I still haven't had chance to read the entire Debian manual, which I promise I will do as soon as I can, and I will start putting info back into this forum.
However, for the mean time, could someone please help with a small script? I understand what I've got to do and how to do it, but I'm struggling with getting the syntax right.
I have a loads of nodes I need to connect to from time to time, but I'm never sure if they're alive. So instead of ssh'ing and waiting ages to either get a connection, or not, I'd sooner start with a ping, if there is a good response, set off the ssh. At this point I might have 10 terminal sessions open for different nodes, so I want to automate as much as possible.
I've actually had some time to look into this today, and with 'some help' from google I think I have it sorted out. Or will when I get the wrong lines right!
While I'm at it, could someone please explain why:
but-
gives no output? Or at least an empty line. Do I need to present the variable in brackets or quotes? I've tried every combination that makes sense from examples in help topics.
Thanks.
------ Post updated at 05:22 PM ------
Thanks folks so far...
Corona688, that certainly helps me set the flag.
RudiC, -o ConnectTimeout doesn't appear to be part of this branch of Debian.
Last edited by rbatte1; 11-28-2018 at 01:52 PM..
Reason: Added CODE tags
I've actually had some time to look into this today, and with 'some help' from google I think I have it sorted out. Or will when I get the wrong lines right!
While I'm at it, could someone please explain why:
but-
gives no output?
A pipe | captures the output of the previous command.
I cant ping to some of my machines, but ping works.
I attach screenshots. Port is open and it is 22.
I can't figure out why i cant access.
https://www.unix.com/attachments/unix-for-advanced-and-expert-users/7492d1541541072-cant-ssh-but-ping-works-sshlisten-jpg... (17 Replies)
Hello all,
I am writing a script that pings various machines to check connectivity.
If a machine is available, the prompt returns a result immediately:
root@ops # ping 172.21.5.5
172.21.5.5 is alive
BUT
if a machine is Down , the reply takes a long time to come. The issue is I want to... (1 Reply)
Hi all,
I am using the below code to ping a code and print whehter the connection is successful or not.
use Net::Ping;
$p = Net::Ping->new();
my $host = "x.x.x.x";
# print "$host is alive.\n" if $p->ping($host);
if ($p->ping($host,3))
{
print... (0 Replies)
I have a Solaris 9 server that does not return a ping. When I try to log in via SSH I eventually get in. I am logged in now.
I know this is a wide open question, but can you recommend some things I should check?
.
Thanks in advance,
~R (2 Replies)
Hi,
I am writing a script on Solaris 10 and want to execute a remote ssh command. Normally this command should just return the value 0000000000002356 but when using ssh it seems it is passing the result to the shell to execute.
ssh root@10.5.112.145 `/usr/bin/nawk -F\, '$1=="USG" && $2=="01"... (3 Replies)
Hi,
I have a solaris 8 machine.
I see ssh is running in the machine
sbnismwp2# ps -aef | grep ssh
root 947 945 0 04:34:45 ? 0:00 /export/opt/SSHtecagt/sbin/ssh-mgmt-sysmonitor
root 945 1 0 04:34:45 ? 0:00 /export/opt/SSHtecagt/sbin/ssh-mgmt-agent... (11 Replies)
i have this SSH command which runs perfectly on command prompt in sunOS
ssh -o Port=${portno} ${uname}@${server} find ${dir_path} -name '***'
output : /usr/local/home/***
My problem is when i run same command in my script
#!/usr/bin/ksh
res=`ssh -o Port=${portno} ${uname}@${server}... (1 Reply)
I have a linux box build11 which can be pinged from build18 (Windows) box. And we can only login to the box (using SSH) from build18 box. Plz help to characterize the problem, network, DNS, DHCP, etc (or whatever which I am unsure)
Any idea what may be the reason ? :confused:
Thanks in... (4 Replies)