/dev/null file

/dev/null file

If you want to execute a command, but you do not want the output to appear on the screen, you can redirect the output to/dev/null:

>/dev/null 

/dev/null is a special file, and the content written to it is discarded, and if you try to read from the file, nothing is read. However, the/dev/null file is very useful and redirects the output of the command to it, which results in a "no output" effect.

If you want to block stdout and stderr, you can write this:

>/dev/null2>&1    

Note:0 is the standard input (STDIN), 1 is the standard output (STDOUT), and 2 is the standard error output (STDERR).

/dev/null file