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How do you get Dev Null?
You write to /dev/null every time you use it in a command such as touch file 2> /dev/null. You read from /dev/null every time you empty an existing file using a command such as cat /dev/null > bigfile or just > bigfile. Because of the file’s nature, you can’t change it in any way; you can only use it.
What is 2 nul?
Standard output is going to nul and standard error output (file descriptor 2) is being sent to standard output (file descriptor 1) so both error and normal output go to the same place. In Windows, nul is a null device, which means the output is just flushed and you don’t see it.
How do I redirect error messages to / dev / null?
In Unix, how do I redirect error messages to /dev/null? You can send output to /dev/null, by using command >/dev/null syntax. However, this will not work when command will use the standard error (FD # 2). So you need to modify >/dev/null as follows to redirect both output and errors to /dev/null.
Why does shell redirect to / dev / null?
This is because of using > /dev/null 2>&1 will redirect all your command output (both stdout and stderr) to /dev/null, meaning no outputs are printed to the terminal. To understand this easily, write it out explicitly.
How to send output to / dev / null?
You can send output to /dev/null, by using command >/dev/null syntax. However, this will not work when command will use the standard error (FD # 2). So you need to modify >/dev/null as follows to redirect both output and errors to /dev/null. Syntax to redirect error and output messages to /dev/null
How to redirect error output to null in Linux?
Unix and Linux: Redirect Error Output To null Command 1 stdin – 0 – St an d ard In put (usually keyboard or file) 2 stdout – 1 – St an d ard Out put (usually screen) 3 stderr – 2 – St an d ard Err or (usually screen)