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Full Discussion: Korn shell and awk question
Top Forums Shell Programming and Scripting Korn shell and awk question Post 302142504 by mastachef on Friday 26th of October 2007 03:35:46 PM
Old 10-26-2007
Korn shell and awk question
I am modifying a Korn shell script in using the Exceed (Solaris 10 environment). My task is to read in a .txt file with dates arranged like this (01-Sep-2006). I am to read each line and take the dates, compare them to a benchmark date and depending on if it is older than the date or the date and newer, produce a result. The problem is that when the first date is read, the condition for the first date follows for the rest of the dates. This is not what I want. I want to have each date tested and produce a different result. Here is what I have:

Code:

#!/bin/ksh
#set -x

#NOW, WE OPEN THE TEXT FILE
exec 3<week_ending_dates1.txt		

while read -u3 LINE 
do			
	day=$(echo $LINE | cut -d'-' -f1)
	month=$(echo $LINE | cut -d'-' -f2)
	year=$(echo $LINE | cut -d'-' -f3)

case $month in
Jan*)
	month=01
	;;
Feb*)
	month=02
	;;
Mar*)
	month=03
	;;
Apr*)
	month=04
	;;
May*)
	month=05
	;;
Jun*)
	month=06
	;;
Jul*)
	month=07
	;;
Aug*)
	month=08
	;;
Sep*)
	month=09
	;;
Oct*)
	month=10
	;;
Nov*)
	month=11
	;;
Dec*)
	month=12
	;;	
esac

# THE DATE IS NOW PUT BACK TOGETHER TO BE COMPARED TO THE BENCHMARK
testdate=$year$month$day  
branchdate="20070814"

if [[ $testdate -lt $branchdate ]]; then
	
more week_ending_dates1.txt | grep Month | awk '{ print "time "$1 \n test1" > "file_"$1}'		
		
else 

more week_ending_dates1.txt | grep Month | awk '{ print "time "$1 \n test2" > "file_"$1}'
		
fi

done	
exec 3<&-

 

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LEARN ABOUT MOJAVE

dp

DP(8)                                                                [nmh-1.5]                                                               DP(8)

NAME

       dp - parse dates 822-style

SYNOPSIS

       /usr/lib/mh/dp [-form formatfile] [-format string] [-width columns] [-version] [-help] dates ...

DESCRIPTION

       Dp  is  a  program that parses dates according to the ARPA Internet standard.  It also understands many non-standard formats, such as those
       produced by TOPS-20 sites and some UNIX sites using ctime(3).  It is useful for seeing how nmh will interpret a date.

       The dp program treats each argument as a single date, and prints the date out in the official 822-format.  Hence, it  is  usually  best  to
       enclose each argument in quotes for the shell.

       To  override  the  output  format  used by dp, the -format string or -format file switches are used.  This permits individual fields of the
       address to be extracted with ease.  The string is simply a format string and the file is simply a format file.  See  mh-format(5)  for  the
       details.

       Here is the default format string used by dp:

            %<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>

       which  says  that  if an error was detected, print the error, a `:', and the date in error.  Otherwise, output the 822-proper format of the
       date.

FILES

       $HOME/.mh_profile          The user profile

PROFILE COMPONENTS

       None

SEE ALSO

       ap(8), Standard for the Format of ARPA Internet Text Messages (RFC-822)

DEFAULTS

       `-format' default as described above
       `-width' default to the width of the terminal

CONTEXT

       None

BUGS

       The argument to the -format switch must be interpreted as a single token by the shell that invokes dp.  Therefore, one must  usually  place
       the argument to this switch inside quotes.

MH.6.8                                                             11 June 2012                                                              DP(8)
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