$ ./bench
grep:
real    0m0.378s
user    0m0.224s
sys     0m0.160s

awk:
real    0m4.847s
user    0m4.732s
sys     0m0.128s

sed:
real    0m1.295s
user    0m1.164s
sys     0m0.144s

perl:
real    0m1.053s
user    0m0.924s
sys     0m0.144s