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

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1answer
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ProxyCommand without socat, nc or Bash's TCP redirection?

ssh_config's ProxyCommand allows to establish some connection to a proxy prior to establishing the connection to the actual target machine. Simple question: how can I leverage the dynamic or SOCKS ...
5
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2answers
4k views

Kill disconnected SSH session running in `screen`

I'm always forgetting to logoff when ssh-ing somewhere. After I reopen my notebook, a screen window with this running ssh is unresponsive. I have to create another window, $ killall ssh, and only then ...
1
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2answers
566 views

Reverse socks5 using SSH

Setup: Server is a virtual machine Server have a local ip adress Server is restricted so that it can't reach the internet (not sure how) Client machine have access to both server via SSH Client ...
2
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2answers
498 views

Why I can't connect to VPS after changing OS from CentOS to Ubuntu?

Recently, I've changed my VPS operating system from CentOS to Ubuntu. Unfortunately since then I can't connect to my VPS. The following message comes again and again (screenshot attached). Why this ...
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300 views

sshfs and Emacs: file changed on the disk

I am using Mac 10.6.8 SSHFS version 2.4 fuse4x library version: FUSE 2.8.7 / fuse4x 0.9.2 I connect via sshfs to a remote cluster (via a bridge). I modify the remote files with emacs. The problem ...
0
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1answer
597 views

Changed /etc/ssh/sshd_config. Now can't get to SU. Am I screwed?

To allow one of my users ssh access I added the line AllowUsers user to my sshd_config. I gave the box a reboot and attempted to ssh back in as superuser. I was unable to do so. I have my keys- ...
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2answers
73 views

How can I delete a file on client?

After copying files from /home/foo/bar the original files on the client must be deleted, EXCEPT for file /home/foo/bar/special_file. This file must remain on the client. I want to delete all the files ...
0
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2answers
16k views

How to copy only the files of a folder(including subfolder's files), but not the folder itself in shell

In Openssh, On the client, the content of path/to/file must be copied to Server. All files in /path/to/file on the client must be copied to /path/to/files on the server. Note: only copy files, no ...
0
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1answer
190 views

Process substitution over ssh with sudo in Bash shell

What is the proper way to do something like this: diff <( ssh -t myuser@hosta 'sudo httpd -M') <(httpd -M) When I want to compare the output of the 2 commands, the first on a remote host the ...
2
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1answer
787 views

How to terminate an interactive ssh session after certain amount of time

In my /etc/ssh/sshd_config file I have set the below parameters: ClientAliveInterval 10 ClientAliveCountMax 3 Now from host machine I did ssh to the my server (where I made changes to /etc/ssh/...
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3answers
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Kill process spawned by ssh when ssh dies

This is a question that has been addressed several times, not only here, but also in other sites of the stack exchange network (e.g. http://stackoverflow.com/questions/331642/how-to-make-ssh-to-kill-...
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3answers
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How to execute applications in existing X window from virtual console?

I run Debian Wheezy and have Xfce as my X-Window Manager on virtual console 7, which starts up automatically. Once I've logged on and I'm using the xfce interface, is it possible for me to press Ctrl+...
0
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1answer
170 views

SSH proxy laptop

I run a simple ssh proxy and I am always on the move with my laptop. Having to restart it every time I open the lid and connect to the internet. sshpass -p password ssh -D 9999 root@myvpsip Is it ...
3
votes
2answers
16k views

script to automate scp in network

I have a network full of Linux machines. In this network, I have a user as user1 with the password as password in all the machines. I have the following script to put files in the home directory of ...
4
votes
2answers
645 views

What effects does restarting sshd have on existing ssh sessions?

I've made some changes to the sshd_config. As I understand it, now I need to restart the sshd service. What happens to existing ssh sessions for the users? Any pointers to documentation I need to ...
2
votes
1answer
921 views

How to export a function in bash over ssh?

I would like to write a function in bash, then export that function and execute it over ssh. Is that possible, and if yes, how? I tried #!/bin/bash function myfunc() { echo $1 } export -...
3
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2answers
983 views

SSH through router to internal file server

This is a real beginner question, I know. But I really don't seem to be able to wrap my head around the terminology to get what I want working. And since I want to do this on a router that 40-50 ...
3
votes
2answers
139 views

SSH when to use public key and password?

I think I understand the difference between Public Key authentication and Password. But how do I decide which one to use and which one is most secure in what situation? Can anybody give me some real ...
1
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1answer
5k views

ssh into a server using .ssh/config alias & run an alias on the server in the same time

On my laptop Inside ~/.ssh/config file I have this: Host <serverAlias> HostName 127.0.0.1 #Server IP User <username> PreferredAuthentications publickey IdentityFile ~/....
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3answers
288 views

Wrong number of logged in users using “w”

There was a temporary network glitch and all user terminal ssh sessions were broken. Upon logging in to the CentOS server again and running the "w" command lists a higher number of users logged in ...
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2answers
141 views

Accessing Windows Box from Linux Terminal SSH

I am familiar with accessing linux from windows, but how can I go about accessing files on a windows box from a linux terminal via ssh? I'd like to stay away from RDP and just grab files via the ...
4
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2answers
1k views

Gaussian, which is run with nohup on remote linux machine, gets killed when the local computer is powered down before the shell is exited

I have a problem running Gaussian on remote Linux via SecureCRT on Windows. Gaussian Gaussian spawns different child executables ("link"s) when running. For example, I start Gaussian by running ...
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2answers
28k views

Meaning of “Connection closed by xxx [preauth]” in sshd logs

We have a Windows batch script, which connects automatically to a linux server via PLINK (putty). There is NO public private key authentication, the user and the password are in the script. On our ...
2
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3answers
3k views

Trying to SSH into my Android phone, but connection closed

I am trying to use the ssh/sftp Daemon app on Android, and SSHing into the phone using an openssh client. Here is the verbose output I get right before the connection breaks debug1: Authentication ...
2
votes
1answer
183 views

date doesn't accept its own output

What is the option for date to give output in a format acceptable to date --set ? I'm trying to remotely set the date, using the current computer clock of my workstation. ssh user@host sudo date --...
1
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1answer
38 views

ssh: define group of servers [duplicate]

I am using a script to connect to multiple servers. At the moment, I am using something like: for SERVER in server1 server2 server3 ; do ssh $SERVER "my-command" ; done I have to specify the (many) ...
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0answers
45 views

Prevent scp from asking passphrase [duplicate]

I have enabled private key based access to my server. I have generated the certificates with a passphrase. So to ssh to that machine I have to do - $ ssh -i .ssh/id_rsa_server foo@example.com and ...
8
votes
1answer
6k views

Ctrl-C handling in SSH session

When I start an SSH session that executes a long-running command, what happens with Ctrl+C (SIGINT) handling? I can see that the SSH session is closed, but I am not sure who gets the SIGINT first: is ...
0
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2answers
276 views

Run an SSH command on two hosts whose name comes from another command

So what I'm trying to do should be fairly simple but I can't seem to figure it out. I need to kill a certain process on different boxes, they all have a defined IP range although they will eventually ...
8
votes
1answer
881 views

Why doesn't the process substitution <() work with ssh -F

I have some vagrant virtual machines. To log into them I issue the vagrant ssh command. I want to log into them using regular ssh command. The vagrant ssh-config outputs the suitable config file $ ...
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3answers
68 views

How to find from what computer I connected to a current server

I often work on one of available to me Linux/HP-UX servers (let's say it is server1) and then do ssh server2 ((let's say it is server2)) and start working on another Linux/HP-UX server. Then I can ...
1
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1answer
552 views

Session limit for OpenSSH server on Ubuntu Desktop 7.10

I need restrict session limit on my OpenSSH server only for one session (one connection). I use Ubuntu Desktop 7.10. Of course Version is old, but I need it for experimental purposes. I tried modify ...
3
votes
3answers
1k views

Correctly parse arguments in script behaving like a shell called through SSH

I have a server with a very limited used whom I want to be able to run two very specific (and custom) instructions through SSH. In order to do that, I have set the shell for that limited user to be a ...
2
votes
2answers
5k views

Can a shell script running in a ssh continue to run if the SSH instance closes? [duplicate]

I'm trying to write a shell script that does a lengthy batch job on a remote server. I'll be running the script over SSH. The thing is, I intend to start the script in the evening and collect the ...
3
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1answer
162 views

Do ssh_config rules cascade?

I have the following rules Host * Compression yes Host sop HostName 192.168.56.101 if i ssh sop will the compression flag also be added?
3
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1answer
2k views

Granting access to a restricted git shell

I tried setting up git-shell on our CentOS (6.4) system (after getting this working correctly on Ubuntu 13.10, maybe cross platform hot mess?) my /etc/passwd shows git:x:500:500:Web Archive VCS:/...
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2answers
1k views

SSH will not make a local connection without password prompt

While trying to set up a loop back ssh I am getting prompted for a password after a pub key install, this is a CentOS 6.4 server. ssh_config (grep -v ^# /etc/ssh/sshd_config | grep -v ^$) is here: ...
4
votes
1answer
2k views

Weird SSH/SCP progress meter behavior

I've got a very weird SSH behavior and it's making me a bit nervous. Basically the progress meter is totally bogus: so bogus that it's nearly useless. And I fear that there may be something else going ...
1
vote
1answer
1k views

startx from mac osx to RHEL6

I am trying to get a GUI over ssh -X. My RHEL6 server did not have X Window System and a graphical desktop environment. So I installed using yum groupinstall "X Window System" Desktop. It installed ...
1
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3answers
12k views

Set environment variable automatically upon SSH login (no root access)

The situation: I run Ubuntu 12.04 LTS on a virtual machine. I regularly have to connect to my account on a university server, I do this by opening up terminal and using ssh -Y username@server.com. ...
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0answers
30 views

SSH tunneling via few hosts [duplicate]

That question is'n only about Unix/Linux - but contain something... So - given: host1 with TeamCity server running on 8111 port; host2 which will be "ssh-proxy" between client and host1. From host1 ...
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4answers
4k views

How do I play an HTTP music stream over SSH?

I know I can just do mplayer <stream> to open and play a stream on the local machine. However, I'm behind a firewall. Instead, I'd like to open the stream on a remote machine, but still play it ...
24
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2answers
23k views

SSH: tunnel without shell on ssh server

I have to set up a tunnel between two hosts. For this I use ssh in this way: ssh -L MY_LOCAL_PORT:FOREIGN_ADDRESS:FOREIGN_PORT MYUSER@SSH_SERVER after that, I log in to my SSH_SERVER. How can I ...
2
votes
1answer
341 views

Let remote ssh session know about tmux?

Assume I run a tmux session on machine A and from it I start an interactive shell via ssh to machine B. I'd like to change machine B's PS1 to better suit the use from under tmux; for instance, I'd ...
1
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1answer
585 views

Execute command on remote host fails

I'm trying to execute some commands on remote host like this : ssh -t -t -l user 172.20.20.20 <<EOF pid=$(ps -ef | grep [a]pp-management | awk '{print $2}') && kill -9 $pid && ...
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1answer
3k views

ssh (remote console) between 2 computers from different private networks

I have two computers. Both of them are from different private networks. I'd like to connect from one of them to another (to program on it remotely). I attempted to use some remote desktop software (...
8
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3answers
6k views

Bash: interactive remote prompt

I have a script which connects to a remote server and check if some package is installed: ssh root@server 'bash -s' < myscript.sh myscript.sh: OUT=`rpm -qa | grep ntpdate` if [ "$OUT" != "" ] ; ...
1
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1answer
133 views

I've installed a Public Key, but my login doesn't ask for the passphrase

I'm following this tutorial SSH Tutorial for Linux I've manually transfered the public key to the remote server and I ran these commands also because it wasn't asking me for my passphrase. chmod ...
0
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2answers
128 views

I'm trying to install my public key manually w/ scp

I'm following a tutorial and it's going along well. I used ssh to connect fine. Then I created a private and public key. Which leads me to my first question it says that the keys have been saved to ...
0
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1answer
67 views

ssh-keygen utility

Is this possible to change the path that ssh-keygen use the files from? The default one is $HOME/.ssh/ so is this possible to change this? Like for example when using ssh-keygen -R to remove the host ...