7 ?- O' d( ^! l' |# x/ o- p4 a7 n9 G# {. a -a Resolve addresses to hostnames. 1 v) V0 [" U- P
) j9 J6 O3 Z3 } 解析计算机NetBios名。 - u4 o9 O8 X: n; w1 i2 m+ R
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示例：C:＼>ping -a 192.168.1.21 " [& l2 Y: ^6 a- `5 w 6 _' g4 l9 A; [! g7 w) c* q: Q
Pinging iceblood.yofor.com [192.168.1.21] with 32 bytes of data: ' g0 a0 n3 M B, A+ U+ m
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Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 9 M6 E) [2 c* A+ |% l4 _ . Q' l3 F8 f* ?0 O- s
Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 R5 b6 O" m/ i# E2 P4 b3 w" j 4 j9 ]- I$ K0 Q' i. k; w
Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 * i% s5 j* D' w! u
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Reply from 192.168.1.21: bytes=32 time<10ms TTL=254 4 s- P" L2 i& b$ j) z' n5 k0 w " Q& S) {9 S: Y8 k Ping statistics for 192.168.1.21: 5 l7 v% z( S! t3 w1 w: p( x ( I+ w, o9 z, N5 D8 H6 N Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: 8 i" D" C9 |4 C" B4 D
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Minimum = 0ms, Maximum = 0ms, Average = 0ms 5 b" r; ~5 ^2 X$ t d! J
+ S6 J5 |' f: j3 L9 Y$ i 从上面就可以知道IP为192.168.1.21的计算机NetBios名为iceblood.yofor.com。 6 b( A; w+ r# g/ H. V3 @: w 0 |8 f( Z* _8 t, P! B, A4 ^
-n count Number of echo requests to send. 9 |( V h2 Z& [9 k. r5 _
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发送count指定的Echo数据包数。 8 |4 B$ _- b1 d( y A1 _/ N$ `# W* ?9 K $ | r q- z9 r
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： 0 c6 X' e$ s7 }& v/ l5 a ( h4 |* ?0 v9 B+ v# F$ R- `* m' M
C:＼>ping -n 50 202.103.96.68 . M& C- R1 v7 i4 r4 E+ C3 Z9 Z ! W% t$ C6 j: G4 W5 m' ?5 B D! Z7 h Pinging 202.103.96.68 with 32 bytes of data: / {! }& y' P9 N: `% R 6 C8 x7 f" ^) |+ ~0 ?# L0 T Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 8 x, }7 K$ c& ?' q1 ^ " w6 Z9 }% W& |; j3 \7 d" b Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 9 q' r$ g& C7 d6 M, t4 B: n
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Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 Q0 H. M! Z r% X9 W4 E. ] * s1 i1 D/ t( _" y Request timed out. 4 X/ ~" v5 L F
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) N; n8 T( B* M4 G7 `. Z+ a Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 ' J/ G: u1 _1 L1 C! y& v " A' Z2 n4 G! Q Reply from 202.103.96.68: bytes=32 time=50ms TTL=241 1 F" R, w3 Z9 F1 S7 r* E ( p% _ x; o- x$ M; K
Ping statistics for 202.103.96.68: d1 ~6 O' M @3 G: z9 y$ @' S* P0 a' m
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Packets: Sent = 50, Received = 48, Lost = 2 (4% loss),Approximate round trip times in milli-seconds: 4 i- S' J6 ~7 |/ C9 W 3 ]1 y4 i N3 s, `4 D* S4 K Minimum = 40ms, Maximum = 51ms, Average = 46ms 7 @9 V1 A. n5 o" q4 l% x* N- S
7 v7 b" b, R& I+ Q/ l 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。 6 ]: u& L8 Z; v4 U- S T
1 c" ?5 R7 C8 m4 Z5 @( `2 i -l size Send buffer size. ; T8 g7 U2 ]8 {! x% U $ G# T! b4 C& Q2 {7 C
定义echo数据包大小。作者: 冷雨清心 时间: 2008-9-25 15:54
