Whats the error in this script Post: 302203503

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Top Forums Shell Programming and Scripting Whats the error in this script Post 302203503 by era on Monday 9th of June 2008 03:45:16 AM

06-09-2008

Registered User

The problem is with the extra curly braces in the awk script.

Code:

#!/bin/sh
#usblcd clear
while true;
do
    tail -1 /root/Myprogs/apurva.log > /root/Download/usr/bin/output.txt
    echo `awk '{if ($3 == "Connection"&&$4 == "Established") print"Connection Established ";
      else if ($3 == "DTNCO"&&$4 ==" Sent" && $5="Packet") print"Bundle Sent";
      else if ($3 == "Connection" && $4 == "Closed") print"Connection Closed";
      else print"Processing"} ' /root/Download/usr/bin/output.txt`
    sleep 1;
done
# Just replace echo with usblcd and it will be done

I also took out cat, as it didn't seem to have any purpose.

Incidentally, the path name /root/Download/usr/bin looks ... weird. If this is meant to be a temporary file, perhaps you should simply store it in /tmp; or if it is used solely by awk, use a pipeline to awk.

Quote:

Originally Posted by Grzegorz

I would guess that the problem is with the semicolons...
try to remove them.

No, the semicolon is a valid delimiter; it's basically equivalent to a newline.

Last edited by era; 06-09-2008 at 05:23 AM.. Reason: Major edit: previous diagnostic was incorrect

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LEARN ABOUT ULTRIX

gzexe

GZEXE(1)						      General Commands Manual							  GZEXE(1)

NAME

       gzexe - compress executable files in place

SYNOPSIS

       gzexe name ...

DESCRIPTION

       The  gzexe  utility  allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a
       penalty in performance).  For example if you execute ``gzexe /usr/bin/gdb'' it will create the following two files:
	   -rwxr-xr-x  1 root root 1026675 Jun	7 13:53 /usr/bin/gdb
	   -rwxr-xr-x  1 root root 2304524 May 30 13:02 /usr/bin/gdb~
       /usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing executable file.  You can remove /usr/bin/gdb~ once  you  are
       sure that /usr/bin/gdb works properly.

       This utility is most useful on systems with very small disks.

OPTIONS

       -d     Decompress the given executables instead of compressing them.

SEE ALSO

       gzip(1), znew(1), zmore(1), zcmp(1), zforce(1)

CAVEATS

       The  compressed executable is a shell script.  This may create some security holes.  In particular, the compressed executable relies on the
       PATH environment variable to find gzip and some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail).

BUGS

       gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually  in  some  cases,
       using chmod or chown.

																	  GZEXE(1)

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