http://www.gnu.org/software/bash/manual/html_node/index.html
Coper - Advanced Bash-Scripting Guide
  http://tldp.org/LDP/abs/html/
  http://rus-linux.net/MyLDP/BOOKS/abs-guide/flat/abs-book.html

History:

!! - repeat previous command

Modifiers:

!!:gs/foo/bar - Runs previous command replacing foo by bar every time that foo appears 

http://www.gnu.org/software/bash/manual/html_node/Modifiers.html


!!! http://www.catonmat.net/blog/bash-one-liners-explained-part-five/

$ stty stop 'undef'





# Set the PS1 prompt (with colors).
# Based on http://www-128.ibm.com/developerworks/linux/library/l-tip-prompt/
# And http://networking.ringofsaturn.com/Unix/Bash-prompts.php .
PS1="\[\e[36;1m\]\h:\[\e[32;1m\]\w$ \[\e[0m\]"
 
# Avoid succesive duplicates in the bash command history.
export HISTCONTROL=ignoredups
 
# Append commands to the bash command history file (~/.bash_history)
# instead of overwriting it.
shopt -s histappend
 
# Append commands to the history every time a prompt is shown,
# instead of after closing the session.
PROMPT_COMMAND='history -a'