example

# This file must be sourced from bash
# You cannot run it directly
#
# This simple example adds /sbin to the user's path

deactivate_example () {
    # reset old environment variables
    if [ -n "${_OLD_EXAMPLE_PATH+set}" ] ; then
        export PATH="$_OLD_EXAMPLE_PATH"
        unset _OLD_EXAMPLE_PATH
    fi

    # This should detect bash and zsh, which have a hash command that must
    # be called to get it to forget past commands.  Without forgetting
    # past commands the $PATH changes we made may not be respected
    if [ -n "$BASH" -o -n "$ZSH_VERSION" ] ; then
        hash -r
    fi

    if [ -n "$_OLD_EXAMPLE_PS1" ] ; then
        export PS1="$_OLD_EXAMPLE_PS1"
        unset _OLD_EXAMPLE_PS1
    fi

    unset EXAMPLE_ENV
    if [ ! "$1" = "nondestructive" ] ; then
    # Self destruct!
        unset -f deactivate_example
    fi
}

# unset irrelavent variables
deactivate_example nondestructive

export EXAMPLE_ENV="example"

_OLD_EXAMPLE_PATH="$PATH"
export PATH="/sbin:$PATH"

if [ -z "$EXAMPLE_ENV_DISABLE_PROMPT" ] &&
   [ -z "$PATHIFY_DISABLE_PROMPT" ] ; then
    _OLD_EXAMPLE_PS1="$PS1"
    # Add env name before first non-whitespace PS1 char
    PS1=$(echo "$PS1" | sed -e '0,/\S/s//[example] &/')
    export PS1
fi

# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands.  Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "$BASH" -o -n "$ZSH_VERSION" ] ; then
    hash -r
fi