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Full Discussion: Parsing a control file loop
Top Forums Shell Programming and Scripting Parsing a control file loop Post 303017318 by The Gamemaster on Monday 14th of May 2018 05:05:02 AM
Old 05-14-2018
Quote:
Originally Posted by RudiC
Enclose the $line in double quote to have the shell preserve spaces within.

But, I may be thick-witted, but the entire problem escapes me, even with the new sample.
OK, you have the OS - however determined - in the first field. What is the second field for? And, why not just list the commands to be executed in a list right after the OS paragraph header?

Please give some consistent context / background to help people understand what you're after. The HP-UX problem from post#1 seems to have disappeared in the new sample?
The script is for modifying a specific configuration file (ps_mon.cfg) on different servers. The 2nd field is there, so that the script will search for that keyword first in the config file, and if there's an *ACTION already added in the next line after that keyword, will not proceed on executing the command in the 3rd field. Otherwise, the script will execute the command to insert that *ACTION line after the keyword. Obviously, I have those sorted in, though I'm open to suggestions if you have simpler code since I'm a clunky coder.

Once the script got the OS of the server it will execute on, for example RHEL, how can I get only the lines with RHEL, then assign the second field to $PROCESS and the third field to $COMMAND in a loop, so that I can accomplish the above?
 

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LEARN ABOUT DEBIAN

nngrab

NNGRAB(1)						      General Commands Manual							 NNGRAB(1)

NAME

       nngrab - news retrieval by keyword (nn)

SYNOPSIS

       nngrab [ -c ] keyword

DESCRIPTION

       nngrab  invokes	nn on all USENET articles whose subject (or keyword) field(s) contain an instance of keyword.  nngrab is a fast equivalent
       for:
	    nn -mxX -s/keyword all

       For example,
	    nngrab tesla
       will retrieve items concerning Nikola Tesla.

       Keyword case is ignored unless -c is specified, and the keyword can be a regular expressions (escaped to avoid conflicts with  the  shell).
       For example,
	    nngrab "n.*tesla"

       The range of search includes all newsgroups on the system, including ones which are unsubscribed.

FILES

       $db/subjects   subject database

SEE ALSO

       nn(1), nnspew(8), egrep(1)

NOTES

       nngrab  can be much faster than the equivalent command shown above, if the tertiary news subject database generated by the nnspew(8) daemon
       exists.	To enable the faster operation, nnspew must be executed regularly by cron.

       nngrab uses egrep(1) to scan the subject database, so if you are not running fast egrep (GNU-style) this is all for naught.

       nngrab will use a subject database generated by nnspew independent of its age.  Thus, if you stop running nnspew, remember  to  remove  the
       subjects file as well.

BUGS

       Under version 6.4 onwards, search of the "Keywords:" field is not supported.
       Search on name is not possible either.

AUTHOR

       James A. Woods, NASA Ames Research Center
       E-mail: jaw@ames.arc.nasa.gov

4th Berkeley Distribution					    Release 6.6 							 NNGRAB(1)
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