1. 脚本语言

Perl语言入门(中文第五版).pdf
Tcl-Tk入门经典（第2版）.pdf
Python编程：从入门到实践.pdf
The Ruby Programming Language (O'Reilly 2008).pdf

2. shell

2.1 bash

菜鸟教程
http://www.runoob.com/linux/linux-shell.html
IBM Bash实例教程
https://www.ibm.com/developerworks/cn/linux/shell/bash/bash-1/index.html
https://www.ibm.com/developerworks/cn/linux/shell/bash/bash-2/index.html
https://www.ibm.com/developerworks/cn/linux/shell/bash/bash-3/index.html
PCWDLD
https://www.pcwdld.com/bash-cheat-sheet
GNU Bash官方参考手册
http://www.gnu.org/software/bash/manual/bash.html

2.2 tcsh

IBM Tcsh shell变量
https://www.ibm.com/developerworks/cn/aix/library/au-tcsh/index.html
tcsh - unix, linux command
http://www.tutorialspoint.com/unix_commands/tcsh.htm
杜克大学的一篇c shell教程
https://www2.cs.duke.edu/csl/docs/csh.html
grymoire
https://www.grymoire.com/Unix/Csh.html
Top Ten reasons not to use the C shell
https://www.grymoire.com/Unix/CshTop10.txt

3. makefile

bootwiki.com
https://bootwiki.com/makefile/makefile-tutorial.html
跟我一起写Makefile
https://seisman.github.io/how-to-write-makefile/index.html
makefile简明教程
https://www.zhaixue.cc/makefile/makefile-intro.html

4. vim

vim help files
quick reference
user manual toc
reference toc
vimscript编程参考
vim正则（知乎）

5. emacs

GNU Emacs manual
An Introduction to Programming in Emacs Lisp
Emacs Lisp Reference Manual
Other Emacs manuals
Emacs Lisp 简明教程（水木社区版）
gnu elisp参考手册 29.2 pdf

6. 其他

mako模板语法参考
jinja2模板语法参考