症状： 在Red Hat Linux 9环境下，用vi进行编辑的时候报错：
E325: ATTENTION
Found a swap file by the name ".Test.c.swp"
owned by: root dated: Wed Dec 7 13:52:56 2011
file name: /var/tmp/Test.c
modified: YES
user name: root host name: localhost
process ID: 26153 (still running)
While opening file "Test.c"
dated: Wed Dec 7 14:00:46 2011
NEWER than swap file!
(1) Another program may be editing the same file.
If this is the case, be careful not to end up with two
different instances of the same file when making changes.
Quit, or continue with caution.
(2) An edit session for this file crashed.
If this is the case, use ":recover" or "vim -r Test.c"
to recover the changes (see ":help recovery").
If you did this already, delete the swap file ".Test.c.swp"
to avoid this message.
"Test.c" 11L, 237C
Press ENTER or type command to continue错误原因：之前使用vi操作Test.c文件时出现了异常中断，所以在当前目录下产生了一个名为.Test.c.swp的隐藏文件
解决方案:直接删除该文件即可