bash修改

cloudliu13

题目：

Write a script that upon invocation shows the time and date, lists all logged-in users, and gives the
system uptime. The script then saves this information to a logfile.


以下是我写的。
#!/bin/bash
#Program:
#         Program will show the date, time, current logged-in users and system uptime.
#+The save these information to a logfile.


cat /dev/null > /tmp/logit.log

echo -e "\nDate:`date +%F`" 2>> /tmp/logit.log

echo -e "Time: `date +%r`\n" 2>> /tmp/logit.log

echo -e "***********************Logged-in users************************************* \n" 2>> /tmp/logit.log
w 2>> /tmp/logit.log
echo -e "\n************************************************************************* \n" 2>> /tmp/logit.log


echo -e "How long the system has been running?\n" 2>> /tmp/logit.log

uptime 2>> /tmp/logit.log

echo -e "\n"

MMMIX

回复 1# cloudliu13


    可以参考如下脚本进行 I/O 重定向:

1. 
   
2. #!/usr/bin/bash
   
3. 
   
4. exec > >(tee /tmp/log.txt) 2>&1
   
5. 
   
6. date
   
7. w
   
8. uptime
   

复制代码

来自 http://stackoverflow.com/questio ... -bash-script-itself