I use to navigate my remote servers with ssh. Sometimes i would like to download a file to open in my computer.
But the only way i know how to do it is to open a new command line window and use scp from local to remote.
is there a way to do this directly from the ssh server?
like a command that know my current ip so can set up everything automatically?
(wonderful would also be to do the upload in such a way...)
There is no easy way to do it - I used ssh & scp many years the way you just described. But, you may configure ssh & scp in such a way that they don't require password each time, which is very comfortable! For this, you need:
generate keys by ssh-keygen - they can be also passphrase (= password) protected
copy the keys to remote machine to ~/.ssh/authorized_keys
And then, each time you start a session, you run ssh-agent and ssh-add. You just enter the password once. And then you can just run scp/ssh many times, from scripts, etc., without the need to enter the password each time!
I don't remember the exact way how to configure all this, but have a look at manpages of all those useful tools! Many things can be automatized by placing them into ~/.bash_profile or ~/.bashrc files.
I found this while trying to answer your question for myself:
https://askubuntu.com/a/13586/137980
Just install zssh and use Ctrl-# to go into file transfer mode.
Related
I have connected to a remote Ubuntu host from Windows using VS Code and using it for remote development. Often times I open different code repositories in VS Code but every time I have to open a different folder despite having the connection established the VS Code ask for password.
It seems that once we are commented to a remote host then successive opening of different folder from same host should not prompt for password.
Is there any setting I am missing or should do to resolve this or save password.
I'm assuming you're connecting to an ssh remote.
There are two ways to authenticate an ssh connection, via password and via public/private key. When using the latter you don't need to enter the password each time.
To use the public/private keys here's what you have to do:
You first need a pair (public/private) of ssh keys. On windows you can use ssh-keygen to generate them for you and put them in the default ssh config folder ( ~/.ssh/)
You then have to configure the remote server to allow your ssh key, you can do this in two ways:
with the ssh-copy-id command if available (I think on windows it's not there, but you can try)
by manually add your public key (~/.ssh/id_rsa.pub) to the.ssh/authorized_keys file on the host machine
Here's a link to know more about passwordless logins via ssh: https://www.redhat.com/sysadmin/passwordless-ssh
Open git bash on Windows
cd .ssh
ssh-copy-id -i id_ed25519.pub your-username#your-server
I'm trying to write a perl script which copies a directory with files from other machine to current machine.
I can use the scp command in shell but it requires a password. Also I don't have the following modules insatlled on my work area (and unfortunately I cant install them):
Net::OpenSSH
Net::SSH::Perl
Net::SCP
Net:: FTP
I do have installed Net::SSH
My mission is to copy the files from other machine to current machine. The main problem is that it requires a password to use scp on shell. Is there any elegant way to solve this problem?
The elegant way is to use public key authentication.
If you really need password authentication, well, besides the ones you listed there are other modules which would allow you to automate it. Check if you have available Net::SSH2, Expect or IO::Pty.
You may also be able to use use some ssh/scp client accepting the password from the command line or from an environment variable* as plink, pscp or lftp.
Another possibility is using the utility sshpass.
(* Note that passing passwords in the command line or in environment variables is a very insecure practice!)
I followed the guide from https://help.github.com/articles/generating-ssh-keys/ to generate a ssh key used to connect to github from my server.
The problem is if I close the shell and login the server again, I have to repeat below steps to reconnect to github, otherwise the accessing will be denied:
eval "$(ssh-agent -s)"
ssh-add ~/.ssh/id_rsa
How can I setup a permanent connection with github?
Since you are logging on to the command-line (presumably using SSH) all applications that you run, including ssh-agent, stop when you log out.
In my opinion your best bet is to have your CentOS machine start ssh-agent for you each time you log in, then manually use ssh-add to add your key. This can be done by modifying your shell's login script. If you are using bash, this file is called ~/.bash_profile. If you are using another shell, refer to its documentation and choose an appropriate file.
Edit one of these files and add eval "$(ssh-agent -s)" at the end.
Now, each time you log in ssh-agent should automatically start, and you can optionally run ssh-add (since you are using a file that ssh-add looks for by default you don't need to pass the file to the command) to add your key, then do Git stuff.
It sounds like you want to automate the adding of the key as well. This isn't something that I would choose to do since I like adding keys to be explicit, but because you don't have a passphrase on your SSH key you should be able to add ssh-add to the same file we modified above (after we start the agent, of course) and have your key added automatically.
Thanks #Chris
I did the following and it worked:-
Step1:- .bash_profile
Step2:- enter image description here
Step3:-source .bash_profile
Step4:- enter image description here
here's my situation.
I'm running Cruise Control as a Windows Service and trying to get it to connect to a Mercurial Repository on BitBucket over SSH.
I'm pretty sure that everything's configured OK (PuttyGen, Pagaent, etc). I'm remoting onto the server using the same account that I am using to run the service and if I issue hg pull -b ssh://#bitbucket.org// from a command line everything works. I added -v to the ssh configuration in mercurial.ini and I can see all of the steps that are taken.
If I run CC.NET from a command prompt then it builds fine. In the console window I can see the same logging from the SSH operation.
However, if I run CC.NET as a service (using the same user account that I'm logged in on) the call to BitBucket times out. I can find no way to work out why either. The build log doesn't help and neither do ccnet.log or ccnet.trace in the temp directory. I was expecting one of them to contain the logging from the SSH operation, but they don't.
Can anyone help? Is it that running as a service prevents it from connecting to Pagaent (I've started Pagaent by adding it to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run). When I did the pull from the command line I had to OK a dialog, but only once. Is it waiting on the same dialog now that it's running as a service?
Getting close to my wits end here.
Thanks
I did get it working in the end. The trick was to create the public key without a passphrase. When running as a service the solution has to be completely non-interactive and the passphrase option with pagaent.exe just isn't.
Here are the steps:
Use PutTTygen to generate a secure key WITHOUT a passphrase. If you really do need one then you can add it to the mercurial.ini file, but defeats the point for me as it's in plain sight anyway.
Copy a mercurial.ini to two locations: C:\Windows\System32\config\systemprofile and C:\Windows\SysWOW64\config\systemprofile. Probably only one of these was really necessary, but I didn't have the time to experiment. The first is the home directory for the system user when running 64 bit apps, the SysWOW64 location for 32 bit. Make sure that if you do the same as me then keep both files in sync - or go one further and work out which is the correct location.
Add something like this line under the [ui] key in both files:
ssh = "D:\Program Files\TortoiseHg\TortoisePlink.exe" -ssh -2 -C -batch -v -i "[Path to your ppk file]"
Add the passphrase to the end of the command if one was created in step 1.
Make sure that TortoisePlink.exe is specified, not Plink.exe. They should both be in the same directory.
Download psexec from http://technet.microsoft.com/en-gb/sysinternals/bb842062.aspx
Run d:\PSTools\PsExec.exe -s -i cmd.exe. This will open a command line as the system account in interactive mode.
Now do an hg pull, or hg clone or whatever.
A dialog should pop up with a confirmation message. This is a one time thing and the reason that you have to do the PsExec step. OK the dialog.
Now cc.net should be able to be run as a service under the local system account using SSH!
I have only one user (say "goodk") that can accept SSH connections. So, I am not able to use Tramp to edit files which are accessible to other users than the one that accepts SSH connection. How can I achieve this?
How I do this currently:
I use terminal. From terminal I login to user "goodk". Then I switch user using su or sudo.
Have you checked:
How can I use Emacs Tramp to double hop ssh?
or
http://jeremy.zawodny.com/blog/archives/000983.html
or
http://codesnippets.joyent.com/posts/show/366
To the remote server the files are being read/written by the user that connects via ssh. If the files to be modified are owned by a different user then they will need to be readable/writable by the ssh user.