( cmdpid=$BASHPID; (sleep 10; kill $cmdpid) & exec command )
string split on first space:
arg1: echo "${var% *}"
arg2: echo "${var#* }"
( cmdpid=$BASHPID;
(sleep 10; kill $cmdpid)
& while ! ping -w 1 www.goooooogle.com
do
echo crap;
done )
find -name "* *" -type f | rename 's/ /_/g'