ssh in a loop
Adam Selene
I am trying to write a script that will collect output from a list of
machines on my network. To accomplish this I have setup ssh keys and have
written a simple loop. The only problem is my script does not go through
the entire iteration of all the machines, just the first one it grabs during
read. Here is my code:
#!/usr/local/bin/bash
cat machines.list |while read line ;
do
ssh -t myuserid@$line $1 >> /home/myuserid/output.txt
done
clear
less /home/myuserid/output.txt
The contents of machines.list is:
proxy-01.mydomain.com
proxy-02.mydomain.com
proxy-03.mydomain.com
proxy-04.mydomain.com
proxy-05.mydomain.com
When I run the script it grabs the output from the first machine in the list
but goes no further. What am I doing wrong here?
Thanks in advance,
Adam
Andreas Kahari
[cut]
> #!/usr/local/bin/bash
>
> cat machines.list |while read line ;
> do
> ssh -t myuserid@$line $1 >> /home/myuserid/output.txt
> done
> clear
> less /home/myuserid/output.txt
> When I run the script it grabs the output from the first machine in the list
> but goes no further. What am I doing wrong here?
Are you usually able to connect with ssh to the machines in
question without having to provide a password?
--
Andreas Kähäri
Dan Mercer
"Adam Selene" <NOS...@NOSPAM.COM> wrote in message news:4IOdnQy7DN-...@speakeasy.net...
: Hello,
:
: I am trying to write a script that will collect output from a list of
: machines on my network. To accomplish this I have setup ssh keys and have
: written a simple loop. The only problem is my script does not go through
: the entire iteration of all the machines, just the first one it grabs during
: read. Here is my code:
:
: #!/usr/local/bin/bash
:
: cat machines.list |while read line ;
: do
: ssh -t myuserid@$line $1 >> /home/myuserid/output.txt
empties it. use the -n option
while read line
do
ssh -n -t myuserid@$line $1
done <machines.list >>~/output.txt
clear
less >>~/output.txt
Or you could pipe the results directly to less:
while read line
do
ssh -n -t myuserid@$line $1
done <machines.list |less
Dan Mercer
: done
:
:
Kevin Rodgers
Presumably the ssh command is reading standard input, which is the list of
machine names, and sending it to the first remote machine. Does ssh provide
a -n option, like rsh?
--
Kevin Rodgers
Bill Marcum
you redirect input for ssh, it will also read from the pipe.
--
You can go anywhere you want if you look serious and carry a clipboard.
Adam Selene
news:1Pbmb.70116$832....@twister.rdc-kc.rr.com...
Thank you! The -n is just what I needed.
Thanks again,
Adam
JasonJames HisWife
JasonJames HisWife
Esau Laguna
Esau Laguna
David W. Hodgins
> El jueves, 19 de noviembre de 2020 a la(s) 05:59:32 UTC-6, JasonJames HisWife escribió:
>> On Friday, October 24, 2003 at 12:00:14 PM UTC-7, Adam Selene wrote:
>> > "Dan Mercer" <dme...@mn.rr.com> wrote in message
>> > news:1Pbmb.70116$832....@twister.rdc-kc.rr.com...
that was a follow up to a 7 year old message.
I know google groups wants to make it look like this is a google group, but it's
usenet news group that google copies, poorly.
Regards, Dave Hodgins
Janis Papanagnou
> On Sun, 09 Oct 2022 14:01:42 -0400, Esau Laguna <esaula...@gmail.com>
> wrote:
>
>> El jueves, 19 de noviembre de 2020 a la(s) 05:59:32 UTC-6, JasonJames
>> HisWife escribió:
>>> On Friday, October 24, 2003 at 12:00:14 PM UTC-7, Adam Selene wrote:
>>> > "Dan Mercer" <dme...@mn.rr.com> wrote in message
>>> > news:1Pbmb.70116$832....@twister.rdc-kc.rr.com...
>
> Please learn to look at the dates. You're following up to a 2 year old
> message
> that was a follow up to a 7 year old message.
Janis
David W. Hodgins
Regards, Dave Hodgins