.shrc

#!/bin/sh

# A few defaults:
set +u
HOSTNAME=`uname -n`
PS1="[${LOGNAME}@\${HOSTNAME} \${PWD}]\# "
PATH=/sbin:/usr/sbin:$PATH
MAIL=/var/mail/root
EDITOR=/usr/bin/vi
HISTFILE=$HOME/.history
HISTSIZE=500

export HOSTNAME PS1 PATH MAIL EDITOR HISTFILE HISTSIZE

# Skip remaining setup if shell non-interactive:
[[ -o interactive ]] || return 0


# Turn on command line editing mode:
set -o emacs

# Short hand aliases:
alias m=more h=history  ll='ls -l' j=jobs  p=print

# Set positional parameters to corresponding code values (${27} = \033 = ESC):
typeset -i8 _i=8#40
while ((_i -= 1))
	do set -- "$(print -n \\0${_i#8?})" ${@+"$@"}
done

# Set up cursor and function keys on ksh88 or posix sh:
# alias keymap emacs keyboard          command
# __D   \E[D   ^B    left arrow        move cursor left
# __C   \E[C   ^F    right arrow       move cursor right
# __A   \E[A   ^P    up arrow          previous history entry
# __B   \E[B   ^N    down arrow        next     history entry
# __5~  \E[5   M-b   prev              move cursor back    one word
# __6~  \E[6   M-f   next              move cursor forward one word
# __3~  \E[2         insert            repeat previous argument
#       ^?     ^D    delete            delete current character
# __H          ^A    home              move cursor to start of line

#     up         down       right   left    prev             next
alias __A=${16}  __B=${14}  __C=$6  __D=$2  __5=${27}b${29}  __6=${27}f${29}

#     insert char                                          home
alias __3="${27}b${27}f${27} ${27}${29} ${27}p${25}${29}"  __H=$1

# Clean up:
shift 8#40-1
unset _i