http://www-128.ibm.com/developerworks/cn/linux/
Linuxsir－非常不错的中文Linux社区，能学习到很多东西
http://www.linuxsir.com/bbs
Linuxfans－Linux公社，中文站点，国内非常出名http://www.linuxfans.org
Linuxeden－有许多Linux软件下载，更新较快http://www.linuxeden.com
Linux的新闻和文档http://www.linuxaid.com.cn
linux技术中坚站http://www.chinalinuxpub.com/
1.OS 站点 Redhat Linux http://www.redhat.com
Mandrake linux http://www.mandrakelinux.com
debian linux http://www.debian.org
slackware linux http://www.slackware.com
suse linux http://www.suse.com
FreeBSD http://www.freebsd.org
netbsd http://www.netbsd.org
openbsd http://www.openbsd.org
Solaris http://www.sun.com/solaris
2.www server:HTTP服务器 Apache http://www.apache.org
aol server http://www.aolserver.com
3.语言 PHP http://www.php.net Zend http://www.zend.com
Java http://www.javasoft.com
Python http://www.python.org Zope http://www.zope.org
Perl http://www.perl.org
Ruby http://www.ruby-lang.org/en
4.数据库:
MySQL http://www.mysql.com PostgreSQL http://www.postgresql.org
Oracle http://www.oracle.com
sap db http://www.sapdb.org
5.FTP服务器:
wu-ftpd http://www.wu-ftpd.org Proftpd http://www.proftpd.org
Pure-ftpd http://www.pureftpd.org
(如果http上不去-请试ftp://ftp.pureftpd.org)
ncftpd http://www.ncftpd.com
6.SMTP邮件服务器 :Sendmail http://www.sendmail.org
qmail http://www.qmail.org
Postfix http://www.postfix.org
Exim http://www.exim.org
POP3--qpopper http://www.qpopper.org
7.IMAP
Cyrus-IMAPD http://asg.web.cmu.edu/cyrus/imapd/ UW IMAP http://www.washington.edu/imap/
courierimap http://www.inter7.com/courierimap/
CVS--CVS www.cvshome.org http://www.linuxbyte.net http://www.netbarguide.com/OS/Unix/index_22.html http://www.linuxdiyf.com/ http://bbs.77169.org/mainframe.php?fid=185&tid=72693
学习手册 : http://man.lupaworld.com/