' z. b$ P1 y6 o+ N Options: / r: T4 W, P# H' c! S- @ & S9 M, d. g: k4 C! W: ~5 V -t Ping the specified host until stopped.To see statistics and continue - type Control-Break;To stop - type Control-C. 3 H' [1 I/ P. n; A- W. G* F & b& [9 v# {8 T) E" A( p& a& R6 R$ f
不停的ping地方主机，直到你按下Control-C。 4 B/ l6 M# c h5 ]" ?( @( h
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此功能没有什么特别的技巧，不过可以配合其他参数使用，将在下面提到。 , ~' F( ], o7 O3 S. N
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-a Resolve addresses to hostnames. / [! I J! D5 J4 x- o" f5 _$ W
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解析计算机NetBios名。 + ?# O: j6 H' O( f7 k" V k( } [, t4 P& S/ @( ~. i6 l
示例：C:＼>ping -a 192.168.1.21 7 F' G- u/ Q+ p7 } % j) d- }) I8 H. `) G6 x8 w Pinging iceblood.yofor.com [192.168.1.21] with 32 bytes of data: ' v8 v+ d5 C4 v/ s0 A1 S. ^
7 w" I( Y7 W1 f1 m/ ]/ k Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 / f, \7 l' r$ h; E0 l0 g
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Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 - o$ x: s. \; y1 u- v+ l- w
; W3 _. `5 `6 R. ~; {" d Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 ! W% d, Y* o& e
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Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 - Q. X, A8 F! Q8 S1 g$ T i a. d- `' T3 B: A |4 C' F3 e
Ping statistics for 192.168.1.21: 6 }7 p$ I( |$ z( r/ b x! n
2 h% u: C# l8 {- S7 r- F Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: 5 v' [/ q, d q* E7 L) e8 o& N ( P# d d) ~: }, P2 s9 a' x
Minimum = 0ms, Maximum = 0ms, Average = 0ms 2 C" k3 v. c2 H. R& ]) B* u
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从上面就可以知道IP为192.168.1.21的计算机NetBios名为iceblood.yofor.com。 ) p' o: k1 G! p* Z! _( [; L; {
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-n count Number of echo requests to send. . I K+ h) u9 C, S+ C2 ^: D) v 4 L+ C+ q. w1 h& E4 I! E' ^" _
发送count指定的Echo数据包数。 . \0 s$ G1 H: o# A1 r1 ^ ) B# l5 H2 s2 K) C 在默认情况下，一般都只发送四个数据包，通过这个命令可以自己定义发送的个数，对衡量网络速度很有帮助，比如我想测试发送50个数据包的返回的平均时间为多少，最快时间为多少，最慢时间为多少就可以通过以下获知： ! b0 N+ e: ^3 V* v3 ~/ m# \* _ H
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C:＼>ping -n 50 202.103.96.68 + X( D- X) E: Y7 e0 Q1 u) S & A6 e: r6 \6 u5 D. D( v( r
Pinging 202.103.96.68 with 32 bytes of data: 4 p8 p7 e+ I. v0 [7 i
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Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 4 b' u" S8 x% P. ^
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Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 5 ]7 }7 a& w. \ 3 L/ \4 ?1 V: t1 i
Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 - \6 w, l2 y" ?8 L0 l$ ?
3 j, K% p n, H8 c1 \" E Request timed out. 4 z5 }7 s: v( i9 v3 G A( m3 Q4 _! p3 C. \9 J
……………… , G+ _: r* ~, P - B0 \5 _8 v; S9 e8 f0 d Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 9 {8 T; ^+ a& | 5 ]3 W( u5 Y% j- o* u
Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 6 s2 ]! \' a( s- z/ H" k9 w, ~
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Ping statistics for 202.103.96.68: . e& h" P. i( f+ Y- l! U 3 a3 S' H' d& u5 c1 k4 L
Packets: Sent = 50, Received = 48, Lost = 2 (4% loss),Approximate round trip times in milli-seconds: # h- @' v* }! }% H, o f
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Minimum = 40ms, Maximum = 51ms, Average = 46ms 6 M: ~+ I) l+ j$ C " r0 }( O' A5 |9 ?
从以上我就可以知道在给202.103.96.68发送50个数据包的过程当中，返回了48个，其中有两个由于未知原因丢失，这48个数据包当中返回速度最快为40ms，最慢为51ms，平均速度为46ms。 / N, y5 N% W2 Q7 n1 `3 }! U
