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Top Forums Shell Programming and Scripting Picking the file based on Date..Requirement Post 302120373 by vish_indian on Wednesday 6th of June 2007 05:17:31 AM
Old 06-06-2007
If you have got GNU date and awk/gawk,

then you can get a backdate with the following command

Code:
 var=`date +%s`
awk -v var=${var} -v bdays=2 'BEGIN{print strftime("%d-%m-%Y",var-(86400*bdays))}'

output is 04-06-2007

To get 31 days back date

awk -v var=${var} -v bdays=31 'BEGIN{print strftime("%d-%m-%Y",var-(86400*bdays))}'

Not sure if strftime function is available in Solaris, if it is then this should work on solaris with nawk.
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). Free Software Foundation Nov 3 1999 IGAWK(1)
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