* get dot.mkshrc sample from Debian mksh-27.4-2

* sync dot.mkshrc sample with FreeWRT r383
* add some stuff from src/etc/profile and contrib/samples/etc_profile
* sync the latter two with reality and shorten
* teach the user in the mksh installation instructions to install the sample

NB: the sample is also covered by the MirOS licence

Build.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-# $MirOS: src/bin/mksh/Build.sh,v 1.32 2006/07/03 12:17:08 tg Exp $
+# $MirOS: src/bin/mksh/Build.sh,v 1.33 2006/07/23 18:44:22 tg Exp $
 #-
 # This script recognises CC, CFLAGS, CPPFLAGS, LDFLAGS, LIBS and NROFF.
 
@@ -93,6 +93,7 @@ $e
 $e Installing mirbsdksh:
 $e "# install -c -s -o root -g bin -m 555 mksh /bin/mksh"
 $e "# fgrep -qx /bin/mksh /etc/shells || echo /bin/mksh >>/etc/shells"
+$e "# install -c -o root -g bin -m 444 dot.mkshrc /usr/share/doc/mksh/examples/"
 $e
 $e Installing the manual:
 if test -s mksh.cat1; then

dot.mkshrc

@@ -0,0 +1,36 @@
+# $MirOS: src/bin/mksh/dot.mkshrc,v 1.1 2006/07/23 18:44:22 tg Exp $
+
+: ${HOSTNAME:=$(hostname -s 2>/dev/null || hostname)}
+PS1='$(((rv=$?)) && print $rv\|)${USER:=$(id -un)}@${HOSTNAME:=nil}:$(
+	local pfx=~ wd=${PWD:-$(pwd)}
+	[[ ${wd#$pfx} = $wd || $pfx = ?(/) ]] || wd=\~${wd#$pfx}
+	pfx=; let n="( (n = ${COLUMNS:-80} / 3) < 7 ? 7 : n)"
+	while (( (${#pfx} + ${#wd}) > n )); do
+		if [[ $wd = */* ]]; then
+			pfx=.../
+			wd="${wd#*/}"
+		else
+			pfx=...
+			wd="${wd#?????}"
+		fi
+	done
+	print -r -- "$pfx$wd")'" $(if (( $(id -u) )); then
+		print \$; else print \#; fi) "
+: ${EDITOR:=/bin/ed}
+export EDITOR HOSTNAME PS1 USER
+
+alias l='/bin/ls -F'
+alias la='l -a'
+alias ll='l -l'
+alias lo='la -lo'
+
+function Lstripcom		# strip comments from file
+{
+	local _line
+	set -o noglob
+	cat "$@" | while read _line; do
+		_line=${_line%%#*}
+		[[ -n $_line ]] && print -r -- $_line
+	done
+	set +o noglob
+}