UNIX validate date
Validates a date in YYYYMMDD format # EOM_DATE debug echo “$(now): Validating EOM_DATE: $EOM_DATE” CHK_YEAR=${EOM_DATE:0:4} CHK_MON=${EOM_DATE:4:2} CHK_DAY=${EOM_DATE:6:2} debug echo “$(now): CHK_YEAR: $CHK_YEAR” debug echo “$(now): CHK_MON: $CHK_MON” debug echo “$(now): CHK_DAY: $CHK_DAY” cal $CHK_MON $CHK_YEAR 2> /dev/null | grep -q …