如下SHELL
#!/bin/sh
cat file | while read line
do
echo "press any key"
read key
done
read key这条语句不起作用,到底怎么回事?file为一个文本文件
while read line
do
ehco "hello"
done < file
下面引用由yjlucky在 2002/10/09 09:07pm 发表的内容:
如下SHELL
#!/bin/sh
cat file | while read line
do
...
read key 当然也是从file里读了.
在循环中用read可以用以下方法!
for line in `cat file`
do
echo "press any key"
read key
done
不行吧,那样line的内容就是一个个单词而不是一行行了。
楼主的意思好象是读完一行,敲任意键再读下一行吧?
line 的值时file全文不是一行。
程序的设计思路不是太好,若一定要这要作,也可以作到:
cat file | while read line
do
echo $line
(echo "press any key:c"; exec </dev/tty; read key)
done
高!
麻烦exec </dev/tty是做什么的?
我想应该是定向下一步的操作(read key)从键盘读输入吧
binary 说得对。
当需要对键盘输入进行判断并处理时,如下的脚本更好一点:
cat file | while read line
do
echo $line
echo " :: Please input any key(s):c"
str4read=""
while true
do
chr4read=`dd if=/dev/tty bs=1 count=1 2>/dev/null`
str4read=$str4read$chr4read
if [ "$chr4read" = "" ] ;then break; fi
done
echo " :: |$str4read|"
done