$ : > filename
$ > filename
$ echo "" > filename 会多一行回车
$ echo > filename 会多一行回车
$ cat /dev/null > filename
$ truncate -s 0 filename
若系统提示权限不足,则执行sudo chmod 777 filename(文件名)
“The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time.” – Tom Cargill
标 题:linux中快速清空文件内容的几种方法