/etc/bash.bashrc

https://wiki.archlinux.org/index.php/Color_Bash_Prompt

This file is sourced by all interactive bash shells on startup,

including some apparently interactive shells such as scp and rcp

that can't tolerate any output. So make sure this doesn't display

anything or bad things will happen !

Test for an interactive shell. There is no need to set anything

past this point for scp and rcp, and it's important to refrain from

outputting anything in those cases.

If not running interactively, don't do anything!

[[ $- != i ]] && return

Bash won't get SIGWINCH if another process is in the foreground.

Enable checkwinsize so that bash will check the terminal size when

it regains control.

http://cnswww.cns.cwru.edu/~chet/bash/FAQ (E11)

shopt -s checkwinsize

Enable history appending instead of overwriting.

shopt -s histappend

case ${TERM} in

xterm*|rxvt*|Eterm|aterm|kterm|gnome*)
    PROMPT_COMMAND=${PROMPT_COMMAND:+$PROMPT_COMMAND; }'printf "\033]0;%s@%s:%s\007" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/~}"'
    ;;
screen)
    PROMPT_COMMAND=${PROMPT_COMMAND:+$PROMPT_COMMAND; }'printf "\033_%s@%s:%s\033\\" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/~}"'
    ;;

esac

fortune is a simple program that displays a pseudorandom message

from a database of quotations at logon and/or logout.

Type: "pacman -S fortune-mod" to install it, then uncomment the

following line:

[[ "$PS1" ]] && /usr/bin/fortune

Set colorful PS1 only on colorful terminals.

dircolors --print-database uses its own built-in database

instead of using /etc/DIR_COLORS. Try to use the external file

first to take advantage of user additions. Use internal bash

globbing instead of external grep binary.

sanitize TERM:

safe_term=${TERM//[^[:alnum:]]/?} match_lhs=""

[[ -f ~/.dir_colors ]] && match_lhs="${match_lhs}$(<~/.dir_colors)" [[ -f /etc/DIR_COLORS ]] && match_lhs="${match_lhs}$(</etc/DIR_COLORS)" [[ -z ${match_lhs} ]] \

&& type -P dircolors >/dev/null \
&& match_lhs=$(dircolors --print-database)

if [[ $'\n'${match_lhs} == $'\n'"TERM "${safe_term} ]] ; then

# we have colors :-)

# Enable colors for ls, etc. Prefer ~/.dir_colors
if type -P dircolors >/dev/null ; then
    if [[ -f ~/.dir_colors ]] ; then
        eval $(dircolors -b ~/.dir_colors)
    elif [[ -f /etc/DIR_COLORS ]] ; then
        eval $(dircolors -b /etc/DIR_COLORS)
    fi
fi

PS1="$(if [[ ${EUID} == 0 ]]; then echo '\[\033[01;31m\]\h'; else echo '\[\033[01;32m\]\u@\h'; fi)\[\033[01;34m\] \w \$([[ \$? != 0 ]] && echo \"\[\033[01;31m\]:(\[\033[01;34m\] \")\\$\[\033[00m\] "

# Use this other PS1 string if you want \W for root and \w for all other users:
# PS1="$(if [[ ${EUID} == 0 ]]; then echo '\[\033[01;31m\]\h\[\033[01;34m\] \W'; else echo '\[\033[01;32m\]\u@\h\[\033[01;34m\] \w'; fi) \$([[ \$? != 0 ]] && echo \"\[\033[01;31m\]:(\[\033[01;34m\] \")\\$\[\033[00m\] "

alias ls="ls --color=auto"
alias dir="dir --color=auto"
alias grep="grep --color=auto"
alias dmesg='dmesg --color'

# Uncomment the "Color" line in /etc/pacman.conf instead of uncommenting the following line...!

# alias pacman="pacman --color=auto"

else

# show root@ when we do not have colors

PS1="\u@\h \w \$([[ \$? != 0 ]] && echo \":( \")\$ "

# Use this other PS1 string if you want \W for root and \w for all other users:
# PS1="\u@\h $(if [[ ${EUID} == 0 ]]; then echo '\W'; else echo '\w'; fi) \$([[ \$? != 0 ]] && echo \":( \")\$ "

PS2="> " PS3="> " PS4="+ "

Try to keep environment pollution down, EPA loves us.

unset safe_term match_lhs

Try to enable the auto-completion (type: "pacman -S bash-completion" to install it).

[ -r /usr/share/bash-completion/bash_completion ] && . /usr/share/bash-completion/bash_completion

Try to enable the "Command not found" hook ("pacman -S pkgfile" to install it).

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