5 m: `2 }& a8 z6 I5 P7 y Options: 3 F5 i/ d! k$ P1 ~- n w
5 f% n/ [' C) e) k -t Ping the specified host until stopped.To see statistics and continue - type Control-Break;To stop - type Control-C. 1 `1 q) Q; y+ O* ` 7 _; j" s4 u& _4 q- ?" h 不停的ping地方主机，直到你按下Control-C。 * x8 b7 B+ J, o
: F. z! ^, R+ K! j2 P4 ~ 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。 4 r/ T& U* ]3 e, k, G / E+ x% |; X- f7 k( c$ s& o( p" l -a Resolve addresses to hostnames. % B8 t. W! I: r4 z) U" g9 y
2 }( w/ R9 h; r. `& B7 k) k; H 解析计算机NetBios名。 9 g( j( t7 p T$ _. u ' F3 v b8 E7 p) C6 O' Y 示例：C:＼>ping -a 192.168.1.21 " q) |7 ?) u d3 [
8 c/ V2 T2 e9 x' m( V3 _& k0 O Pinging iceblood.yofor.com [192.168.1.21] with 32 bytes of data: / z5 ~5 }' b* E6 a- S" {7 l
, o# a6 ~4 g3 W5 g2 c) v Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 \# W, e& N! U5 f L) x
) }& E8 h1 c8 J2 k Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 + ^& x ~+ r8 T* U0 W' W
& B7 b7 Q: c: D" n. q: r/ Z9 K. J Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 , z% C1 l& `' ^ ! c7 r# b1 n- J% w. Q3 s0 T( l ) s3 @/ W. a$ S O$ w( M
Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 & O) u/ v9 D+ }8 E% y . s2 t1 y! x8 p$ B
Ping statistics for 192.168.1.21: . Q0 R0 m) r% F0 ^( c$ S* X! b % Q$ b$ @; @/ N: C S D Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: " y1 }1 D6 q+ f7 f/ d* V9 k6 ? 5 r9 @1 V, r3 R* c4 s
Minimum = 0ms, Maximum = 0ms, Average = 0ms - m4 H* N, f; |/ t7 r+ S ; t7 d' S2 P% J 从上面就可以知道IP为192.168.1.21的计算机NetBios名为iceblood.yofor.com。 1 X O8 T2 [, D* {; c * _& \0 [+ q i# l2 D6 {- L- ` -n count Number of echo requests to send. 0 ~- P: P+ k P " J: C% t3 D4 T% {
发送count指定的Echo数据包数。 * s6 z8 v2 v' O! u3 b$ [, t
2 ]0 t; P9 u' h! \/ Z a 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： ) x" O0 d+ {4 l1 J, Q) ?0 X1 y# b
+ o: V9 K4 F# E5 Q, M$ P/ o C:＼>ping -n 50 202.103.96.68 ( D; D5 A6 S+ Q+ F* _ ; @3 `! W8 I$ }6 A! Y8 W* K; E Pinging 202.103.96.68 with 32 bytes of data: % l' {0 b2 r# z5 s, W6 ~" i3 m f
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Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 ) R0 H' N) L- a8 ?6 z& \, Q ! K' b$ J) q' q. I+ ~, c
Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 ; X5 V1 B# c, ]. F( o- a
7 o0 Q# C+ O9 f% H7 e. l
Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 6 I# |6 n/ c( I$ z9 T \8 s8 p
9 V. N( K$ I3 K. {0 h: I. N Request timed out. * \1 d1 \1 O3 O . K; J; p! Z ~0 g- n1 f5 r G
……………… ' l+ q& _/ i$ ?) p2 h 8 X. n, q6 a% b. v) n A9 w6 Z Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 ! M* D1 C' e+ b / Z/ Y; b" ^' ^ Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 1 `' L6 c2 ~1 S" [& H$ p
% X8 a0 W$ L5 q* Q1 I2 E1 f
Ping statistics for 202.103.96.68: % n+ J- Y' k( s0 c 2 I5 o6 j# L c, R# { Packets: Sent = 50, Received = 48, Lost = 2 (4% loss),Approximate round trip times in milli-seconds: ) a+ V* `: [8 ]/ R9 [ ! n# Z0 q2 K) J Minimum = 40ms, Maximum = 51ms, Average = 46ms 3 A$ W& a# _. L/ g' B 9 T J, q9 d# m
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。 4 n7 O U5 C! s0 T+ [' K+ T
( c( i) Q, w; z2 z6 D% O -l size Send buffer size. # H4 B3 n. l" L% B! K 6 p2 C& J1 k4 @( a# }
定义echo数据包大小。作者: 冷雨清心 时间: 2008-9-25 15:54
