Clear File Content

In some cases, you need to clear the file content rather than delete the file. For example, log file (log.txt );

Command:True> file name

For example:

-- Create an object

[[Email protected] bdump] $ VI a.txt

-- Enter the content, for example:

123

-- View File Content

-- Clear the file

[[Email protected] bdump] $ true> a.txt

-- Verify whether the file content is deleted:

[[Email protected] bdump] $ cat a.txt
[[Email protected] bdump] $

-- The result is null.

-- This article reference: http://blog.csdn.net/whaosy/article/details/5853459