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

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4
votes
2answers
712 views

Prevent tmux from starting up on SSH

I would like tmux to create a new-window when I ssh onto a machine from an existing tmux session. However, I do not want a tmux session started on the new machine! I have the following in my .bashrc, ...
3
votes
1answer
2k views

How to kill a command started over SSH - the SSH connection lost

If I use timeout 10 ssh -n -o BatchMode=yes 1.1.1.1 'sleep 20' > 1.1.1.1.txt 2>&1 & To give out a remote command on a server, and I kill the SSH connection after 10 seconds, then I ...
13
votes
3answers
8k views

Answer yes in a bash script

I'm trying to do a git clone trough a bash script, but the first time that I run the script and the server is not known yet the script fails. I have something like this: yes | git clone ...
4
votes
2answers
10k views

“Permission denied, try again” while transferring files with scp

I have two servers (A and B) and my local machine. I'm trying to transfer a file from server A to server B. From server A: scp ./backup.tar user@server.b:/home/public/ Permission denied, please try ...
7
votes
3answers
3k views

how to ssh to remote server and use local emacs to edit files?

Is there a way to use the emacs installed my local computer to access remote files I have in a remote server? I have googled and found out that I should use TrampMode however it is necessary for me to ...
3
votes
1answer
745 views

Make a failed SSH forward a fatal error

I have a script which connects to a remote host to replicate some files via SSH. I must connect to an rsync daemon listening on port 873. To accomplish this I have a ssh configuration like this. ...
4
votes
2answers
5k views

Is there any way to improve Putty on slow connections?

I'm working with putty but have a slow connection to the server. It's not slow everywhere and I don't need to get it faster. There is latency between when I type and when the text is displayed in the ...
15
votes
1answer
5k views

How can I configure a reverse SSH connection to the connecting computer?

I'm going to be deploying a number of machines in the near future which will be behind routers. It won't be feasible to set up dynamic DNS on each router and port forwarding, so is there a way I can ...
2
votes
2answers
1k views

SSH on my local network - problem with login

I'm having problem with logging into my local-network-linux (server) ssh with Putty (and with Linux terminal, too) When my server shows me request to insert username, I insert "root" and I do press ...
8
votes
1answer
174 views

Does ssh-agent store my passphrase?

Is it possible to determine the passphrases of private keys added to ssh-agent? I'm thinking along the lines of someone with root privileges trying to find out my passphrase after I have added the ...
1
vote
1answer
976 views

cryptsetup luksOpen only accepts password via ssh

while installing my Gentoo system I encoutered a strange error. One of my disk is encrypted, I have done all the installation via ssh, so did I enter the encryption passphrase via ssh. Now I entered ...
20
votes
2answers
32k views

Is there a command to list all open displays on a machine?

When SSH'd locally into my computer (don't ask, it's a workaround), I can't start graphical applications without running: export DISPLAY=:0.0 If I run this first and then run a graphical ...
5
votes
2answers
1k views

How to make password-less login work

I generated a key and copied it to my target: ssh-keygen ssh-copy-id username@hostname I left the the location of the key as default and did not set any passphrase. For a small while after that, I ...
10
votes
1answer
7k views

Foreign characters won't display in SSH

I'm having some problems with using ssh and a remote server (which I do not have admin access to) - Specifically, there are a couple of folders on there with Korean and Cyrillic text. When I display ...
1
vote
1answer
641 views

Only allow ssh/vpn on OpenWRT

If I don't want to use wireless encryption, but I still want security and I want to use sshuttle (on the clients, see: https://github.com/apenwarr/sshuttle/) for tunneling everything through an SSH ...
5
votes
4answers
3k views

ssh hanging then time out

I am new to ssh on linux. I have two computers connected on a switch. The first one is 192.168.1.2 and the second is 192.168.1.3. When I use the ping command I got a reply and everything is good, but ...
4
votes
1answer
982 views

SSH Port Forward a local IRC server to my remote server

So, I have this slight dilemma: I am not allowed to host an IRC server on my VPS, but I am allowed to use tunneling of some sort to let users connect to an IRC server I have set up locally on my Mac ...
6
votes
2answers
5k views

Multiple 'Host *' in ssh_config?

My understanding of the way ~/.ssh/config works is that each 'Host ' line takes effect for any host matching after that point in the config file. I have a number of personal servers and work servers ...
3
votes
1answer
1k views

Chroot debian squeeze for shell access

A user requires shell access to an Ubuntu server from the WAN side. There are many shell accounts with simple passwords. So shell port (port 22) is blocked in the firewall. For my WAN side user I am ...
1
vote
1answer
342 views

restricting pushes to selected Mercurial repositories using `ssh` forced commands and `hg-ssh`

The context of this question is the hg-ssh script. It is helpful but not critical to know something about Mercurial. This script sets up a forced command using public keys so the given public key ...
3
votes
3answers
3k views

Pass the background flag (&) through expect and ssh

My command line/bash fu is extremely weak, but I'm trying to hone my abilities. Hopefully someone can help. I wrote a super simple expect script so that I can SSH in to a headless box we're using at ...
2
votes
2answers
480 views

Run ssh as a command of another ssh command

I want to run a program on a machine that I have ssh access to from a gateway machine that I can access with ssh too. When I want to run an mpi program on the target machine T, I access to the ...
5
votes
2answers
470 views

Run mpirun and ssh-add remotely on the same session

I am developing a program that is running on multiple machines using MPI. I have machines on Amazon EC2 where I can start mpirun from one of them (the master). Everything works as I expect if I ssh ...
3
votes
3answers
470 views

Output compiler options from SSH

How can I list the configuration options that ssh/sshd was compiled with? I'm attempting to troubleshoot a SELinux configuration issue, and want to make sure that SSH was compiled with ...
4
votes
1answer
4k views

dot file not sourced when running a command via ssh

When I run my program interactively, it works fine: ssh somehost $ ~/some/path/somescript.py When I run my program over ssh directly, it doesn't work. The variable PYTHONPATH is not set, because ...
5
votes
2answers
2k views

VPN like solution for SSH Tunneling?

Socksify like program for Fedora? Socksify, tsocks, proxycommand in ssh, they're great softwares/solutions that can be used to "constrain" given apps to use a SOCKS5 proxy (what was created with an ...
3
votes
2answers
995 views

System hangs on shutdown/restart - is ssh involved?

If I ssh into my server and do 'shutdown -r now', the shutdown hangs on the message 'Sending processes the KILL signal', and I have to walk into the lab and use the power button to force a shutdown. ...
1
vote
1answer
484 views

How do I get QEMU to open without a BadWindow error after ssh'ing with X11 forwarding?

After ssh'ing to a machine (with -X) I run qemu and get the following: X Error of failed request: BadWindow (invalid Window parameter) Major opcode of failed request: 25 (X_SendEvent) Resource ...
0
votes
0answers
478 views

What's difference between FISH and SFTP? [duplicate]

Possible Duplicate: What's the difference between SFTP, SCP and FISH protocols? I use SSH for remote file systems access. And I use Krusader file manager. Krusader offers a choice of ...
4
votes
1answer
6k views

Chrooted SFTP with full access to SSH stopped working (Debian)

I've got a home server on Debian 6 for backups. I'd like to setup chrooted SFTP environment with SSH access for some users (only for my knowledge, there are two users now). It almost works or rather ...
11
votes
3answers
10k views

SCP from one server to another without password prompt

What is the best way of doing SCP from one box to the other without prompting for password? There are two servers: Server A (10.152.2.10): /home/oracle/export/files.txt Server B (10.152.2.11): ...
2
votes
2answers
890 views

Puzzle: transfering files between two servers (ssh, ftp, http multipart…)

A puzzle: files being uploaded in realtime by SCP to SERVER1 need to be transfered to SERVER2. But: SERVER1 doesn't actually have network access to SERVER2 (NAT), however SERVER2 has SSH access to ...
3
votes
1answer
235 views

ssh behavior for root and non-root user

When I ssh as root to a remote machine, the command output looks like this: root@Machine:/current/path#: However, if it's a non-root user, all I see is: $ How can I get the same behavior as for ...
35
votes
3answers
16k views

How can I break away from an SSH session that has crashed?

Many times I have an SSH session that doesn't respond anymore (for example, when I lose internet connection and then reconnect). Ctrl+C, Ctrl+D, Ctrl+Z and a zillion of key presses don't have any ...
0
votes
1answer
694 views

github ssh problem- permission denied(publickey)

I tried setting up git as shown in Github's help page, on Arch linux but there seems to be some problem with the SSH keys. It gives this error- Permission denied (publickey). This problem is ...
3
votes
1answer
940 views

Set up password-less SSH tunneling from home computer behind NAT to inside computer behind gateway

My home computer is behind an ISP-level NAT (and firewall). The target computer is work computer behind gateway. You have to log to gateway computer first via SSH (as it is the only one visible and ...
6
votes
2answers
1k views

Should I be backing up my SSH host keys?

In my automated backups, I'm not sure if I should be doing this. If the hard drive fails or if I wipe the hard disk and start over, what will be the effect of starting with a new SSH host key to my ...
1
vote
1answer
2k views

How to monitor traffic when SSH tunneling?

If I run: ssh -fND localhost:6000 USERNAME@IPADDRESS -p PORTNUMBER and I set my webbrowser to use 127.0.0.1:6000 SOCKS5 proxy, is there a way for the remote SSH server to monitor my web traffic? ...
1
vote
4answers
1k views

How to prevent a program from dying when its ssh session dies?

I have a really old console application that I want to make a bit more resilient. The program is used this way: the user uses a custom terminal emulator to connect to a remote machine through ssh ...
6
votes
2answers
807 views

Configuring a vncserver so it's only accessible from my ssh tunnel

Since I use vnc through an ssh tunnel, is there any way I can block the open vnc port that the remote machine is listening on without it affecting my ability to use the ssh tunnel? Both machines are ...
0
votes
0answers
185 views

Is it possible to login via ssh to unlock LUKS drives? [duplicate]

Possible Duplicate: SSH to decrypt encrypted LVM during headless server boot? I have a large number of Ubuntu servers in co-location that I would like to use LUKS encrypted drives on. ...
4
votes
1answer
1k views

Tunnel traffic through another machine over ssh

I want to be able to route a portion of my traffic through another machine over SSH. For example, is it possible to browse the web through the ssh tunnel and also browse the web through your LAN ...
26
votes
4answers
6k views

Is there a way to communicate with someone at their desktop?

My wife is sitting at her home desktop, alpha, which is running a recent version of Ubuntu. I am on a bus, using ConnectBot on my G1 phone, and can SSH into alpha from wherever I am. For complicated ...
1
vote
0answers
151 views

How to chain SSH? [duplicate]

Possible Duplicate: Common multiple SSH connections file handling issue I want to reach hosts that are only indirectly accessible with SSH/SCP/SFTP. Are there more solutions for this? Are ...
1
vote
1answer
169 views

vnc over ssh port assignment

At the office I have on the servers a vnc server running. In Windows I use putty to connect to the server, I log in and then use realvnc to see the desktop. But I cannot get this to work on Linux. I ...
0
votes
2answers
796 views

Git Server Bash and SSH

I want to use Git over SSH with my Linode VPS running Ubuntu 10.04 LTS. Instructions seem pretty easy, infact given I had already setup my SSH key etc.. All I had to do was instruct my local ...
4
votes
1answer
2k views

Forwarding X11 over SSH if the server configuration doesn't allow it

Consider a situation where I'm logging in over SSH from machine A to machine B, I have an X session on machine A, and I want to run an X program on B. ssh -X B makes this work transparently. But what ...
6
votes
4answers
1k views

Why do I need to hit enter to get my shell prompt after my init.d script completes?

I had to write my own CentOS init.d script for celery because it only ships with one for Debian. You can see the script I wrote when I answered my own stack overflow question 3989656. But there's a ...
3
votes
3answers
2k views

Accessing a linux machine with a name (not ip address)

When I access a linux machine with sshfs, I take the following steps. Get the ip address of the linux (the ip address is dynamically allocated to linux) Run sshfs id@ip_address:/HOME_DIRECTORY Can ...
6
votes
2answers
520 views

Pass my credentials from a ssh session to another ssh session

I want to ssh from A to B, using a particular private key that I have in A. Then I want to ssh from B to C using the same credentials that I used to ssh into B. Is it possible to "pass" the ...