UNIX for Dummies Questions & Answers

# You should be having $filedate with you.

fdate=$(date --date="$filedate" +%Y%m%d%H%M%S)

#! /bin/ksh
# radhika.sh
#set -x
typeset -R4 YEAR=0000
typeset -R2 MON=00
typeset -R2 DAY=00
typeset -R2 HOUR=00
typeset -R2 MIN=00
typeset -R2 SEC=00

[[ $# -eq 0 ]] && echo " Need some arguments " && exit 0

DATE="$@"

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

function gettime
{
HOUR=$(echo $TIME | awk -F: '{ print $1 }')
MIN=$(echo $TIME | awk -F: '{ print $2 }')
SEC=$(echo $TIME | awk -F: '{ print $3 }')
}

for val in $DATE
do
case $val in
[A-Z][a-z]*) mon=$val ;;
[1-2][0-9][0-9][0-9]) YEAR=$val ;;
[0-2]*[0-9]*:[0-5]*[0-9]* ) TIME=$val ;;
[0-2][0-9] ) DAY=$val ;;
*) echo "This will never get printed" ;;
esac
done

getmonth $mon
gettime $TIME

#If no year is provided, get it from date +%Y
[[ $YEAR -eq 0 ]] && YEAR=$(date +%Y)

echo $YEAR$MON$DAY$HOUR$MIN$SEC