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This article is to share with you about how linux can quickly empty files. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

There are N ways to quickly empty a file. I prefer the following one because it is the shortest.

$> access.log

Not enjoyable? Well, by the way, I'd like to summarize some of the other most common ways to empty files.

: > access.logtrue > access.logcat / dev/null > access.logecho-n "" > access.logecho > access.logtruncate-s 0 access.log

To put it simply,: in shell, it is a built-in command to indicate no-op, which probably means an empty statement, so the usage of: is to output nothing after executing the command, overwriting the empty content to the file.

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