Linux kernel development

• [http://kernelnewbies.org/ kernelnewbies.org] the main kernelnewbies website

• [http://www.linuxfromscratch.org/ Linux From Scratch] detailed instructions on how to build your own Linux system entirely from source code

• [http://www.linuxfromscratch.org/hints/downloads/files/essential_prereading.txt Linux From Scratch - Essential Pre-Reading] more help for Linux From Scratch

• [http://kernelbook.sourceforge.net/wiki/?KernelWiki KernelWiki] (appears to be broken at the moment)

• LinuxMM Linux memory management wiki

• [http://linux-mm.org/HugePages] Huge pages wiki

• [http://linuxfs.pbwiki.com/] Filesystems wiki

• [http://linux-net.osdl.org/ Linux-Net] Linux networking wiki

• [http://lkml.org lkml.org] linux-kernel mailing list

• [http://kernel.org kernel.org] the home of the Linux kernel

• [http://kernel.org/doc kernel.org/doc] various documentation around the kernel

• [http://linux-news.net] linux distro news.

General Linux

• [http://tldp.org/LDP/abs/html/index.html Advanced Bash Scripting Guide]

• [http://www.regular-expressions.info/reference.html Regular Expressions Reference - Basic Syntax]

• [http://www.grymoire.com/Unix/Sed.html Sed - An Introduction and Tutorial]

• [http://www.pendrivelinux.com/ Boot and run Linux from a USB flash drive]

• [http://www.linuxlinks.com/ Linux Links]

• [http://freshmeat.net/ Freshmeat]

• [http://www.linuxcookbook.com/ Linux Cookbook - tips and hints]

• [http://www.gNewSense.org/ gNewSense] a distro based on Ubuntu with all the non-free parts removed

• [http://www.freesoftwaremagazine.com/ Free Software Magazine]

• [http://www.eiv.com/vim-cook.html Vim Cookbook]

• [http://thomer.com/vi/vi.html Vi Lovers Home Page]

• [http://vimdoc.sourceforge.net/htmldoc/version7.html Vim Documentation]

Security related

• [http://www.linuxsecurity.com/ Linux Security] detailed Linux security news site

News sites

• [http://www.lwn.net Linux Weekly News] - follow the kernel link (changes weekly) (the current kernel page is always http://lwn.net/current/kernel.php3).

• [http://www.kerneltrap.org/ Kerneltrap] - news on various free OS kernels

• [http://kerneltraffic.org Kernel Traffic] - a digest of what was discussed on the Linux-kernel mailing list (no longer maintained)

Other operating systems

• [http://wiki.dragonflybsd.org/index.php/DragonFly_Status DragonFly Status] "Changelog" of DragonFly's kernel (appears to be broken)