하루전 날짜 가져오기

MON=`date +%m`
DAY=`date +%d`
YEAR=`date +%Y`

if [[ "$MON" = "01" ]] && [[ "$DAY" = "01" ]] then
MON=12
(( YEAR=$YEAR - 1 ))
DAY=`cal $MON $YEAR |tail +3 |wc -w`
elif [[ "DAY" -eq 01 ]] && [[ "$MON" -ne 01 ]] then
(( MON=$MON - 1 ))
DAY=`cal $MON $YEAR |tail +3 |wc -w`
else
(( DAY=$DAY - 1 ))
fi

if [[ $DAY -lt 10 ]] then
DAY=0$DAY
fi

if [[ $MON -lt 10 ]] then
MON=0$MON
fi

WORK_DATE=$YEAR$MON$DAY


1부터 10까지 출력

#!/bin/sh
  i=1
  while [ $i -lt 10 ]
  do
    i=`expr $i + 1`
    echo $i
  done











 

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