如何让 cp 命令根据时间覆盖存在的文件？5555着急呀

liang573728

你看这个行不行
[devis@speed22 tmp2]$ cat 1.sh
#!/bin/sh

for var in `ls *`
do
[[ $var -nt "/home/_devis/tmp/$var" ]]&& echo "$var new"
[[ $var -ot "/home/_devis/tmp/$var" ]]&& echo "/home/_devis/tmp/$var old"
done


将其中的路径和&&语句后命令改为你自己的


不过，我用sh -x 运行时候，没有问题
[devis@speed22 tmp2]$ sh -x 1.sh
++ ls 1.sh 2.txt 3.txt
+ [[ 1.sh -nt /home/_devis/tmp/1.sh ]]
+ echo '1.sh new'
1.sh new
+ [[ 1.sh -ot /home/_devis/tmp/1.sh ]]
+ [[ 2.txt -nt /home/_devis/tmp/2.txt ]]
+ echo '2.txt new'
2.txt new
+ [[ 2.txt -ot /home/_devis/tmp/2.txt ]]
+ [[ 3.txt -nt /home/_devis/tmp/3.txt ]]
+ [[ 3.txt -ot /home/_devis/tmp/3.txt ]]
+ echo '/home/_devis/tmp/3.txt old'
/home/_devis/tmp/3.txt old


但是用1.sh直接运行时候，显示错误，请高手指点
done
[devis@speed22 tmp2]$ 1.sh
/home/_devis/1.sh: line 10: ur_command: command not found
/home/_devis/1.sh: line 10: ur_command: command not found
/home/_devis/1.sh: line 10: ur_command: command not found

[ 本帖最后由 liang573728 于 2006-8-13 20:02 编辑 ]