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Full Discussion: Reading a string and passing passing arguments to a while loop
Top Forums Shell Programming and Scripting Reading a string and passing passing arguments to a while loop Post 302590176 by goddevil on Saturday 14th of January 2012 01:48:00 PM
Old 01-14-2012
Quote:
Originally Posted by agama
Code:
awk -F : -v last=${STOP:-0} -v first=${START:-0} '
    /^#/ { next; }
    NR >= first && (last == 0  || NR <= last) {
        print $1, $2, $3, $0
    }
 
' input-file | while read f1 f2 f3 i
do
        echo "first field: $f1"
        echo "second field $f2"
        echo "third field $f3"
        echo "whole record (i) $i"
done

Thanks Agama. Having tried the code above, i am getting an EOF error. Can you please explain what the awk is doing and if the format of the code is correct? I am getting the following error
Quote:
unexpected EOF while looking for matching `"'
---------- Post updated at 06:48 PM ---------- Previous update was at 05:36 PM ----------

Hi Agama,

I am unfamiliar with the syntax of the belwo code that you provided. I am getting an error from the code. Can you please let me know if the format of the code is correct? Thanks in advance.

Code:
awk -F : -v last=${STOP:-0} -v first=${START:-0} '
    /^#/ { next; }
    NR >= first && (last == 0  || NR <= last) {
        print $1, $2, $3, $0
    }
 
' input-file | while read f1 f2 f3 i
do

 

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LEARN ABOUT DEBIAN

dtn2adminep

DTN2ADMINEP(1)							  BP executables						    DTN2ADMINEP(1)

NAME

       dtn2adminep - administrative endpoint task for the "dtn" scheme

SYNOPSIS

       dtn2adminep

DESCRIPTION

       dtn2adminep is a background "daemon" task that receives and processes administrative bundles (all custody signals and, nominally, all
       bundle status reports) that are sent to the "dtn"-scheme administrative endpoint on the local ION node, if and only if such an endpoint was
       established by bpadmin.	It is spawned automatically by bpadmin in response to the 's' (START) command that starts operation of Bundle
       Protocol on the local ION node, and it is terminated by bpadmin in response to an 'x' (STOP) command.  dtn2adminep can also be spawned and
       terminated in response to START and STOP commands that pertain specifically to the "dtn" scheme.

       dtn2adminep responds to custody signals as specified in the Bundle Protocol specification, RFC 5050.  It responds to bundle status reports
       by logging ASCII text messages describing the reported activity.

EXIT STATUS

       0   dtn2adminep terminated, for reasons noted in the ion.log file.  If this termination was not commanded, investigate and solve the
	   problem identified in the log file and use bpadmin to restart dtn2adminep.

       1   dtn2adminep was unable to attach to Bundle Protocol operations or was unable to load the "dtn" scheme database, probably because
	   bpadmin has not yet been run.

FILES

       No configuration files are needed.

ENVIRONMENT

       No environment variables apply.

DIAGNOSTICS

       The following diagnostics may be issued to the ion.log log file:

       dtn2adminep can't attach to BP.
	   bpadmin has not yet initialized BP operations.

       dtn2adminep can't load routing database.
	   dtn2admin has not yet initialized the "dtn" scheme.

       dtn2adminep can't get admin EID.
	   dtn2admin has not yet initialized the "dtn" scheme.

       dtn2adminep crashed.
	   An unrecoverable database error was encountered.  dtn2adminep terminates.

BUGS

       Report bugs to <ion-bugs@korgano.eecs.ohiou.edu>

SEE ALSO

       bpadmin(1), dtn2admin(1).

perl v5.14.2							    2012-05-25							    DTN2ADMINEP(1)
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