Path: utzoo!utgpu!watserv1!watmath!att!linac!uwm.edu!spool.mu.edu!samsung!umich!sharkey!cfctech!rphroy!trux!car
From: car@trux.UUCP (Chris Rende)
Newsgroups: comp.protocols.tcp-ip
Subject: Testing if a host is up
Message-ID: <529@trux.UUCP>
Date: 15 Feb 91 18:34:50 GMT
Organization: Central Cartage, Sterling Hgts., MI
Lines: 31

I have a shell script which does a FTP of a file over to another host.

I need a way to put a test ahead of the FTP that will determine whether
or not the other host is "up".

Here is what I have so far:

--------------------------------------------------------------------
# hostup - Written 01/30/91 by Chris Rende
# Last change: 01/30/91 by Chris Rende

x=`ping HOST 56 1 | fgrep packets | cut -c24`

if [ $x = 0 ]; then
	echo "HOST is down"
	exit 1
fi

echo "HOST is up"
exit 0
--------------------------------------------------------------------

Is there a better way? (I.e., more robust, less kludgy).
C program(s) welcome.

car.
-- 
Christopher A. Rende           Central Cartage (Nixdorf/Pyramid/SysVR2/BSD4.3)
uunet!edsews!rphroy!trux!car   Multics,DTSS,Unix,Shortwave,Scanners,UnixPC/3B1
trux!car@uunet.uu.net          Minix 1.2,PC/XT,Mac+,TRS-80 Model I,1802 ELF
trux!ramecs!car     "I don't ever remember forgetting anything." - Chris Rende