1、如何判断主动模式,还是被动模式ftp
随便输入一个ftp下的命令，提示“Passive mode refused”。是被动模式

2、在VI里如何把一个字符串替换为回车\n ???　　
:%s/string/^M/g
Note:
  ^M is fist ^V ,then ^M.

3、elxl是什么网卡？　
3com is elxl
Intel is fxp  

4、/bin/sh和/sbin/sh有何不同？
没有，只是在单用户模式下系统的动态链接库还无法使用，因此root用户的shell编译成静态链接就很有必要。

5、能不能为Acrobat4.0 for x86加中文字体？
下载。acro*  5.0,另外打开它的安装包后，里面有一文件，告诉你下载字体的方法。

6、 u should not use root account for anything except installation
coz 1) root (/) partition suually is quite small. the reason for small / partition is that you can spot any CRITICAL problems for the SYSTEM very fast.
2) u should be always very cautions to do anything at / so that you know what is happning to the /.
3) abusing / account could cause potential catastrophe for the whole system. Keep the / safe is basic and #1 step a system admin should learn.
4) regualr user accounts reside at different partition from / partition. if you screwed up the regular user account, even that partition, u can always recover from it. but i u screwed the / partition, onlything you can do besides reinstalling the system (not to mention u will lose everything on the disk) is to call allaha.
5) last? make ur boss happy..:-). u can show this to ur boss:"hey, boss, i truely know the basics of UNIX"...

7、mount时出现错误
solaris2.6
RPC :program not regestered
要这样手工启动
# /usr/lib/nfs/mountd
# /usr/lib/nfs/nfsd -a 16
# share <dir>      (共享你的目录)
# dfshares         (查看共享情况)