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

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How to take screenshot of /dev/pts?

I am connecting to another server using ssh service. I want to execute some commands (like creating users) on some servers and take the screenshot of the pseudo-terminal, which is to be stored on my ...
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1answer
237 views

How to check if SSH compression is enabled?

I am experiencing severe slowdown in Git checkouts from VM. I've been told that one of the reasons may be SSH compression (either enabled or disabled). How to check that is the state of compression ...
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2answers
754 views

Remotely compile and run program using ssh and screen

I'm trying to compile and run a program remotely. However, I'd like to this within a screen and also I'd like to run this using grid engine on another node after I ssh. Currently I have: ssh me@...
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2answers
371 views

running a program located on my computer on a server

There is a server I can SSH into , but I can't use up a lot of the HDD space on it. I want to run a program, but this program is quite large, so I can't just copy it to the server. Is there a way to ...
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2answers
3k views

Why can't I use public/private key authentication with ssh on Arch Linux?

I have the following setup on an Ubuntu machine: ~/dotfiles/authorized_keys2 ~/.ssh/authorized_keys2 -> /home/wayne/dotfiles/authorized_keys2 I had the same setup on my Arch machine, but when I ...
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1answer
2k views

How to ssh into remote machine and create new user in bash script

I am writing a bash script and would like to ssh into a remote machine and execute the adduser command. This is not working, all that I get is the --help text for adduser when I run the code below. ...
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1answer
166 views

Change SSH connection settings without disconnecting?

I watched the The Black Magic Of SSH video and lecturer in this video drops to SSH shell with some key-combination. How did he do that?
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1answer
168 views

How to send a mail when someone remote connects to my server

I would like my server to send a mail to me when someone connects remotely over ssh to my server. who only gives me back the Username, TerminalID and Date. I cannot use only that, I need to check ...
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9k views

“PTY allocation request failed on channel 0 stdin: is not a tty” when SSH'ing into a Debian server

My hosting space (Debian Wheezy) serves two websites (one WordPress and one Rails). Today I saw both were down and I rebooted the server. The Rails site works again and the WordPress one now says that ...
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2answers
375 views

SSH into Windows Server '08 from Mint 14 - “permission denied”

So I have been trying every which way to get into my Server '08 box via SSH. I have tried FreeSSHD and Cygwin. Everything works fine when I am using simple SHA pass authentication, but the moment I ...
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1answer
1k views

How do I troubleshoot ssh tunnels disconnection?

I am using SSH tunnels launched via autossh at boot on a device installed at remote locations. Up to now everything was working fine but yesterday the connection partly went down and autossh wouldn't ...
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1answer
1k views

Connect via SSH with hostname instead of username and hostname

Whenever I have to login to a remote server, I have to enter ssh username@hostname and subsequently a password. I want to save time by omitting some parameters whenever I try to login to a server. I ...
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3answers
779 views

Can't ssh to a machine

All of a sudden, I couldn't ssh to a machine to which I used to ssh earlier. Consider I am ssh-ing from A to B. Output when I run ssh root@ip_addr_of_B I get: Permission denied (publickey,...
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1answer
414 views

Binvox not working on a headless Linux server

I'm trying to run Binvox (http://www.cs.princeton.edu/~min/binvox/) via web server, on an Amazon EC2 server with Nvidia GRID K520 GPU and running Ubuntu 14.04. I'm using the system(binvox, $ret) ...
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1answer
3k views

Provide sftp read/write access to folder and subfolders, restrict all else

I need to provide user access to Ubuntu 14.04 Server, only limited to certain folder. To enjoy the ssh security and not to open up new service and ports (ie, ftp), I'd like to stick with sftp. However,...
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1answer
157 views

Keychain SSH Key Manager prevents SFTP login on CentOS

I installed keychain and added this to my .bashrc in CentOs to help manage my SSH Keys: /usr/bin/keychain --clear $HOME/.ssh/id_rsa source $HOME/.keychain/$HOSTNAME-sh So on SSH login I am prompted ...
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0answers
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How to SFTP through proxy if there is no netcat? [duplicate]

sftp -v -oProxyCommand="nc -v PROXY_IP_HERE PROXY_PORT_HERE %h %p" user@remote_sftp_server.com 22 How can I do this if I don't have netcat installed? I don't have permission to install it, even in ...
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0answers
1k views

How to efficiently use Console2 with screen/tmux/byobu?

I'm using Console 2 and msysgit's bash to SSH into my Linux machines. There, I'm using screen (but considering tmux and/or byobu), but currently simply with one single-terminal session per Console2-...
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1answer
106 views

Howto Tell if a System authenticate with password only or through PAM

If my computer has the pam package installed and has the directory /etc/pam.d/sshd, does it mean for sure when I ssh to my computer, I am authenticated through pam modules? The /etc/pam.d/sshd looks ...
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3answers
313 views

Redirect SSH user server side

I know that I can create shortcuts for specific users/servers on the client side via ~/.ssh/config or /etc/ssh/ssh_config, but I would like to do something similar but on the server side. That is, ...
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2answers
179 views

Characters are encoded twice when I ask SSH to reattach a screen session on the remote host

I want to be able to SSH to a remote host and restore a screen session with one command. Both hosts use UTF-8 locale. My problem is that then, inside the screen session, characters are encoded twice. ...
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3answers
8k views

Using nohup to keep a script running indefinitely

I am very new to Linux and I've only been using it to SSH to my web server using Putty. The issue I am having is this: Basically I've got 2 php scripts. One get_tweets.php constantly listens for ...
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1answer
1k views

VNC & SSH : local (win-putty) -> hop (linux) -> remote (linux)

I'm gettin a headache trying to access a remote VLC & SSH. This is the situation : Local : Win box behind NAT, dynamic IP. I want to connect from here. Hop : Linux box, static IP server Remote :...
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1answer
522 views

How do you verify if an INCOMING ssh tunnel is still up and who it belongs to?

See edit below for short version I am having issues displaying the status of the ssh tunnels on our server. Here is some relevant info: user001 = remote client's username 123.123.123.123 = ssh ...
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2answers
1k views

New users cannot connect to server via SSH

An SSH server using RSA keys for authentication is running on Ubuntu 14.04. My original account can connect to the server using SSH (PuTTY). However, the following issue occurs: Disconnected: No ...
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4answers
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Pseudo-terminal will not be allocated because stdin is not a terminal

I'm trying to set up automatic SSH hopping through a server which doesn't have nc. This works from the command line: ssh -A gateway ssh steve@target (I have added my public key to the SSH agent). ...
3
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2answers
122 views

Shell loses keypresses when running SSH in the background

I'm experiencing a bizarre problem with SSH + Bash + Terminal.app: when SSH is run in the background, the shell appears to randomly lose keypresses ~50% of the time. For example, if I run: $ ssh -N ...
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7answers
32k views

Is it possible to run ssh-copy-id on port other than 22?

I have a server with SSH running on a non-standard port. Instead of 22, it runs on 8129. To log in, I use: ssh -p 8129 hostname Now, whenever I need to set up a key for password-less login, I have ...
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1answer
687 views

Identify the outgoing connection (ssh) with the who command

After a ssh connection, if I run the who command on the server : I have this response : olivia@olivia-pc:~$ who olivia :0 2014-09-08 11:40 (:0) olivia pts/0 2014-09-08 11:43 (:0)...
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1answer
174 views

ajaxterm using proportional font

I have Ubuntu 14.04 LTS, Apache 2.4.7, Python 2.7.6 and Ajaxterm 0.10-12ubuntu1. Ajaxterm is proxied via Apache. Here's the apache.conf excerpt: # Suppresses the Via header ProxyVia Off # Do not ...
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0answers
407 views

Cannot SSH after switching to Netgear router

I have Comcast Xfinity internet. When I was sent their Wifi router/Cable modem combo box, I was able to use SSH perfectly. However, since the Wifi from the box was weak, I decided to buy my own router:...
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0answers
193 views

Operation timeout (in /var/log/secure)

Sometimes when connecting via ssh to my RHEL server, I get the following message back from the client: Operation Timeout Seems like a network problem, but when I look at /var/log/secure on the ...
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3answers
24k views

ssh remote server on some port other than 22 without password

I am usually connecting to the remote server with ssh user@server.com -p 11000 and then giving the password each time for user. How should I avoid entering the password each time I connect ...
14
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3answers
2k views

How to tell if SSH'd into machine? [duplicate]

Is it possible to tell if a terminal is SSH'd into a machine ? some kind of command to do this for me and execute something if I am SSHd?
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1answer
486 views

Avoid trapping by ssh ProxyCommand

I have the following lines in my .ssh/config: Host localhost ProxyCommand none Host n0* ProxyCommand none Host * ProxyCommand corkscrew proxy.m.com 80 myserv 443 ~/.ssh/auth i.e. for localhost and ...
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2answers
705 views

Run `dbus-send` in a remote system

I'm trying to run dbus-send in a remote system but somehow I'm not able to run it. But the same dbus-send, if I run it in the local system, is working fine. COMMAND: ssh remote@xx.xx.xx.xxx "dbus-...
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3answers
207 views

SSH - Is it possible for an SSH session to take complete control of the client? [duplicate]

When I open a SSH session on my terminal to a remote server, is this only a virtual terminal, or is it possible for the SSH server that I am connected to to "take control" of my terminal? For example, ...
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1answer
82 views

SSH key-only remote login, is disabling password a good practice?

I need a maintenance user which only requires a remote login. I'll preferably use only public keys to login into the account. I thought of just creating the user with useradd myuser, adding later the ...
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2answers
489 views

Locale not being set on initial login on Raspbian/Debian

When I log in to my headless Raspbian box using putty/ssh, the locale is not being set correctly. However, if I su to another user, then su back, the locales are then set. This session shows the ...
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3answers
10k views

can't get gnome-session working over SSH

I am new to using SSH, so sorry if this question is too rudimentary. To sign into my office computer from my home computer through ssh I go through these two steps: first I login to my office server: ...
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1answer
1k views

Why ssh-copy-id prompts for the local user password three times?

Noticed from my previous question that when trying to copy an SSH public key to a remote host via ssh-copy-id, I am prompted for the local user password three times: ssh-copy-id myuser@myserver ...
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2answers
188 views

Different configurations for ssh client depending on ip address or hostname

I have this in my ~/.ssh/config directory: Host 12.34.56.78 IdentityFile ~/.ssh/my_identity_file When I ssh to 12.34.56.78, everything works fine. I'm asked for the passphrase for "...
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1answer
19k views

How to wget a file to a remote machine over SSH?

I'd like to basically pipe a wget command to a file on a remote server over SSH. How can I do this? I know I could simply ssh into the server and have it download the file, but I'd much rather use the ...
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4answers
121 views

Backup remote management protocol in case of faulty SSH server

I have a remote computer which I currently cannot access with SSH. The computer responds to ping but SSH gives connection refused, so I suspect the ssh-server is not working for some reason. What ...
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8answers
915 views

Write a remote managing script

I need to be able to locally run a script that will connect to various servers and run commands on them. What is the best way to accomplish this?
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1k views

Load a background image or set the background color if Konsole/Shell is running SSH

I want to set my laptop to load an image in the shell's background or set the background color to red if I'm connected via SSH. How can this be done? With a bash function in .bashrc? I have: Set the ...
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1answer
129 views

How does ssh server defines which key to use first having more than 1?

I have just found out that on my Ubuntu machine I have more public keys to serve in /etc/ssh directory: $ ll /etc/ssh total 296K -rw-r--r-- 1 root root 237K lip 3 2013 moduli -rw-r--r-- 1 root root ...
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1answer
1k views

SSH Public Key authentication - works only after a physical login

I am trying to connect via SSH to my ubuntu server with public key authentication. For some reasons I get an "Permission denied (publickey)." on the client, whenever I execute ssh -i ~/.ssh/id_rsa &...
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0answers
58 views

sshd suddenly wants a passphrase from Linux box, but not from windows (putty) [closed]

My Amazon EC2 instance running Ubuntu is no longer letting me ssh in via my local Linux system. I haven't changed a darned thing on either side but now it wants a passphrase and says nope when I ...
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4answers
7k views

What slows down my ssh login?

Everytime I ssh login to a server, it is always very slow. As a reply to my earlier post said, "grepping through a 200 line file should take millisecond or so, so I would doubt its that." I tried ssh ...