12-12-2007
traceroute might be shut out by the firewall, even a modest "ping -R" i have already seen being blocked by a firewall. But if you have *some* possible mode of connection you can use that to determine if the host is up. If this mode of connection is ssh, then use "ssh host date" or something such and analyze the output you get. A valid date would mean the host is up, if you get back nothing you can conclude the host is down.
What you really use for this purpose depends on what you are allowed to do on the remote host but i think the idea is clear.
bakunin
10 More Discussions You Might Find Interesting
1. Programming
Hi !
Please tell me how to get radio buttons, text boxes , check boxes , option buttons , pull down menus in C++ on Unix.
I think it would be done using curses.h ..but that's all i know.
TIA,
Devyani. (3 Replies)
Discussion started by: devy8
3 Replies
2. UNIX for Advanced & Expert Users
hi All
my Redhat Linux server stopped responding to pings all together. and am also not able to ping out of the box. There are however no issues with internet connectivity and my application is working fine. When I tried to ping another machine (Win98) i could see the pings coming from my... (2 Replies)
Discussion started by: skotapal
2 Replies
3. AIX
Hey all. I have a long list of IP addresses I want to ping. The IP's are located in a flat file "ping_info.dat".
I was wondering what the best way to go about this would be. Can someone help me out? (2 Replies)
Discussion started by: jalge2
2 Replies
4. Shell Programming and Scripting
Hi,
How to ping an ip from an unix machine. Can you please let me know the exact command. I used and i got the below error
ping 171.18.17.2
bash: ping: command not found
Thanks n regards
Ammu (1 Reply)
Discussion started by: ammu
1 Replies
5. Shell Programming and Scripting
Keep in mind that I haven't done Perl scripting for a LONG time, so I'm quite rusty.
This is what I would like to do:
- using fork, create 3 or 4 processes to read 3 or 4 different text documents containing server names or IP addresses
- in each of those processes, Perl will ping each of those... (7 Replies)
Discussion started by: kooshi
7 Replies
6. Solaris
Dear all,
I face some problem as below.
I have a sun fire 280r server in a network. From that server i am able to ping any system in any network. But i am facing the problem when i try to ping the server from outside netwok. Once i give ping command in the server then only i try to... (1 Reply)
Discussion started by: sudhansu
1 Replies
7. Shell Programming and Scripting
how can you ping a domain and store the ip?
like given a url in a variable $url
how can i ping it?
also how can i find the local server's ip address on a cpanel server?
(i have multiple servers and didnt want to hard code it in)
(basically i want to check the domain accounts on the server,... (11 Replies)
Discussion started by: vanessafan99
11 Replies
8. IP Networking
Hi,
I have a rather strange IP question...
Here's my problem:
I have a Linux box (call it "turing") with 2 NICs.
One network interface (eth0) has an IP assigned, say 192.168.42.50.
The other interface (eth1) is up, but has no IP yet.
My question: is it possible to determine from... (3 Replies)
Discussion started by: NH2
3 Replies
9. UNIX Desktop Questions & Answers
I need to ping websites and I need to see which one has the highest delay.
My problem is I need to extract the name Facebook and the time=74.0 ms using awk. I need help doing this please...
PING facebook.com (173.252.90.36) 56(84) bytes of data.
64 bytes from... (5 Replies)
Discussion started by: 5sku5
5 Replies
10. Emergency UNIX and Linux Support
Hi,
I need to set up a script that would write the results of the ping command from one AIX server to another file may be every minute. Like this I need to gather the data for a period of 24 hours.
Can someone please help me with this?
G (5 Replies)
Discussion started by: ggayathri
5 Replies
LEARN ABOUT LINUX
initctl2dot
initctl2dot(8) System Manager's Manual initctl2dot(8)
NAME
initctl2dot - manual page for initctl2dot
SYNOPSIS
initctl2dot [OPTIONS]
DESCRIPTION
Convert initctl(8) output to GraphViz dot(1) format.
With no options, initctl(8) will be invoked automatically and the output written to file upstart.dot.
OPTIONS
-h Display usage statement.
-f INFILE , --infile=INFILE
File to read initctl(8) output from ("initctl show-config -e"). If not specified, initctl(8) will be run automatically.
-w OUTFILE , --outfile=OUTFILE
File to write output to.
-r RESTRICTIONS , --restrict-to-jobs=RESTRICTIONS
Limit display of start on and stop on conditions to comma-separated list of jobs.
--color-emits=COLOR_EMITS
Specify color for 'emits' lines.
--color-start-on=COLOR_START_ON
Specify color for 'start on' lines.
--color-stop-on=COLOR_STOP_ON
Specify color for 'stop on' lines.
--color-event=COLOR_EVENT
Specify color for event boxes.
--color-text=COLOR_TEXT
Specify color for summary text.
--color-bg=COLOR_BG
Specify background color for diagram.
--color-event-text=COLOR_EVENT_TEXT
Specify color for text in event boxes.
--color-job-text=COLOR_JOB_TEXT
Specify color for text in job boxes.
--color-job=COLOR_JOB
Specify color for job boxes.
AUTHOR
Written by James Hunt <james.hunt@ubuntu.com>
REPORTING BUGS
Report bugs at <https://launchpad.net/upstart/+bugs>
COPYRIGHT
Copyright (C) 2011 Canonical Ltd.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
SEE ALSO
init(8) initctl(8)
Upstart 2011-03-07 initctl2dot(8)