What Does 2 Dev Null Mean in Linux

Specifying 2>/dev/null will filter out the errors so that they will not be output to your console. In more detail: 2 represents the error descriptor, which is where errors are written to. By default they are printed out on the console. \> redirects output to the specified place, in this case /dev/null.

What does it mean Dev null 2 >& 1?

2>&1 redirects standard error to standard output. &1 indicates file descriptor (standard output), otherwise (if you use just 1 ) you will redirect standard error to a file named 1 . [any command] >>/dev/null 2>&1 redirects all standard error to standard output, and writes all of that to /dev/null .

What is the meaning of 2 &1 in Linux?

&1 is used to reference the value of the file descriptor 1 (stdout). Now to the point 2>&1 means “Redirect the stderr to the same place we are redirecting the stdout” Now you can do this. <br. cat maybefile.txt > output.txt 2>&1.