dot.bashrc

#
# ~/.bashrc
#

# Use this file only for interactive shell
case "$-" in ( *i* ) ;; ( * ) return ;; esac
# Prevent from repeatedly sourcing from .profile
test -n "${_rcsourced}" && test -n "${_inprofile}" && return

# Determine shell
if   test -n "${BASH_VERSION}" ; then
    _sh=bash
elif test -n "${KSH_VERSION}" ; then
    _sh=ksh93
elif test -n "${FCEDIT}" ; then
    _sh=ksh
else
    _sh=sh
fi

# Get operating system name
_os="$(uname -s)"

# Set some shell variables if not set
test -n "${UID}"  || UID="$(id -ur)"
test -n "${EUID}" || EUID="$(id -u)"
test -n "${USER}" || USER="$(id -un)"
test -n "${HOST}" || HOST="$(hostname)"

# Set shell options
case "${_sh}" in
    ( ksh* )
	set -o vi
	set -o viraw
	case "$(set -o)" in ( *multiline* ) set -o multiline ;; esac
	;;
esac

# History options
HISTSIZE=1000
case "$(set -o)" in ( *histexpand* ) set -o histexpand ;; esac
case "${_sh}" in
    ( bash* )
	shopt -s histappend
	HISTCONTROL=ignoreboth
	HISTTIMEFORMAT="%F %T %Z  "
	;;
esac

# Set timeout for root
if test "${EUID}" -eq 0 ; then
    TMOUT=7200
fi

# Set prompt
case "${_sh}" in
    ( bash* )
	PS1='[\A] \u@\h:\w\$ ' ;;
    ( ksh* )
	PS1='${USER}@${HOST}:${PWD}> '
	test "${_sh}" = "ksh93" && PS1="(\$(date +%H:%M)) ${PS1}"
	;;
esac

# Colorize prompt
if test -n "${TERM}" && test -t 0 ; then
    _off="$(tput sgr0 2>/dev/null)"		# Turn off
    _bold="$(tput bold 2>/dev/null)"		# Bold
    _colu="$(tput setaf 4 2>/dev/null)"		# Blue
    _colr="$(tput setaf 1 2>/dev/null)"		# Red
    if test -z "${_colu}" ; then
	# setaf capability is not set, try setf instead
	_colu="$(tput setf 1 2>/dev/null)"	# Blue
	_colr="$(tput setf 4 2>/dev/null)"	# Red
    fi
    if test "${EUID}" -eq 0 ; then
	# For root user
	_on="${_bold}${_colr}"
    else
	# For ordinary user
	case "${_os}" in
	    ( AIX* )   _on="${_bold}" ;;	# Only bold for AIX
	    ( Linux* ) _on="${_bold}${_colu}" ;;
	esac
    fi
    if test -n "${_on}" && test -n "${_off}" ; then
	case "${_sh}" in
	    ( bash* )
		PS1="\[${_on}\]${PS1% }\[${_off}\] "
		test -n "${PS2}" && PS2="\[${_on}\]${PS2% }\[${_off}\] "
		;;
	    ( ksh*  )
		PS1="${_on}${PS1% }${_off} "
		test -n "${PS2}" && PS2="${_on}${PS2% }${_off} "
		;;
	esac
    fi
    unset _bold _colu _colr _on _off
fi

# Source aliases and functions if they exist
for _f in ${HOME}/.alias ${HOME}/.aliases ${HOME}/.functions ; do
    test -f "${_f}" && . "${_f}" || true
done
unset _f
unset _sh _os

# Set sourced flag
_rcsourced="true"