[awk]练习2

#!/usr/bin/awk -f# show how many users in different networkBEGIN {     FS = ";";    net1 = 0; net1_down = 167837696; net1_up = 167903231;         net2 = 0; net2_down = 167903232; net2_up = 167968767;         net3 = 0; net3_down = 167968768; net3_up = 168034303 }{     if(net1_down <= $2 && $2 <=  net1_up  ){net1++}     else     if(net2_down <= $2 && $2 <=  net2_up  ){net2++}     else    if(net3_down <= $2 && $2 <=  net3_up  ){net3++}}END {     printf("total user: %d\n    10.1:   %d\n    10.2:   %d\n    10.3:   %d\n", NR, net1, net2, net3)}