Is silence output in a bash script using a function recommended?

Question

Suppose someone writes a bash script in which to disable stdout, stderr and provide user output.

Is it possible to use the function as shown below:

dump(){
    "$@" > /dev/null 2>&1
}

And then

dump rm filename || echo "custom-message"

What are the possible cases when it does not work properly?

Answer 1

This is a good technique. I use something like this all the time. Pros:

• Saves the command exit code.
• Hides the output of almost every program, unless they write directly to /dev/ttyor /dev/console, which is rare and probably for a good reason.
• , . cd, pushd/popd ..
• stdin. dump , .
• "$@" , .

!

, , , dump .