.environment_bash

#!/bin/bash
# .environment_bash
# Ver v4.3 20170912 zot u1404 + vm
#   4.3 add paths for brew coreutils, mac X11 (opt)
#   4.2 make non-interactive exit rather than return
#   4.1 change variable setting to -v
#       add REM_HOST
# echo "*** environment_bash ***"

if [[ -v ENV_SET ]]; then
    if [[ -v PS1 ]]; then return 0; fi
    exit 0;
fi

export BIN_ARCH CDPATH CLASSPATH
export ENV_SET EXINIT HOST INFOPATH
export MANPATH USER
export TEXINPUTS BSTINPUTS BIBINPUTS

#
# if in via SSH, X pass through, Linux, and pidof available,
# find a DBUS_SESSION so we can start X programs and have them
# work.
#
gs_pid=
if [ -x /bin/pidof ]; then
    gs_pid=$(pidof gnome-session)
fi
if [[ -x /bin/pidof && ! -n $gs_pid ]]; then
    gs_pid=$(pidof x-session-manager)
fi
if [[ -n ${gs_pid} && -n ${SSH_CLIENT} && "x${OSNAME}" == "xLinux" ]]; then
    [[ -z ${SSH_AUTH_SOCK} ]] && export SSH_AUTH_SOCK=`cat /proc/$gs_pid/environ | tr '\0' '\n' | grep SSH_AUTH_SOCK | cut -d '=' -f2-`
    [[ -z ${DBUS_SESSION_BUS_ADDRESS} ]] && export DBUS_SESSION_BUS_ADDRESS=`cat /proc/$gs_pid/environ | tr '\0' '\n' | grep DBUS_SESSION_BUS_ADDRESS | cut -d '=' -f2-`
#   [[ -z ${XAUTHORITY} ]] && export XAUTHORITY=`cat /proc/$gs_pid/environ | tr '\0' '\n' | grep XAUTHORITY | cut -d '=' -f2-`
fi

# if host hasn't already been set, set it to the host (w/o domain)
if [[ ! -v HOST ]] ; then
    if [ -x /bin/hostname ]; then		# Linux/HP-UX/sunos4.x boxes
	hostnamecmd=/bin/hostname
    else
        hostnamecmd="uname -n"			# nodename
    fi
fi
HOST=${HOST:-`$hostnamecmd | sed -e 's/\\..*//'`}
unset hostnamecmd

if [[ ! -v REM_HOST ]]; then
    if [[ -v SSH_CLIENT ]]; then
        REM_HOST=`dig +short -x ${SSH_CLIENT%% *} | cut -d"." -f1`
    fi
fi

if [[ ! -v USER ]]; then
    USER=`id | sed -e 's/[^=]*=[0-9]*(\([^)]*\).*/\1/'`
fi

if [[ -x /bin/arch || -x /usr/bin/arch ]] ; then
    BIN_ARCH=${BIN_ARCH:-`arch`}
fi

pathset() {
    while [ $# -gt 0 -a ! -d "$1" ]; do shift ; done
    if [ $# -gt 0 ]; then
      if [ -d $1 ]; then t=$1; shift; fi
      for d in $*; do if [ -d $d ]; then t=$t:$d; fi; done
    fi
    echo $t
    unset d t
}

pathappend() {
    t=$1; shift; for d in $*; do if [ -d $d ]; then t=$t:$d; fi; done
    echo $t
    unset d t
}

pathprefix() {
    t=$1; shift; for d in $*; do if [ -d $d ]; then t=$t:$d; fi; done
    echo $t
    unset d t
}

PATH=`pathset $HOME/.bin/mspgcc/bin $HOME/.bin \
    /usr/gcc-arm-none-eabi-4_9-2015q3/bin \
    /usr/local/opt/coreutils/libexec/gnubin \
    /opt/X11/bin \
    /usr/local/bin /usr/local/sbin \
    /usr/bin /usr/sbin /bin /sbin `

MANPATH=`pathset \
    /usr/gcc-arm-none-eabi-4_9-2015q3/share/doc/gcc-arm-none-eabi/man \
    /usr/local/opt/coreutils/libexec/gnuman \
    /opt/X11/share/man \
    /usr/local/man /usr/local/share/man \
    /usr/man       /usr/share/man `

INFOPATH=`pathset ~/.emacs.d/info \
    /usr/gcc-arm-none-eabi-4_9-2015q3/share/doc/gcc-arm-none-eabi/info \
    /usr/local/info /usr/local/share/info \
    /usr/info       /usr/share/info `

export CDPATH=.:..:$HOME

export EXINIT='set aw ai ic nows sm'	# set vi (ex) options
export XENVIRONMENT='~/.Xdefaults'
if [ -x /usr/bin/less ]; then
    export PAGER=${PAGER:-/usr/bin/less}
fi

export RSYNC_RSH=ssh

# ensure that we don't need to reset the environment for any sub-shells
unset addsw addswman

if [ -r ~/.environment_bash.local ]; then . ~/.environment_bash.local; fi

ENV_SET=true