Formatting Date (adding a month) - UNIX for Dummies Questions & Answers

devid · #1 01-18-2006

i need to write a script that outputs a file with the following format used for its name BRHYYYYMM.TXT. I have no problems creating this file with the current year and month in the title but i would like the month to be the next period i.e. instead of BRH200601.TXT id like BRH200602.TXT. Im unable to pass parameters into the script as its a registered financials appliction script.

Currently have -

LOCFNAME="BRH`date '+%Y%m'.TXT"

How do i add 1 to the month? i also need to keep it as 2 digits

regards

dave

matrixmadhan · #2 01-18-2006

something better than this should be there,

Code:

# !/usr/bin/ksh

m=`date +%m`
m=$(($m + 1))
if [ $m -lt 10 ]
then
m=0$m
fi

file="BRH`date +%Y`$m.TXT"
echo $file
exit 0

vino · #3 01-18-2006

matrixmadhan, what would happen if the month is Dec ?

Code:

#! /bin/ksh

typeset -Z2 M

M=$(date +%m)
Y=$(date +%Y)
if [ $M == 12 ] ; then 
        M=01
        Y=$(($Y+1))
else
        M=$(($M + 1))
fi;

file="BRH$Y$M.TXT"
echo $file

matrixmadhan · #4 01-18-2006

i should have kept the sentinels in mind ... but didnt

good catch vino,

Code:

# !/usr/bin/ksh

m=`date +%m`
y=`date +%Y`
if [ $m -eq 12 ]
then
 y=$(($y + 1))
 m=0
fi
m=$(($m + 1))
if [ $m -lt 10 ]
then
m=0$m
fi

file="BRH$y$m.TXT"
echo $file
exit 0

devid · #5 01-18-2006

Thanks for the sharp response chaps very much appreciated.

Regards

Dave

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