Admin
1
i=5
expr $i + 6 1>/dev/null
Redirect stdout to /dev/null. How about
expr $i + 6 >/dev/null
What is the difference between expr $i + 6 1>/dev/null and expr $i + 6 >/dev/null?
Someone writes
expr $i + 6 &>/dev/null
And what does it mean?
command >/dev/null is a shorthand for command 1>/dev/null, it redirects stdout to /dev/null.
command &>/dev/null is a shorthand for command 1>/dev/null 2>&1, it redirects both stdout and stderr to /dev/null.
