Can anyone let me know how to convert the date argument value YYYYMMDD(i.e. For ex- 20171010) to the date format 'DD-MON-YYYY'(i.e. 10-OCT-2017). Also i need to validate the date which user specifies as argument while executing the script.
Note: File System will only supports AIX commands. I have got suggestion like below which doesn't supported by AIX File system.
Refer the page - https://www.unix.com/shell-programming-and-scripting/173248-converting-date-yyyymmdd-dd-mon-yyyy.html
https://www.unix.com/shell-programming-and-scripting/58675-change-date-dd-mmm-yyyy-mm-dd-yyyy.html
date -f date -j date -d
St_dt="$2"
St_D="${St_dt#??????}"
tmp="${St_dt%??}"
St_M="${tmp#????}"
if [ $St_M -le 0 -o $St_M -gt 12 ];
then
echo "$St_M is invalid month."
exit 1
fi
St_Y="${tmp%??}"
case "$St_M" in
01) St_M=JAN ;;
02) St_M=FEB ;;
03) St_M=MAR ;;
04) St_M=APR ;;
05) St_M=MAY ;;
06) St_M=JUN ;;
07) St_M=JUL ;;
08) St_M=AUG ;;
09) St_M=SEP ;;
10) St_M=OCT ;;
11) St_M=NOV ;;
12) St_M=DEC ;;
esac
Start_dt="${St_D}-${St_M}-${St_Y}"
echo "$Start_dt"