问问 关于Shell的重定向~~~
如果自己写个脚本,在调用的时候是可以指定重定向的,
比如 ./install.sh > install.log
但是这有个缺点,比较麻烦,
而且不能保证别人调用的时候都这么写,
我现在想:不管是谁调用,都留个日志,
所以,能不能在 install.sh 脚本里,自己给自己重定向呢?
谢谢~
可以这样试试:
- Assembly code
[root@RHEL6A shcode]# ls
config nohup.out sh12.sh sh14.sh sh16.sh sh18.sh sh20.sh sh22.sh sh24.sh sleep.sh
ftpautologin.sh sh11.sh sh13.sh sh15.sh sh17.sh sh19.sh sh21.sh sh23.sh sh25.sh temp.sh
[root@RHEL6A shcode]# ./sh25.sh
[root@RHEL6A shcode]# ls
config nohup.out sh13.sh sh16.sh sh19.sh sh22.sh sh25.sh
ftpautologin.sh sh11.sh sh14.sh sh17.sh sh20.sh sh23.sh sleep.sh
mylog.txt sh12.sh sh15.sh sh18.sh sh21.sh sh24.sh temp.sh
[root@RHEL6A shcode]# cat mylog.txt
hello
ls: cannot access aaabbbccc: No such file or directory
[root@RHEL6A shcode]# cat sh25.sh
#!/bin/sh
exec 1>mylog.txt 2>&1
echo 'hello'
ls aaabbbccc[root@RHEL6A shcode]#
exec就可以了。
exec 1>mylog.txt 2>&1
基础
这种问题自己试一下不就知道了,还是用前面贴的代码示例:
- Assembly code
[root@RHEL6A shcode]# ./sh25.sh >> mylog2.txt
[root@RHEL6A shcode]# ls
config mylog.txt sh12.sh sh15.sh sh18.sh sh21.sh sh24.sh temp.sh
ftpautologin.sh nohup.out sh13.sh sh16.sh sh19.sh sh22.sh sh25.sh
mylog2.txt sh11.sh sh14.sh sh17.sh sh20.sh sh23.sh sleep.sh
[root@RHEL6A shcode]# cat mylog.txt
hello
ls: cannot access aaabbbccc: No such file or directory
[root@RHEL6A shcode]# cat mylog2.txt
[root@RHEL6A shcode]#