I just bought a synology nas ds720+ and I'm trying to setup it as a media server.
But first I want to know, is there a way to execute commands directly in DMS ? like commands to create folders, open files etc etc
I know that I can do things from ssh but I want to setup my nas when I'm in pause at work when I have nothing to do. From here I can't launch ssh or cmd, I can only access to my nas from dsm.
Anyway, sorry for not using the good terms and having a bad english.
Have a good day !
Depending on your Browser at work, this could help you, but you would need to install a plugin.
https://community.synology.com/enu/forum/1/post/133977
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I just created a aws lightsail instance, which includes nodejs under Ubuntu, and it is quickly setup, which looks cool.
However I only find the command line operation. I still cannot find the GUI, as it is uncomfortable to edit file through command line.
Any idea of how can I use GUI on it?
Welcome to the world.
No, You cannot use the GUI/UI to edit the files on the Amazon Lightsail instances. You can connect to the server using winscp software and edit the web root files on your machine.
To edit the files out side web root you have to rely on the editors suggested by David J Eddy
Well, looks like I'm a bit late in answering this question, but yes, there is a way to edit files using a GUI.
To do this, install an FTP client on your own computer (not Lightsail server). Popular examples include FileZilla and Cyberduck, and both have free versions.
Once downloaded, you just type in your Server IP address and link your .pem keychain file (should be downloaded from lightsail.aws.amazon.com).
With this new software, you can edit files from your instance and the file structure on your own computer.
Nope. The Ubuntu flavors used in LightSail are of the 'Server' variety. You may not like the idea of editing via the CLI but, honestly, learn it. VIM, eMacs, Nano, etc. Find an editor you can handle and learn it as well as you can. This will help you much later.
Given:
Connection to the Uni's secure shell like this:
me#my_computer~$ ssh <my_name>#unixyz.cs.xy.com
Password:***********
Welcome to Unixyz. You now can access a terminal on system unixyz:
my_name#unixyz~$ ls
Desktop Documents Pictures Music desired_document.pdf
my_name#unixyz-$
Taks/Question:
Getting the desired_document.pdf to my own system. I have thought of some options so far:
1)Since i can access an editor like nano I could write a C/Java programm , compile it in the home directory and make that program send the pdf. Problem with that: Had to code a client on the Uni machine and a server on my own system. On top of that I only know how to transfer text given to the stdin and no pdf's. And its obviously too much work for the given task
2) I found some vague information about commands: scp and sftp. Unfortunately, I can not figure out how it is done exactly.
The latter is basicly my questions: Are the commands scp and sftp valid options for doing the desired and how are they used?
EDIT:
I received a first answer and the problem persists: As stated, i use:
scp me# server.cs.xyz.com:/path/topdf /some/local/dir
which gives me:
/some/local/dir: no such file or directory
I'm not sure in which environment you are.
Do you use Linux or Windows as your every-day operating system?
If you are using windows, there are some ui-based scp/ssh implementations that enable you to transfer these files using an explorer based ui.
For example there is https://winscp.net/
You can indeed use scp to do exacty that, and it's easier than it might look:
scp your_username# unixyz.cs.xy.com:path/to/desired_document.pdf /some/local/dir
The key is the colon after the servername where you add your path
Optionally you can pass in the password as well, but that's bad practice, for obvious reasons.
I actually got the answer myself and the error that I was having. Both, the guy with the answer and the commentor where right. BUT:
scp must be launched when you are in YOUR terminal, I always tried to do it while I was connected to the remote server.
2 hours wasted because of that.
I would need some advice for those who want to help :
I have a linux server, and I want to provide an ssh (openssh) access to services like rsync, and sftp, for a specific user (extuser).
1) I'd like to restrict extuser to only process rsync or sftp, no other commands
2) extuser needs to read/write some specific directories, so I want to restrict what he can see and where he can write.
3) I'd read some about rbash or lshell, but i wanted to know if by "basic" configuration of openssh, without adding specific tools, i could manage it ?
Here is my reflexion (not very far, sorry)
For the 1) If i had only rsync to deal with, i've seen the rrsync script that is really helpfull :) But how to add the sftp restriction ? I've read about the "command=" in authorized_keygen and the use of variable SSH_ORIGINAL_COMMAND, but not sure if it is mainly dedicated for ssh command explicitely used (i.e ssh user#host "mycommand"), not for command that "internally" use ssh like rsync or sftp ?
For the 2), I think the chroot option for sftp will help
If you have any advices, remarks, are if you see i'm going in wrong way, i'd apreciate some returns :)
Thanks a lot :)
Ok, so it appears that the chroot can fullfill all the needs, since it's up to me to choose the commands i want to allow in the "chrooted" bin :)
So no commands restrictions by openssh configuration, but by chroot arborescence. And therefore i don't seem to need extra tools :)
I currently have a script that ssh's into another server and runs a command. When the ssh command runs though in prompts if I would like to connect (yes/no) and for the password. Is there a way that when the ssh call is made that I could automatically supply the input for the prompt?
Also, I do realize that using a public key with the ssh command would resolve this issue, but I do not have permission to create a public key.
Don Libes created Expect exactly so you could program tools that need to interact with prompts. I've even used it with modems! It's a very old tool but very effective, and it deserves to be more widely known.
The only downside is that it uses Tcl, which is not my favorite programming language. But to learn enough Tcl to make simple expect scripts won't take you more than an hour. And Expect is really the perfect tool for the job.
can you download and install external tools? if you can try, try sshpass. I have not tried, but you can give it a go.
I'm not sure if this is possible or not.
What I'm looking for is a way to tell telnet to use a certain IP address to log into and then run commands where the commands change based on a user's MAC address.
Basically it would be:
tell telnet to use x.x.x.x as the IP to log into and put in the correct username and password
tell telnet to run commands (based on the user's MAC address) that can change based on which user stats you want to see, for example: show macaddress
export the output to notepad
close
expect can do this. If you don't have Tcl but Python, try Pexpect.
If you just want to run one command, use ssh (which allows you to log in, run a command and which will return with the error code of the command, so you can handle errors, too).
If you want to run more than a single command, write a script, use scp to copy that script to the other side and then execute the script with ssh. I've used this approach with great success to build a simple spider that could run a script to gather system information over a large number of hosts.
I think you're looking for expect (it automates these kind of interactive applications). Here is a gratis chapter from the authority on expect, the book "Exploring Expect".
Also you should use SSH if this is over the internet. Telnet is insecure as it's a plain text protocol.
Not to blow my own horn, but you may be able to twist a personal app of mine (note: Sorry, I've removed this.) to this end.
There's currently no documentation other than what is on that page and no public source code (though I've been meaning to get onto that, and will work that out tomorrow if you're interested), but I'd be happy to answer any questions.
That said, any MUD client could be turned to the same use too.