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Full Discussion: extract string from varying delimiter line
Top Forums Shell Programming and Scripting extract string from varying delimiter line Post 302342759 by rebelbuttmunch on Monday 10th of August 2009 05:00:31 PM
Old 08-10-2009
extract string from varying delimiter line
Hi

I have lines like this

a=1, b=2, c=3,
a=1, d=4, e=5, b=225,

I need to extract the b=nnn... value. I dont know how many other entries will be before and after it in each line. Ive tried a basic line like
awk '/b=/, $NF ~ /,/ ' myfile.txt
but I think that it doesnt care which comma it picks.

I to begin the selection with b= and end it with the NEXT comma after b=

Any ideas?
Thanks.
 

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LEARN ABOUT DEBIAN

iceauth

ICEAUTH(1)						      General Commands Manual							ICEAUTH(1)

NAME

       iceauth - ICE authority file utility

SYNOPSIS

       iceauth [ -f authfile ] [ -vqib ] [ command arg ... ]

DESCRIPTION

       The iceauth program is used to edit and display the authorization information used in connecting with ICE.  This program is usually used to
       extract authorization records from one machine and merge them in on another (as is the case when using remote logins or granting access	to
       other users).  Commands (described below) may be entered interactively, on the iceauth command line, or in scripts.

OPTIONS

       -f authfile  Name of the authority file to use. Will default to
		    the file currently in use by the session.

       -v	    Turns on extra messages (verbose mode)

       -q	    Turns off extra messages (quiet mode)

       -i	    Ignore the locks on the authority file

       -b	    Break the locks on the authority file

       -u	    Print basic usage instructions

USAGE

       When iceauth is run it will allow the following set of commands to be entered interactively or in scripts.

       ?

       List available commands.

       help

       Print help information. You may supply a command name to help to get specific information about it.

       info

       Print information about the entries in the authority file.

       list

       List (print) entries in the authority file. You may specify optional modifiers as below to specify which entries are listed.

       list [ protocol_name ] [ protocol_data ] [ netid ] [ authname ]

       add

       Add an entry to the authority file. This must be in the format

       add protocol_name protocol_data netid authname authdata

       remove

       Remove entries from the authority file.

       remove [ protocol_name ] [ protocol_data ] [ netid ] [ authname ]

       extract

       Extract	entries  from  the  authority file in to a destination file. You must supply the path to the destination to this command as in the
       following format. Optional specifiers allow you to narrow which entries are extracted.

       extract filename [ protocol_name ] [ protocol_data ] [ netid ] [ authname ]

       merge

       Merge entries from other files in to the authority file selected by the program. You may supply any number of file paths to this command as
       follows:

       merge filename1 [ filename2 ] [ filename3 ] ...

       exit

       Save changes and exit the program.

       quit

       Abort changes and exit the program without saving.

       source

       Read and execute commands from a file.

       source filename

AUTHOR

       Ralph Mor, X Consortium

X Version 11							   iceauth 1.0.5							ICEAUTH(1)
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