SSH (Secure SHell) is a protocol for running commands on a remote computer.

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2
votes
0answers
15 views

Identify SSH public key on remote end's shell session (no agent or no identities in agent)

I know this way to find out which key was used to authenticate when using keys stored in a key agent: ssh-add -L 2>/dev/null | awk '{print $1}' | while read identity; do grep -v '^#' ...
2
votes
1answer
552 views

Directx application using wine over ssh -x

I'm trying to run a Windows app (Artemis video game - server mode) on my archlinux server. As it is an windows application I have to run it using Wine. As I'd like to be able to launch the server ...
2
votes
1answer
950 views

ssh-add -D doesn't erase stored keys from the ssh-agent

How come this happens?: stan@tcpc:~/.ssh$ ssh-add -l 8192 e0:45:5e:cc:45:3e:17:2b:a6:54:6f:8d:53:1b:j2:e3 github (RSA) 2048 25:41:53:a6:45:5d:ac:eb:5c:45:f8:ce:42:a9:he:aa BITBUCKET (RSA) ...
9
votes
2answers
10k views

Why does my X11 forwarding attempt fail with “connect /tmp/.X11-unix/X0: No such file or directory”?

On my local machine, I run: ssh -X me@remotemachine.com (For completeness, I have also tested all of the following using -Y with identical results). As expected, this accesses remotemachine.com ...
81
votes
8answers
38k views

How can I disown a running process and associate it to a new screen shell?

I have a running program on a SSH shell. I want to pause it and be able to unpause its execution when I come back. One way I thought of doing that was to transfer its ownership to a screen shell, ...
51
votes
14answers
78k views

SSH tunneling error: “channel 1: open failed: administratively prohibited: open failed”

When I open this ssh tunnel: ssh -nXNT -p 22 localhost -L 0.0.0.0:8984:remote:8983 I get this error when trying to access the HTTP server running on localhost:8984: channel 1: open failed: ...
1
vote
1answer
19 views

ssh with -Y results in “shell-init: error retrieving current directory: getcwd: cannot access parent directories…”

I ran an X app sudo'ed from my normal account, using: mylappy$ ssh -Y me@myhost.com me@myhost.com's password: [me@myhost ~]$ sudo su - [root@myhost ~]# su - me -c 'xauth list' |\ grep `echo ...
2
votes
3answers
58 views

How to limit the number of active logins per user?

How can I limit the number of active logins per user? I've seen this on various servers before, and I was wondering how I could set this up myself. Perhaps in those cases, this was accomplished by ...
0
votes
2answers
43 views

import .sql file into a remote server from a local machine

How to import a sql file into a database, which is in the remote server. To be more specific, I've created a database in the remote machine. Currently, the database is empty and I need to import ...
2
votes
1answer
61 views

Best way to connect to an existing user context through SSH

What we would like to do: We have short living virtual machines for running scripts. The virtual machines are used through SSH to perform "builds" (sequence of scripts) and discarded once all the ...
11
votes
4answers
3k views

Get ssh to forward signals

I want to be able to send signals (SIGINT is the most important) through ssh. This command: ssh server "sleep 1000;echo f" > foo will start sleep on server and after 1000 seconds it will put ...
0
votes
1answer
67 views

How to get rid of “\r” a the end of the line comming from pipeline in bash

#!/bin/bash sourcenode=$1 destnode=$2 path1=/root/test ssh root@"${sourcenode}" -t "echo "${path1}" | xargs -IDIR find DIR " | while read line do ssh root@"${sourcenode}" -t "stat -c "%a" ...
2
votes
1answer
20 views

terminal hang when lost connection and ssh is on

when I ssh to a server over the internet in a gnome terminal tab, if I lost internet connection, the terminal tab will be hang and not accept any input. Why is it hang? Is there some way to activate ...
5
votes
1answer
71 views

Fast drop-in replacement for ssh -x

I'm looking for something to provide faster X11 fowarding than ssh -X provides. I do not need a full GUI session or the ability to drop/resume user sessions. I use NX regularly, but as far as I can ...
-2
votes
1answer
36 views

SSH error: WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

I ran rsync (cygwin) and got this error. I think they changed the Red Hat Linux OS from version 5 to version 6, last night. Would that be the cause of this error message? What do I need to do to fix ...
1
vote
4answers
49 views

What it the min/max port range for SSH?

I want to change my ssh port from 22 to something else. What is the port range I can change it to? Also, I dont want it to conflict with other apps that use common ports. What ports should I avoid?
2
votes
2answers
11 views

ssh and VNC connections are directed back to the original machine by dynamic DNS server

First question I've asked here so please forgive me if I accidentally break a rule. I recently set up an ssh server on my home machine, and am using ddclient to keep the dynamic DNS service at ...
1
vote
2answers
72 views

How to use private-key to setup password-less ssh on new machine

I have one machine say source1 and there is passwordless ssh already set to more than 100 server say remote1, remote2, ...remote100. Now I need to set similar setup of passwordless ssh on another ...
6
votes
3answers
6k views

ssh from host to guest using qemu

How do I setup ssh from the host to the guest using qemu? I am able to use port redirection when I boot the VM without any special parameters, as follows: /usr/bin/qemu-system-x86_64 -hda ubuntu1204 ...
1
vote
2answers
49 views

Do I need to keep an SSH session alive for cron to run?

I know about nohup. It prevents processes from dying after a hang-up. What I want is my user crontabs to run even if my session has timed out when they are supposed to run. I believe I need the user ...
4
votes
1answer
90 views

SSH server listening on multiple ports with passwordless access not allowing connections to second port

I have my Synology NAS running an SSH server listening on the default port 22 and I set up passwordless authentication with a public/private key and a passphrase: From sshd_config: ...
3
votes
0answers
39 views

SSH always refuses first connection attempt

There's an AIX box where I work and so I've not got any root access to it. When I connect to it using telnet I can get on fine. When I connect to it using SSH if I put in my correct password on the ...
1
vote
1answer
31 views

ssh tunneling: connection closed by foreign host

I'm trying to create a scenario to test a simple ssh tunneling, just for using a simple telnet. I have two hosts: ubuntu and suse. Both of them have the other hostname on /etc/hosts file for address ...
0
votes
0answers
25 views

SSH: public key authentication to git repo works only on local sessions

I can access my repository on bitbucket from my machine without any issues if I am in front of it, but when I am logged in through SSH to the same machine, it doesnt. Diff of SSH output(local session ...
1
vote
0answers
50 views

ssh does not get host key

I have a PivosXios-DS-M3 XBMC-Box, wich run xbmc12 until yesterday. All my desktops run Archlinux. Yesterday, I did a fresh install of tofu-linux to the Pivos-box (Kodi 14.1). Thus, on my arch ...
1
vote
0answers
17 views

Run ssh-agent 24/7 using keychain?

I have a Node.js script that requires ssh-agent to be running 24/7 on my Ubuntu server. I installed keychain and put eval 'keychain --eval id_rsa into my ~/.bash_profile, but that only runs when I ssh ...
2
votes
2answers
23 views

Use a dynamically obtained hostname with an ssh config entry

Our accounts in our lab are all mounted over NFS and are accessible over all the systems in a subnet. So, effectively we can ssh into any of the machines in the subnet and continue our work. The ...
0
votes
1answer
164 views

nohup, screen and tmux not working when closing connection on yocto linux (intel edison)

I have an Intel Edison with Yocto Linux and standard configurations. It had nohup pre-installed and I managed to install both screen and tmux (by compiling them from sources). Now, I would like to run ...
1
vote
2answers
40 views

how to use ssh command to connect to multiple computers and send different commands to each computers at same time

I need to connect multiple computers to run different programs. For different computers, I need to send them different command. How to use ssh command to connect to multiple computers and send ...
0
votes
1answer
24 views

ssh bastion host proxy command

This is a weird situation where the same command works when inputted directly in shell but not when it's a ProxyCommand in ssh config file. So this works: $ ssh -A -R 40022:git.some.pt:22 -t -t ...
0
votes
2answers
8 views

VNC/SSH: How to execute a command after logging in?

I'm looking for a way to create a VNC console user that executes the command screen or bash immediately after logging in so they get their own restricted shell for executing commands etc. Screen/bash ...
0
votes
2answers
59 views

executing command as su

I am executing this command as su. I have made the connection with SSH (using sshNet), and then when I try to set the command su -, I get no response. I have the password and the command I would like ...
3
votes
3answers
64 views

How to run a script on a remote host when I lose connection to it?

I'm working with the BeagleBone Black, which runs Debian Linux, and sometimes I will lose wireless connection to it while I am testing my programs. This wouldn't necessarily be an issue on its own, ...
1
vote
1answer
66 views

Dubious entry in logwatch

Today I found the following in the daily logwatch of my debian server: --------------------- Connections (secure-log) Begin ------------------------ **Unmatched Entries** sg: user 'root' (login ...
1
vote
1answer
25 views

How to display a Image on a remote linux machine through ssh

I have two computers, one running windows(WIN7) and the other running linux(SUSe). I'm wondering if there is a way to ssh(Putty) into the linux machine and run a command to have a image display on the ...
5
votes
1answer
1k views

Is my default remote shell a trouble maker?

By finger tim on the server, I learned that my default shell is some script /usr/local/bin/bash-wrapper whose content is: #!/bin/bash USERNAME=`whoami` if ! grep ^$USERNAME$ /etc/domain-users > ...
0
votes
2answers
646 views

How to change search result highlight in vi?

The scenario: I log on a server using ssh, and search for keywords in a log file using vi. The problem: at the moment, the results of a search is only highlighted by a cursor _ below the searched ...
0
votes
3answers
1k views

Script SFTP with password - HP-UX

I would like create a script in HP-UX to send in sftp with password. I have this command sftp -o PasswordAuthentication= but if I answer yes or no after, I have this issue "Host key verification ...
6
votes
3answers
3k views

annoying message “X11 connection rejected because of wrong authentication” while there is no problem at all

I'm having an annoying problem. When I'm logged in to a specific host via SSH, the message X11 connection rejected because of wrong authentication. occurs three times seemingly random about once ...
2
votes
2answers
31 views

Code for submitting job on cluster

I don't know whether this is the right place for posting this question, if not kindly let me know where I can ask. My doubt: I use the following code to submit a job on a cluster, but I don't know ...
1
vote
1answer
39 views

Problem in using ssh from home to university

I want to control my lab pc from home using ssh and vnc. But because of firewall of my university, I can't contact my pc from outside. I wonder if there is a way to avoid the firewall and contact my ...
2
votes
1answer
45 views

Error: QOpenGLShader: could not create shader - while running through ssh

From my computer: $ cat /etc/issue && uname -a Ubuntu 14.04.1 LTS \n \l Linux abc-pc 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux I am using ...
1
vote
1answer
488 views

SSH Agent Forwarding on server

I'm struggling with the concept of SSH Agent Forwarding. This is what I've done so far: Create default identity local (ssh-keygen) Install the public key on bitbucket Now I want to connect to a ...
-1
votes
0answers
32 views

slow operation and low cpu usage in remote linux machine [closed]

I'm using a remote linux for simulation, I ssh into it for operation. Recently, my account in the remote machine is very slow, even type in a "ls", it takes seconds to show the result. I'm running ...
0
votes
1answer
15 views

Fedora, where to put my ssh keys to login? [duplicate]

I just recently started a VPS using Fedora. Upon creation of the VPS I was asked if I wanted to use SSH keys (which I did). Now, to connect as root to the VPS, I do not need to enter a password. Now ...
4
votes
1answer
771 views

How do I prevent ssh remote login from breaking dbus?

I'm running openSUSE 11.3 on my workstation at work under KDE, I don't have root access to it. The default shell has been set to tcsh. When I am logged in at my workstation and log in remotely from my ...
4
votes
1answer
77 views

SSH server always available under heavy load

Is there a way my SSH server, and everything under it (including bash) can be always available under heavy load ? Maybe it could be some kind of a critical path, all in memory, with a dedicated CPU ...
1
vote
1answer
736 views

Key-based authentication from PyCharm / JSCH to OpenBSD fails

I am trying to configure PyCharm (java-based IDE) to connect via sftp to a new OpenBSD 5.6 machine with an almost-default setup. However, it keeps returning an error "Algorithm negotiation fails". I ...
2
votes
5answers
444 views

Is it more convenient to login to SSH using a password because SSH Keys need to be stored on each computer [closed]

I do not mean this to be an opinionated question, I am just trying to see if I am missing something here: It seems like using a username and password to use the SSH because the username and password ...
0
votes
2answers
37 views

Connection Timeout for ssh connection depending to the ip location?

I have a machine where I can connect it using ssh from different networks. But when I have moved to other country I have not be able to connect it. What may be the cause? I am able to ping the server ...