由于一些原因，比如需要檢查網(wǎng)絡(luò)之間是否存在掉包等問題，會長時(shí)間去ping一個(gè)地址，由于會輸出大量的信息而且最好要有時(shí)間戳，因此我們可以使用簡單的幾個(gè)shell命令組合就可以實(shí)現(xiàn)：長時(shí)間ping一個(gè)地址，記錄每次ping的時(shí)間戳，并輸出到文本保存，另外我們還可以將這個(gè)動作放到后臺去執(zhí)行，以免登陸注銷之后被中斷。
首先是長時(shí)間ping，這個(gè)非常簡單，使用參數(shù)-c即可：
[root@test ~]# ping 192.168.2.1 -c 10
PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data.
64 bytes from 192.168.2.1: icmp_seq=1 ttl=64 time=0.638 ms
64 bytes from 192.168.2.1: icmp_seq=2 ttl=64 time=0.341 ms
64 bytes from 192.168.2.1: icmp_seq=3 ttl=64 time=0.291 ms
64 bytes from 192.168.2.1: icmp_seq=4 ttl=64 time=0.259 ms
64 bytes from 192.168.2.1: icmp_seq=5 ttl=64 time=0.338 ms
64 bytes from 192.168.2.1: icmp_seq=6 ttl=64 time=0.339 ms
64 bytes from 192.168.2.1: icmp_seq=7 ttl=64 time=0.243 ms
64 bytes from 192.168.2.1: icmp_seq=8 ttl=64 time=0.234 ms
64 bytes from 192.168.2.1: icmp_seq=9 ttl=64 time=0.333 ms
64 bytes from 192.168.2.1: icmp_seq=10 ttl=64 time=0.284 ms

--- 192.168.2.1 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9002ms
rtt min/avg/max/mdev = 0.234/0.330/0.638/0.109 ms
上面我們ping了10次，每次的時(shí)間1秒，因此比如你要ping連天那么就是60*60*24*2=172800。
接下來是加時(shí)間戳：
root@test ~]# ping 192.168.2.1 -c 10 | awk '{ print $0"\t" strftime("%H:%M:%S",systime()) } '
PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data.    10:30:21
64 bytes from 192.168.2.1: icmp_seq=1 ttl=64 time=0.436 ms    10:30:21
64 bytes from 192.168.2.1: icmp_seq=2 ttl=64 time=0.343 ms    10:30:22
64 bytes from 192.168.2.1: icmp_seq=3 ttl=64 time=0.368 ms    10:30:23
64 bytes from 192.168.2.1: icmp_seq=4 ttl=64 time=0.280 ms    10:30:24
64 bytes from 192.168.2.1: icmp_seq=5 ttl=64 time=0.308 ms    10:30:25
64 bytes from 192.168.2.1: icmp_seq=6 ttl=64 time=0.360 ms    10:30:26
64 bytes from 192.168.2.1: icmp_seq=7 ttl=64 time=0.319 ms    10:30:27
64 bytes from 192.168.2.1: icmp_seq=8 ttl=64 time=0.274 ms    10:30:28
64 bytes from 192.168.2.1: icmp_seq=9 ttl=64 time=0.360 ms    10:30:29
64 bytes from 192.168.2.1: icmp_seq=10 ttl=64 time=0.265 ms    10:30:30
    10:30:30
--- 192.168.2.1 ping statistics ---    10:30:30
10 packets transmitted, 10 received, 0% packet loss, time 9000ms    10:30:30
rtt min/avg/max/mdev = 0.265/0.331/0.436/0.052 ms    10:30:30
然后我們把信息輸出到文本：
[root@test ~]# ping 192.168.2.1 -c 10 | awk '{ print $0"\t" strftime("%H:%M:%S",systime()) } '>ping.log
[root@test ~]# cat ping.log
PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data.    10:37:23
64 bytes from 192.168.2.1: icmp_seq=1 ttl=64 time=0.398 ms    10:37:23
64 bytes from 192.168.2.1: icmp_seq=2 ttl=64 time=0.288 ms    10:37:24
64 bytes from 192.168.2.1: icmp_seq=3 ttl=64 time=0.465 ms    10:37:25
64 bytes from 192.168.2.1: icmp_seq=4 ttl=64 time=0.310 ms    10:37:26
64 bytes from 192.168.2.1: icmp_seq=5 ttl=64 time=0.275 ms    10:37:27
64 bytes from 192.168.2.1: icmp_seq=6 ttl=64 time=0.247 ms    10:37:28
64 bytes from 192.168.2.1: icmp_seq=7 ttl=64 time=0.339 ms    10:37:29
64 bytes from 192.168.2.1: icmp_seq=8 ttl=64 time=0.270 ms    10:37:30
64 bytes from 192.168.2.1: icmp_seq=9 ttl=64 time=0.297 ms    10:37:31
64 bytes from 192.168.2.1: icmp_seq=10 ttl=64 time=0.289 ms    10:37:32
    10:37:32
--- 192.168.2.1 ping statistics ---    10:37:32
10 packets transmitted, 10 received, 0% packet loss, time 9000ms    10:37:32
rtt min/avg/max/mdev = 0.247/0.317/0.465/0.067 ms    10:37:32
最后，我們需要把任務(wù)放到后臺去：
[root@test ~]# nohup ping 192.168.2.1 -c 10 | awk '{ print $0"\t" strftime("%H:%M:%S",systime()) } '>ping1.log &
[1] 2616
[root@test ~]# ls
anaconda-ks.cfg  check1.sh  Desktop  eygle.com  httpd  login  pass.conf  ping1.log  ping.log  test1.sh  test1.sh1
[root@test ~]# cat ping1.log
PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data.    10:40:22
64 bytes from 192.168.2.1: icmp_seq=1 ttl=64 time=0.373 ms    10:40:22
64 bytes from 192.168.2.1: icmp_seq=2 ttl=64 time=0.343 ms    10:40:23
64 bytes from 192.168.2.1: icmp_seq=3 ttl=64 time=0.335 ms    10:40:24
64 bytes from 192.168.2.1: icmp_seq=4 ttl=64 time=0.299 ms    10:40:25
64 bytes from 192.168.2.1: icmp_seq=5 ttl=64 time=0.372 ms    10:40:26
64 bytes from 192.168.2.1: icmp_seq=6 ttl=64 time=0.236 ms    10:40:27
64 bytes from 192.168.2.1: icmp_seq=7 ttl=64 time=0.394 ms    10:40:28
64 bytes from 192.168.2.1: icmp_seq=8 ttl=64 time=0.317 ms    10:40:29
64 bytes from 192.168.2.1: icmp_seq=9 ttl=64 time=0.490 ms    10:40:30
64 bytes from 192.168.2.1: icmp_seq=10 ttl=64 time=1.65 ms    10:40:31
    10:40:31
--- 192.168.2.1 ping statistics ---    10:40:31
10 packets transmitted, 10 received, 0% packet loss, time 9001ms    10:40:31
rtt min/avg/max/mdev = 0.236/0.480/1.650/0.395 ms    10:40:31

-The End-