使用true命令重定向清空文件:
[root@localhost logs]# du -h catalina.out
12G catalina.out
[root@localhost logs]# true > catalina.out
[root@localhost logs]# du -h catalina.out
0 catalina.out
个人备忘,转载自@博客园[传送门]
[root@localhost logs]# du -h catalina.out
12G catalina.out
[root@localhost logs]# true > catalina.out
[root@localhost logs]# du -h catalina.out
0 catalina.out