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Full Discussion: comment/delete a particular pattern starting from second line of the matching pattern
Top Forums Shell Programming and Scripting comment/delete a particular pattern starting from second line of the matching pattern Post 302246150 by imas on Monday 13th of October 2008 02:37:21 AM
Old 10-13-2008
Hi Summer_Cherry,

Million thanks for giving me the piece of code which will comment starting from second occurance of matched pattern from the starting of line.

intelsol2>cat 1.txt
0152364|134444|10.20.30.40|015236433
0233654|122555|10.20.30.50|023365433
intelsol2>cat 2.txt
0152364|134444|10.20.30.40|015236433
0233654|122555|10.20.30.50|023365433
0789456|332211|10.20.30.40|078945633
1234567|225522|10.20.30.50|123456733
0321654|999999|10.20.30.40|032165433
0456123|777899|10.20.30.40|045612333
intelsol2>
nawk 'BEGIN{FS="|"}
{
if (NR==FNR)
a[$3]=0
else
{
a[$3]++
if (a[$3]>=2)
print "#"$0
else
print $0
}
}' 1.txt 2.txt >3.txt
intelsol2>cat 3.txt
0152364|134444|10.20.30.40|015236433
0233654|122555|10.20.30.50|023365433
#0789456|332211|10.20.30.40|078945633
#1234567|225522|10.20.30.50|123456733
#0321654|999999|10.20.30.40|032165433
#0456123|777899|10.20.30.40|045612333
intelsol2>

Also thanks a lot for unix forum guys "you ppl rock!!!"

FYI, i was trying to search for this code since all the weekend and went through sed manual "http://www.grymoire.com/Unix/Sed.html" sub topic (/1, /2, etc. Specifying which occurrence) however was unlucky in trying all the trial and error method.

Also Summer could you please explain me the code you have written so that i can understand it in a better way.

Again thanks a lot and you can close this thread.

Thanks
-imas
 

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LEARN ABOUT OPENSOLARIS

gvfs-cat

gvfs-cat(1)							   User Commands						       gvfs-cat(1)

NAME

       gvfs-cat - print a file to standard output using the VFS system

SYNOPSIS

       gvfs-cat URI

DESCRIPTION

       gvfs-cat prints a file to standard output using the virtual file system to access the file via a URI.

OPERANDS

       The following operands are supported:

       URI	Specifies the file location in standard URI format.

EXAMPLES

       Example 1: Cat a File From a Web Server

       example% gvfs-cat http://www.sun.com

       Example 2: Cat a Local File

       example% gvfs-cat file:///home/user/README.txt

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables: NLSPATH.

EXIT STATUS

       The exit value 0 is returned regardless of success or failure.

FILES

       The following files are used by this application:

       /usr/bin/gvfs-cat       Executable to print a file to standard output using the VFS system

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-gvfs		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gvfs-copy(1), gvfs-info(1), gvfs-less(1), gvfs-ls(1), gvfs-mkdir(1) gvfs-monitor-dir(1), gvfs-monitor-file(1), gvfs-mount(1), gvfs-move(1),
       gvfs-rename(1), gvfs-open(1), gvfs-rm(1), gvfs-save(1), gvfs-trash(1), gvfs-tree(1), attributes(5), environ(5)

NOTES

       Written by Alvaro Lopez Ortega, Sun Microsystems Inc., 2008.

SunOS 5.11							    25 Mar 2008 						       gvfs-cat(1)
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