PM
Old 06-11-2012
for the benefit of clarification, i have a bunch of execution nodes that are running rhel 5.4 and the sftwr is a cfd solver. the executable/daemon needs to be running when the solver kicks off as this executable manages the mysqld processes, one for each core/cpu. sort of a quasi mpi scenario. the config file that is parsed by the executable/daemon requires a valid user id as omitting it generates an error. the executable/daemon also needs to be running as the user running the solver. the head node of the cluster launches a wrapper script for the solver on behalf of the user on the execution node(s). this sftwr was clearly not designed to do this but in our environment it's up to me to find a 'one shoe fits all' way of doing it. i may very well move the original config files aside and link them to files with open permissions and go with methyl's suggestion. as always, thanx for chiming in! joe.
 

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IPTABLES-XML(8) 														   IPTABLES-XML(8)

NAME
iptables-xml -- Convert iptables-save format to XML SYNOPSIS
iptables-xml [-c] [-v] DESCRIPTION
iptables-xml is used to convert the output of iptables-save into an easily manipulatable XML format to STDOUT. Use I/O-redirection pro- vided by your shell to write to a file. -c, --combine combine consecutive rules with the same matches but different targets. iptables does not currently support more than one target per match, so this simulates that by collecting the targets from consecutive iptables rules into one action tag, but only when the rule matches are identical. Terminating actions like RETURN, DROP, ACCEPT and QUEUE are not combined with subsequent targets. -v, --verbose Output xml comments containing the iptables line from which the XML is derived iptables-xml does a mechanistic conversion to a very expressive xml format; the only semantic considerations are for -g and -j targets in order to discriminate between <call> <goto> and <nane-of-target> as it helps xml processing scripts if they can tell the difference between a target like SNAT and another chain. Some sample output is: <iptables-rules> <table name="mangle"> <chain name="PREROUTING" policy="ACCEPT" packet-count="63436" byte-count="7137573"> <rule> <conditions> <match> <p>tcp</p> </match> <tcp> <sport>8443</sport> </tcp> </conditions> <actions> <call> <check_ip/> </call> <ACCEPT/> </actions> </rule> </chain> </table> </iptables-rules> Conversion from XML to iptables-save format may be done using the iptables.xslt script and xsltproc, or a custom program using libxsltproc or similar; in this fashion: xsltproc iptables.xslt my-iptables.xml | iptables-restore BUGS
None known as of iptables-1.3.7 release AUTHOR
Sam Liddicott <azez@ufomechanic.net> SEE ALSO
iptables-save(8), iptables-restore(8), iptables(8) Jul 16, 2007 IPTABLES-XML(8)
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