bashism in sshx.sh

[juliantaylor]

the default sshx.sh in 0.10.1 and lower uses a bash feature in a shell which may not support it:

#!/bin/sh
"$@" &> /dev/null &
echo $!

the non-posix redirection &> may not be supported when /bin/sh does not support it, e.g. dash.
a possible fix is:
"$@" > /dev/null 2>&1 &

[fperez]

Thanks for the report and fix! Committed locally, this will close when I push.

[fperez]

Remove bash-ism and use standard posix redirect in sshx.sh script.

Closed by a63739a, thanks to github user juliantaylor for the fix!