#!/bin/ksh
#Copy a file to the ~/public_html directory so it can be seen
#on the web.  Sample use: post filename.html

if [[ $# -ne 1 ]]
then
	echo $0: requires exactly one argument
	exit
fi

if [[ ! -f $1 ]]
then
	echo $0: there is no file named $1
	exit
fi

if [[ ! -r $1 ]]
then
	echo $0: you must have r permission for the file $1
	exit
fi

if [[ ! -d ~/public_html ]]
then
	echo $0: there is no directory named ~/public_html
	exit
fi

#$newfilename is the full pathname of the copy we will create in ~/public_html.
newfilename=~/public_html/${1##*/}   #Handout 4, pp. 3-4 for ##

if [[ -e $newfilename ]]
then
	echo $0: $newfilename already exists and I will not harm it
	exit
fi

chmod u+w ~/public_html	#Give cp permission to copy the file into ~/public_html.
cp $1 $newfilename
chmod 444 $newfilename               #r--r--r--
chmod a+rx ~ ~/public_html           #Turn on all three r's and all three x's.