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I am new to linux so please go easy and talk slow =)
In Plesk I have some options for accessing the server over SSH. I just want to connect, add my public key and run rsync for backup.
Access to the server over SSH:
Here is an image of the Plesk control panel:
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bash and sh are two different shells of the Unix operating system. bash is sh, but with more features and better syntax. Bash is “Bourne Again SHell”, and is an improvement of the sh (original Bourne shell).
The answer to this question is, " -bash denotes a login shell and /bin/bash denotes a non-login shell." The answer to the other question is a list of differences between login shells and non-login shells.
First of all, i should say in terms of functionality there is no difference between /bin/false & /sbin/nologin . It means, both denies a shell access to a particular user account. /bin/false does nothing and it just exits with a status code indicating failure when a user attempts to login to the machine.
/bin/nologin is intended to indicate to the user that no login is permitted for an account. (It is used a login shell.)
Use /bin/bash
What are these? They look like directories to me.
These are different options for default shell given to users who connect via SSH
If you haven't used any of these shells before, I think bash is the best option for you. Most tutorials and articles for linux commands online assume you are using bash.
However, you have two options for bash: /bin/bash and /bin/bash (chrooted).
To do backups, you will probably need the bash to have full access to execute all commands. I'm not sure whether you can get what you want done with a chrooted bash.
Basically, chrooted bash is for avoiding mishaps.
To know more about chrooting, you can read this article
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Most of options are various Unix shells. A shell is basically what interprets the text that you type in the window. Some people prefer one shell over others. If you are not familiar with any shell in particular, pick one based on your needs Comparison Chart
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