readded udpated scripts directory

scripts/ow_v1.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+
+# overwrite: copy standard intput to output after EOF
+# version 1. BUG here
+
+PATH=/bin:/usr/bin
+
+case $# in
+1)      ;;
+*)      echo `Usage: overwrite file` 1>&2; exit 2
+esac
+
+new=/tmp/overwr.$$
+trap `rm -f $new; exit 1` 1 2 15
+
+cat >$new       # collect the input
+cp $new $1      # overwrite the input file
+rm -f $new
+
+# this file is used solely as a first example of how to think about
+# programming in the shell language.
+
+# cp is used instead of mv so the permissions and owner of the output file aren'the
+# changed if it already exist.
+# Appealingly simple as this version is, it has a fatal flaw: if the user types
+# DEL during the cp, the original input file will be ruined. We must prevent and
+# interrupt from stopping the overwriting of the input file. (see ow_v2.sh)