Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: SSH w/ command in authorized_keys apparently needs pty
Top Forums Shell Programming and Scripting SSH w/ command in authorized_keys apparently needs pty Post 302537651 by KenJackson on Saturday 9th of July 2011 01:10:04 AM
Old 07-09-2011
The problem is, the remote site may have it's IP address changed, so I won't be able to ssh to it until I get the new IP address.

That's actually the main reason I want to do this. I can easily tell it my home IP address through a tiny file on a public site. But I have to give it the power to write something somewhere to tell me it's IP address.

This should be simple. And it almost works. But it doesn't.
 

9 More Discussions You Might Find Interesting

1. AIX

How to monitor pty

Hi all, today I could not telnet in AIX 5.2 cause I received the error "telnetd: All network ports in use". To allow users to telnet again I increased the number of ptys from default 256 to the new number 512. To avoid the same problem in the future and for a better understanding, I need... (2 Replies)
Discussion started by: l-roner
2 Replies

2. Programming

good example for pty usage ?

i am looking for a good example to explain *why* someone should use pty's. (3 Replies)
Discussion started by: grumpf
3 Replies

3. Shell Programming and Scripting

monitoring SSH authorized_keys

Hi, We have around 200 SUN Servers in production environment and I have one box from where I manage all the servers. It's setup such that I can SSH from my box onto all the 200 servers with without supplying password. It is working fine but sometimes we notice the keys getting changed and asking... (0 Replies)
Discussion started by: prvnrk
0 Replies

4. UNIX for Advanced & Expert Users

monitoring SSH authorized_keys

Hi, We have around 200 SUN Servers in production environment and I have one box from where I manage all the servers. It's setup such that I can SSH from my box onto all the 200 servers with without supplying password. It is working fine but sometimes we notice the keys getting changed and asking... (1 Reply)
Discussion started by: prvnrk
1 Replies

5. UNIX for Dummies Questions & Answers

use of tty and pty files

Hi, According to my understanding tty files that are available in /dev directory are terminals that are given to different users. please help me understand what are /pty files, like are they drivers to the devices.. also is the default tty terminal given to a user.. (2 Replies)
Discussion started by: saharookiedba
2 Replies

6. Programming

Race condition with PTY

I've been experimenting with pseudo-terminals and found something I don't quite understand. Writing an EOF character to the master end doesn't work quite as I expect. Once I've written any other data, the master pty seems to treat a single ^D as a seperator, i.e. writing "abcabc" would let cat do... (1 Reply)
Discussion started by: Corona688
1 Replies

7. Post Here to Contact Site Administrators and Moderators

Apparently my post is Homework/Classwork?

I previously posted a question in the Shell Scripting forum a few minutes ago. I recieved a message telling me I had breached a rule, apparently because my post was a homework infraction. Well, im currently trying to figure out how to use Raspberry Pi's (as im a starter) I asked one of my... (1 Reply)
Discussion started by: Waggie14
1 Replies

8. Shell Programming and Scripting

Appending authorized_keys on multiple servers using ssh

Hi I have an ssh 'for' loop script to login and put a key on multiple servers. I need to append a file on each server but the command which works ok from the prompt does not work via the script. I have cat filename | ssh user@servername "cat >>append.file.name" I have tried to 'spawn' this in... (0 Replies)
Discussion started by: Grueben
0 Replies

9. Ubuntu

Help me to revert the file /root/.ssh/authorized_keys

Hi, I copied the key of rsa.pub to authorized_keys using the below command cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys By mistake i have executed another command view cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys so now additional keys are copied.so please help me... (3 Replies)
Discussion started by: SA_Palani
3 Replies

LEARN ABOUT REDHAT

ipcalc

IPCALC(1)								RH								 IPCALC(1)

NAME

       ipcalc - perform simple manipulation of IP addresses

SYNOPSIS

       ipcalc [OPTION]... <IP address>[/prefix] [netmask]

DESCRIPTION

       ipcalc provides a simple way to calculate IP information for a host.  The various options specify what information ipcalc should display on
       standard out. Multiple options may be specified.  An IP address to operate on must always be specified.	Most  operations  also	require  a
       netmask or a CIDR prefix as well.

OPTIONS

       -b, --broadcast
	      Display the broadcast address for the given IP address and netmask.

       -h, --hostname
	      Display the hostname for the given IP address.

       -m, --netmask
	      Calculate  the netmask for the given IP address. It assumes that the IP address is in a complete class A, B, or C network. Many net-
	      works do not use the default netmasks, in which case an inappropriate value will be returned.

       -p, --prefix
	      Show the prefix for the given mask/IP address.

       -n, --network
	      Display the network address for the given IP address and netmask.

       -s, --silent
	      Don't ever display error messages.

AUTHORS

       Erik Troan <ewt@redhat.com>
       Preston Brown <pbrown@redhat.com>

REPORTING BUGS

       Report bugs to our bugtracking system: http://bugzilla.redhat.com/bugzilla.

COPYRIGHT

       Copyright (C) 1997-2001 Red Hat, Inc.
       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

       ipcalc(3)

Red Hat, Inc.							   April 30 2001							 IPCALC(1)
All times are GMT -4. The time now is 07:29 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy