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Top Forums Shell Programming and Scripting Linux: Writing a tricky script to check connectivity Post 302283668 by unSpawn on Tuesday 3rd of February 2009 08:04:53 PM
Old 02-03-2009
...and if this Motorola Surfboard has stats you can reach over SNMP or HTTP you wouldn't need to ping until you're sure it's not a problem between you and wherever it terminates on the ISP side. Think layers of dependencies. A more elaborate check then could look something like: machine -> LAN (cabling, link, router), machine -> modem (modem down, ISP), machine -> 1st hop router (routing, ISP), machine -> ping somewhere (or tcptrace in case remote doesn't like ICMP).

Here's some Bash scripting guides that may help:
BASH Programming - Introduction HOW-TO
Bash Guide for Beginners
Advanced Bash-Scripting Guide

Try some and post here as it's more efficient to correct your work, IMHO.
 

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Ns_Url(3aolserver)					   AOLserver Library Procedures 					Ns_Url(3aolserver)

__________________________________________________________________________________________________________________________________________________

NAME
Ns_AbsoluteUrl, Ns_ParseUrl, Ns_RelativeUrl, Ns_SkipUrl - URL manipulation routines SYNOPSIS
#include "ns.h" int Ns_AbsoluteUrl(Ns_DString *pds, char *url, char *baseurl) int Ns_ParseUrl(char *url, char **pprotocol, char **phost, char **pport, char **ppath, char **ptail) char * Ns_RelativeUrl(char *url, char *location) char * Ns_SkipUrl(Ns_Request *request, int n) _________________________________________________________________ DESCRIPTION
Ns_AbsoluteUrl(pds, url, baseurl) Construct an URL based on baseurl but with as many parts of the incomplete url as possible. Return NS_OK or NS_ERROR. Ns_ParseUrl(url, pprotocol, phost, pport, ppath, ptail) Parse a URL into its component parts. Pointers to the protocol, host, port, path, and "tail" (last path element) will be set by ref- erence in the passed-in pointers. The passed-in url will be modified. Ns_RelativeUrl(url, location) If the url passed in is for this server, then the initial part of the URL is stripped off. e.g., on a server whose location is http://www.foo.com, Ns_RelativeUrl of "http://www.foo.com/hello" will return "/hello". Returns a pointer to the beginning of the relative url in the passed-in url, or NULL if error. Will set errno on error. Ns_SkipUrl(request, n) Return a pointer n elements into the request's url. SEE ALSO
nsd(1), info(n) KEYWORDS
AOLserver 4.0 Ns_Url(3aolserver)
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