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Full Discussion: Extract line between two patterns
Top Forums Shell Programming and Scripting Extract line between two patterns Post 302738839 by rajamohan on Monday 3rd of December 2012 01:55:22 AM
Old 12-03-2012
Quote:
Originally Posted by Don Cragun
I believe this does what you want:
Code:
awk -F';' '/^COMMAND:/{
        found=1
        if(saved) print saved
}
/^REQUESTSTRING:/{
        if(found) saved = $1
}' input

----------------------------
Oops. I looked too closely at the expected output and missed the part about needing SEARCHPATTERN. The above script happens to work with the sample input, but is not correct in the general case.

What I should have said is something more like:
Code:
awk -F';' '/^COMMAND:/{
        if(fc && fs && saved) print saved
        fc = 1
        saved = ""
        fs = 0
}
/^REQUESTSTRING:/{
        if(fc) saved = $1
}
/SEARCHPATTERN/{
        fs = 1
}
END {   if(fc && fs && saved) print saved}' input

but elixir_sinari's proposal is shorter and should work fine as long as the input file doesn't violate the assumptions made. And, given the sample input, the assumptions look perfectly reasonable to me.
Thanks a lot.. Don Cragun.. its working good..

---------- Post updated at 01:55 AM ---------- Previous update was at 01:53 AM ----------

Quote:
Originally Posted by michaelrozar17
Through Sed..
Code:
 sed -n 'H;/^$/{x;/COMMAND.*SEARCHPATTERN/s/.*\(REQUESTSTRING[^;]*\);.*/\1/p}' inputfile

Thanks a lot michaelrozar17.
Its very simple and working good..
 

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LEARN ABOUT ULTRIX

setregid

setregid(2)							System Calls Manual						       setregid(2)

Name
       setregid - set real and effective group ID

Syntax
       setregid(rgid, egid)
       int rgid, egid;

Description
       The real and effective group ID's of the current process are set to the arguments.

       Supplying a value of -1 for either the real or effective group ID forces the system to substitute the current ID for the -1 parameter.

Environment
       BSD
       If  the	process is superuser, or and matches with the real group ID, the effective group ID, or the saved set-group-id (as described in ),
       then the real, effective, and saved set-group-id are set to and respectively.

       POSIX
       SYSTEM-FIVE
       When your program is compiled in POSIX or SYSTEM-FIVE mode, the following semantics apply when using the function.

       If the process is the superuser, the real, effective, and saved set-group-id (as described in ) are set to and respectively.

       If the process is not the superuser, but the and matches the real group ID, the effective group ID (only in SYSTEM-FIVE	and  BSD  environ-
       ment), or the saved set-group-id, then the effective ID is set to The real group ID and the saved set-group-id are left unchanged.

Return Values
       Upon successful completion, a value of zero (0) is returned.  Otherwise, a value of -1 is returned, and errno is set to indicate the error.

Diagnostics
       [EPERM]	      The  current process is not the superuser and the and specified does not match with the real group ID or the effective group
		      ID (only in SYSTEM-FIVE and BSD environment) or the saved set-group-id.

See Also
       getgid(2), setreuid(2), setgid(3)

																       setregid(2)
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