Run a command in shell with stdout and stderr redirected to null

quiet.sh

#!/bin/sh
# Run a command with stdout and stderr redirected to null
# Usage:
#     $ quiet foo

# Check command is valid
command -v $1 >/dev/null 2>&1 || { echo >&2 "$1: command not found"; exit 1; }

# Run command with all arguments
$@ >/dev/null 2>&1

Installation:

$ cp quiet.sh /some/path/to/personal/bin/quiet
$ chmod 755 /some/path/to/personal/bin/quiet

This doesn't work with filenames with spaces, e.g.:

$ quiet evince some\ filename\ with\ spaces.pdf &