How to create an empty file (0-byte size) using Linuxshell

The method echo & gt; fileName used to create an empty file (0-byte size) in Linuxshell is one byte. After learning, it is found that the file that creates an empty file (0 byte size) has the following methods: 1. when the file does not exist, touchfile can create an empty file 2,: & gt; file can create an empty file ,... linux shell to create an empty file (0 byte size) method echo> fileName to create a file is 1 byte. After learning, you can find that the file that creates an empty file (0 byte size) has the following methods: 1. if the file does not exist, touch file can create an empty file. 2. file can create an empty file, if a file exists, the file is truncated to 0 Bytes. 3.> file can be used to complete the same functions as:> file in bash, however, tcsh cannot use the same functions as file. if bash completes:> file, but tcsh cannot use the following functions, no content is output here. V. cat/dev/null> file 6. mktemp