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Full Discussion: Shell Script Error
Top Forums Shell Programming and Scripting Shell Script Error Post 302578467 by Corona688 on Thursday 1st of December 2011 02:41:50 PM
Old 12-01-2011
Code:
#cat script.sh
#!/bin/sh
echo "Details"
for i in `cat html.txt`
do
  c1=`echo "$i"|awk '{print $1}'`
  c2=`echo "$i"|awk '{print $2}'`
  c3=`echo "$i"|awk '{print $2}'`
  echo "$c1:$c2:$c3"
done
#

That's a dangerous use of backticks, incorrect use of backticks ( because you get splitting on spaces, not lines like you want), useless use of cat, and multiple useless uses of awk. You can do this all in one shell loop with no external commands instead of running awk 9000 individual times to process 3000 individual lines.

Code:
while read c1 c2 c3
do
        echo "${c1}:${c2}:${c3}"
done < html.txt

---------- Post updated at 01:41 PM ---------- Previous update was at 01:40 PM ----------

Quote:
Originally Posted by BeefStu
[code]while read -u9 dataline
do
c1=`echo "$dataline"|awk -F' ' '{print $1}'`
...
If you're using 'while read' anyway, why not let read do the splitting instead of awk?
 

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LEARN ABOUT DEBIAN

amanda-scripts

AMANDA-SCRIPTS(7)						    Miscellanea 						 AMANDA-SCRIPTS(7)

NAME

       amanda-scripts - Configuring and using the Script API

DESCRIPTION

       The Script API is a flexible system for invoking user-supplied scripts at various points in the execution of Amanda. This manual page
       describes the operation and configuration of the API. For help writing Script API scripts, see http://wiki.zmanda.com/index.php/Script_API.

SCRIPTS

       This section lists the scripts included with Amanda, see the individual man page for instructions on using them. For complete How-To
       information, consult the Amanda wiki at http://wiki.zmanda.com.

       o   amzfs-snapshot(8), - create/destroy zfs snapshot.

       o   script-email(8), - send email.

       Script properties work just like application properties: they are insensitive to case, and - (dash) and _ (underscore) may be used
       interchangeably.

SCRIPTS OUTPUT PROPERTY

       A pre-dle-amcheck, pre-dle-estimate or pre-dle-backup executed on the client can output property on stdout that are sent to the
       application. If the output line matches "PROPERTY str1 str2", Amanda sets a property called "str1" by the value of "str2", that property is
       sent to the application.

SEE ALSO

       amanda(8), amanda.conf(5)

       The Amanda Wiki: : http://wiki.zmanda.com/

AUTHORS

       Jean-Louis Martineau <martineau@zmanda.com>
	   Zmanda, Inc. (http://www.zmanda.com)

       Dustin J. Mitchell <dustin@zmanda.com>
	   Zmanda, Inc. (http://www.zmanda.com)

Amanda 3.3.1							    02/21/2012							 AMANDA-SCRIPTS(7)
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