VPN 的安全性如何\r\n 开通一条从省府到地级市的线路分门别类的开销大概是多少\r\n 大概需要什么设备呢\r\n 还有什么好的替代方法没有呢\r\n\r\n附:我们的线路只要求能够安全性第一,而且呢要实时,数据流量可能并不是很大,而且尽可能便宜(为人民省钱)。
[code]#more file 123 456 789 789 abc def #sed -e '/./{H;$!d;}' -e 'x;/abc/!d;' file 789 abc def[/code]这是sed one-liner中的一道题,目的是得到含有abc的一段,段落之间用空行分隔。 '/./{H;$!d;}'的作用是把一段文本保存在缓冲区内,'x;/abc/!d;'的作用是把缓冲区的内容转给模式空间,然后查询是否包含abc,如果包含则打印出来。 我的问题是: 为什么sed会等到'/./{H;$!d;}'把一整段的内容读完后再执行'x;/abc/!d;'这两个...
The following are the best DHCP resources I have found. Most of these are specific to Road Runner cable service but should be applicable to any cable service. Please tell me about any other DHCP resources you find. I would recommend the FreeBSD link below over what I've done. I think that article does a better job of documenting what needs to be done. My stuff is spread over several documen...
./vadddomain 的 时候出错,在线等,求教 [root@mail bin]# ./vadddomain sesi.ecnu.edu.cn Please enter password for postmaster: enter password again: Passwords do not match, try again Please enter password for postmaster: enter password again: could not connect to mysql update server Access denied for user: 'vpopmail@mail.sei.ecnu.edu.cn' (Using password: YES) with database could not connect to m...