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grep 后面的正则表达式用单引号和双引号有什么区别？
zhuzhzh@focus:~$ grep '[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}' proxy.html
zhuzhzh@focus:~$ grep '[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}\.' proxy.html
zhuzhzh@focus:~$ grep '[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}' proxy.html
zhuzhzh@focus:~$ grep '[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}\.' proxy.html
zhuzhzh@focus:~$ grep '[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}' proxy.html
zhuzhzh@focus:~$ grep '[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]\{1,3\}' proxy.html
zhuzhzh@focus:~$ grep '[0－9]\{1,3\}\.[0－9]\{1,3\}\.[0－9]' proxy.html
zhuzhzh@focus:~$ grep '[0－9]\{1,3\}\.[0－9]\{1,3\}\.' proxy.html
<span id="lbl_proxy"><table cellspace=0 cellpadding=0 border=0 width=100%><tr width=100%><td>218.56.32.230:8080@HTTP</td><td>210.77.192.186:3128</td></tr><tr width=100%><td>202.118.73.189:8000@HTTP</td><td>210.83.207.37:3128@HTTP</td></tr><tr width=100%><td>219.243.136.235:8080@HTTP</td><td>210.21.73.206:80@HTTP</td></tr><tr width=100%><td>202.103.252.86:3128@HTTP</td><td>202.97.142.41:3128@HTTP</td></tr><tr width=100%><td>202.108.2.33:80@HTTP</td><td>210.21.115.41:80@HTTP</td></tr><tr width=100%><td>202.196.83.19:8000@HTTP</td><td>219.149.217.102:80@HTTP</td></tr><tr width=100%><td>211.94.191.11:80</td><td>202.97.142.40:3128@HTTP</td></tr><tr width=100%><td>218.56.32.2:1080@SOCKS4</td><td>168.160.229.2:8080@HTTP</td></tr><tr width=100%><td>211.155.224.26:8080@HTTP</td><td>210.73.64.145:8080@HTTP</td></tr><tr width=100%><td>218.93.119.83:8080@HTTP</td><td>61.174.212.38:3128@HTTP</td></tr><tr width=100%><td>219.140.161.24:80@HTTP</td><td>221.239.90.253:8080@HTTP</td></tr><tr width=100%><td>218.97.253.217:80@HTTP</td><td>61.179.12.211:80@HTTP</td></tr><tr width=100%><td>218.57.243.53:3128@HTTP</td><td>202.114.34.24:3128@HTTP</td></tr><tr width=100%><td>221.239.90.253:80@HTTP</td><td>221.212.177.97:80@HTTP</td></tr><tr width=100%><td>218.25.251.168:3128@HTTP</td><td>218.25.172.18:3128@HTTP</td></tr><tr width=100%><td>210.21.235.78:3128@HTTP</td><td>61.179.12.213:3128@HTTP</td></tr><tr width=100%><td>211.157.104.16:8080@HTTP</td><td>61.233.144.118:3128@HTTP</td></tr><tr width=100%><td>202.111.183.141:80@HTTP</td><td>218.57.243.52:3128@HTTP</td></tr><tr width=100%><td>218.57.243.62:3128@HTTP</td><td>220.192.24.165:80@HTTP</td></tr><tr width=100%><td>218.29.23.179:8080@HTTP</td><td>218.57.243.50:3128@HTTP</td></tr><tr width=100%><td>210.21.227.199:8080@HTTP</td><td>61.236.113.43:3128@HTTP</td></tr><tr width=100%><td>221.10.201.150:8080@HTTP</td><td>218.4.84.218:80@HTTP</td></tr><tr width=100%><td>61.179.12.214:3128@HTTP</td><td>61.55.134.116:3128@HTTP</td></tr><tr width=100%><td>219.149.233.179:8080@HTTP</td><td>218.87.160.147:3128@HTTP</td></tr><tr width=100%><td>61.233.144.118:80@HTTP</td><td></td></tr></table></span> |
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发表于 2005-08-04 13:34
发表于 2009-10-17 19:19