tclsh foreach address { 10.1.1.2 10.1.1.3 10.1.3.1 172.16.1.1 172.31.1.1 192.168.1.1 192.168.5.5 192.168.9.9 192.168.13.13 192.168.17.17 192.168.21.21 192.168.25.25 192.168.100.1 192.168.200.1 192.168.200.5 192.168.200.9 192.168.200.12 192.168.200.17 192.168.200.21 192.168.200.25 192.168.100.2 } { ping $address }