#
#       Default startup file for the Korn shell
#
# following are variables used by ksh that may be customized
#
#CDPATH=                # search path for 'cd'
#COLUMNS=80             # columns on the terminal
EDITOR=$(whence vi)     # enable command line editing using the vi editor
#ENV=$HOME/.kshrc       # environment file (see $HOME/.profile)
#FCEDIT=ed              # editor for 'fc' built-in
#FPATH=                 # search path for auto-load functions
#HISTFILE=$HOME/.sh_history     # history file
#HISTSIZE=128           # number of history commands
#HOME=/home/$LOGNAME    # home directory
#IFS=:                  # internal field separator
#LINES=24               # number of lines on the terminal
#MAIL=                  # name of mail file (set $HOME/.profile)
#MAILCHECK=600          # frequency of mail check
#MAILPATH=              # list of mail files
#PATH=                  # path search directories (see $HOME/.profile)
PS1='$PWD # '           # set prompt string to the current directory name
#PS2=">"                # secondary prompt string
#PS3="#?"               # select command prompt
#PS4="+"                # debug prompt string
#SHELL=/usr/bin/ksh     # pathname of the shell
#TERM=                  # terminal type (see $HOME/.profile)
#TMOUT=0                # timeout variable
#VISUAL=                # override for $EDITOR

#
#  Aliases
alias Mail='mailx '
alias mail='mailx '
alias print=/bin/print
alias ls='/bin/ls -aF '
alias ll='/bin/ls -Fail '
#alias m='less -mesp'
alias m='more'
alias j='jobs -l'
alias s='fg %-'
alias maek=make

#
# directory stack aliases

alias pd='pushd'
alias po='popd'
alias dirs='prcdstack'
alias d='prcdstack'

#
# Functions
#
function term {
if [ $# -eq 1 ]
then
        echo $TERM
        TERM=$1
        export TERM
fi
echo $TERM
}
function display {
if [ $# -eq 1 ]
then
        echo $DISPLAY
        DISPLAY=$1
        export DISPLAY
fi
echo $DISPLAY
}

# Set up variables needed for pushd/popd
integer cdindex
let cdindex=${cdindex:=0}
BASE=${BASE:=""}

# print out the cd stack
function prcdstack  {
        # make sure any cd's done by user are updated on the stack
        cdstack[cdindex]=`pwd`
        i=$cdindex
        while (( i>=0 )); do
                if [ "${cdstack[$i]#$HOME}" != ${cdstack[$i]} ]; then
                        echo "~${cdstack[$i]#$HOME}\c"
                elif [ "${cdstack[$i]#$BASE}" != ${cdstack[$i]} ]; then
                        echo "\$BASE${cdstack[$i]#$BASE}\c"
                else echo "${cdstack[$i]}\c"
                fi
                if [ $i -gt 0 ]; then   # output a space
                        echo " \c"
                else
                        echo "\n\c"     #output a newline
                fi
                let i=i-1
        done
        return;
}

function pushd  {
        if [ $# -gt 1 ]; then
                echo "pushd: Too many arguments"
                return 1;
        fi
        # make sure any cd's done by user are updated on the stack
        cdstack[cdindex]=`pwd`
        if [ $# -eq 0 ]; then           # no arg to pushd - swap top 2 dirs
                if [ cdindex -eq 0 ]; then      # not enough dirs to swap
                        echo "No other directory"
                        return 1;
                fi
                # else swap top 2 dirs
                cd ${cdstack[$cdindex-1]}
                if [ $? -eq 0 ]; then           # cd succeeded
                        cdtmp=${cdstack[$cdindex]}
                        cdstack[$cdindex]=${cdstack[$cdindex-1]}
                        cdstack[$cdindex-1]=$cdtmp
                        prcdstack
                fi
        else                            # cd to new dir and push onto stack
                cd $1
                if [ $? -eq 0 ]; then           # cd succeeded
                        if [ cdindex -eq 0 ]; then      # cdstack is empty
                                cdstack[0]=$OLDPWD
                                cdstack[1]=`pwd`
                                let cdindex=1
                        else
                                cdstack[cdindex+1]=`pwd`
                                let cdindex=cdindex+1
                        fi
                        prcdstack
                fi
        fi
        return;
}

function popd  {
        if [ cdindex -eq 0 ]; then      # cdstack is empty
                echo "popd: Directory stack empty"
                return 1;
        fi
        # make sure any cd's done by user are updated on the stack
        cdstack[cdindex]=`pwd`
        cd ${cdstack[$cdindex-1]}
        if [ $? -eq 0 ]; then           # cd succeeded
                let cdindex=cdindex-1
                prcdstack
        fi
}