![while 循环的问题](https://linux22.com/image/562462/while%20%E5%BE%AA%E7%8E%AF%E7%9A%84%E9%97%AE%E9%A2%98.png)
这是我写的脚本,但似乎有问题!我想打印日志文件的最后 X 天!这里我假设 X 是 5,以便稍后生成它!请帮忙!
for d in \
$(sed -nre 's/.*\[(..)\/(...)\/(....):(..:..:..) .*/\1 \2 \3 \4/p' thttpd.log | date `+%s -f-);`
do echo $d >s1; done
time=$(expr 60 \* 60 \* 24 \* 5)
EDATE=`tail -1 s1`
SDATE=$[$EDATE - $time]
time=$(expr 60 \* 60 \* 24 \* 5)
EDATE=`tail -1 s1`
SDATE=$[$EDATE - $time]
k=`tail -1 s1`
echo $k
echo $SDATE
while [$k -ne $SDATE](k and SDATE contain numbers)
do
k=`tail -1 s1`
sed '1d' < s1 > tempfile
mv s1 s1.old
mv tempfile s1
echo $K| awk '{print strftime("%d/%m/%Y:%T",$1)}'|tee -a ass
done
答案1
代替:
while [$k -ne $SDATE]
尝试:
while [ $k -ne $SDATE ]