bashrc

# ~/.bashrc: executed by bash(1) for non-login shells.

# /etc/skel/.bashrc
#
# 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 [[ $- != *i* ]] ; then
	# Shell is non-interactive.  Be done now!
	return
fi

# 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.  #65623
# http://cnswww.cns.cwru.edu/~chet/bash/FAQ (E11)
shopt -s checkwinsize

# Enable history appending instead of overwriting.  #139609
shopt -s histappend

# don't put duplicate lines in the history. See bash(1) for more options
# ... or force ignoredups and ignorespace
HISTCONTROL=ignoredups:ignorespace

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTSIZE=5000
HISTFILE=
HISTFILESIZE=0

# Change the window title of X terminals
case ${TERM} in
	xterm*|rxvt*|Eterm*|aterm|kterm|gnome*|interix|konsole*)
		PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/~}\007"'
		;;
	screen*)
		PROMPT_COMMAND='echo -ne "\033_${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/~}\033\\"'
		;;
esac

use_color=false

# 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.
safe_term=${TERM//[^[:alnum:]]/?}   # sanitize TERM
match_lhs=""
[[ -f ~/.dir_colors   ]] && match_lhs="${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)
[[ $'\n'${match_lhs} == *$'\n'"TERM "${safe_term}* ]] && use_color=true

if ${use_color} ; then
	# Enable colors for ls, etc.  Prefer ~/.dir_colors #64489
	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

	if [[ ${EUID} == 0 ]] ; then
		PS1='\n[\[\e[1;31m\]\u@\h\[\e[1;34m\] \w\[\e[0m\]] Err:$?\n# '
	else
		PS1='\n[\[\e[1;31m\]\u@\h\[\e[1;34m\] \w\[\e[0m\]] Err:$?\n$ '
	fi

	# `ls' to be colorized:
	export LS_OPTIONS='--color=auto'
	alias ls='ls $LS_OPTIONS'
	alias ll='ls $LS_OPTIONS -laF'
	alias la='ls $LS_OPTIONS -A'
	alias l='ls $LS_OPTIONS -lA'

	alias grep='grep --colour=auto'
	alias egrep='egrep --colour=auto'
	alias fgrep='fgrep --colour=auto'
else
	if [[ ${EUID} == 0 ]] ; then
		# show root@ when we don't have colors
		PS1='\u@\h \w \# '
	else
		PS1='\u@\h \w \$ '
	fi

	export LS_OPTIONS=''
	alias ll='ls $LS_OPTIONS -laF'
	alias la='ls $LS_OPTIONS -A'
	alias l='ls $LS_OPTIONS -lA'
fi

# Try to keep environment pollution down, EPA loves us.
unset use_color safe_term match_lhs

# Note: PS1 and umask are already set in /etc/profile. You should not
# need this unless you want different defaults for root.
umask 077

# Some more alias to avoid making mistakes:
# alias rm='rm -i'
# alias cp='cp -i'
# alias mv='mv -i'

# MySQL history file
MYSQL_HISTFILE=/dev/null