
       [Hint for Sun OS users:  use /usr/5bin/echo instead of
       /bin/echo or Csh's built-in echo.  Otherwise you'll have
       to embed literal ESC and BEL characters in the string
       instead of using convenient octal sequences.]

Bad idea. using /usr/5bin/echo is slower than the built-in echo.
This is what I do. It does execute `hostname` once per shell window,
and does read in one extra file. But manipluating the titles does not
require executing extra programs.

Oh yes, it does execute some programs once per each system. 
But it stores them in a file for the next time...


if ( ! $?HOSTNAME ) then
	setenv  HOSTNAME `hostname`
endif

# figure how how to generate escape, bell, 
# and echo commands without a a line terminator
# I may have done this before. If so, the variable E is set

# have I executed this script before on this system?
if ( $?E ) then
#	echo "already set the echo variables">/dev/tty
else if ( -f ~/.echo.${HOSTNAME} ) then
	source ~/.echo.${HOSTNAME}
else if ( `echo -n |wc -l`  == 0 ) then
#	echo "built in echo is bsd" >/dev/tty
	# then berkeley style echo
	echo 'set ech = "echo -n"' >~/.echo.${HOSTNAME}
	echo "set E = `echo a | tr a '\033'`" >> ~/.echo.${HOSTNAME}
	echo "set B = `echo a | tr a '\007'`" >> ~/.echo.${HOSTNAME}
	echo 'set N = ""' >> ~/.echo.${HOSTNAME}
	source ~/.echo.${HOSTNAME}
else 
#	echo "built in echo is sysV" >/dev/tty
	echo 'set ech = "echo"' >~/.echo.${HOSTNAME}
	echo 'set E = "\033"' >> ~/.echo.${HOSTNAME}
	echo 'set B = "\007"' >> ~/.echo.${HOSTNAME}
	echo 'set N = "\c"' >> ~/.echo.${HOSTNAME}
	source ~/.echo.${HOSTNAME}
endif	


# Are we using shelltool, cmdtool or xterm?
# duplicate these aliases here to avoid problems
if ( $term =~ sun* ) then
	# Sun Aliases
	alias Header '${ech}  "${E}]l\!:1${E}\${N}"'
	alias IHeader '${ech}  "${E}]L\!:1${E}\${N}"'
else if ( $term =~ xterm ) then
	alias Header '${ech}  "${E}]2;\!:1${B}${N}"'
	alias IHeader '${ech}  "${E}]1;\!:1${B}${N}"'
endif


