To ping a whole subnet , only one time , discover alive hosts and print only those ,
give:
fping -r 0 -q -a -g 192.168.1.0/24 2>/dev/null
2>/dev/null redirects standard error to /dev/null
thk
give:
fping -r 0 -q -a -g 192.168.1.0/24 2>/dev/null
2>/dev/null redirects standard error to /dev/null