Teach you how to use SSH for file transfer in Linux SysOps

Teach you how to use SSH for file transfer in Linux SysOps. Specific code examples are required

SSH (Secure Shell) is an encrypted remote login protocol. It not only It can be used to log in to the operating system remotely and can also be used to transfer files between different hosts. In Linux SysOps work, it is often necessary to use SSH for file transfer. This article will provide you with specific code examples and teach you how to use SSH for file transfer in a Linux environment.

First, you need to ensure that the OpenSSH package is installed on your system, which provides an implementation of the SSH protocol. You can use the following command to check if OpenSSH is installed:

$ ssh -V

If you see output similar to the following, OpenSSH is installed:

OpenSSH_7.9p1, OpenSSL 1.1.1g  21 Apr 2020

If OpenSSH is not installed, you can use Use the following command to install:

$ sudo apt-get update
$ sudo apt-get install openssh-server

Once OpenSSH is installed, you can use SSH for file transfers. The following is a code example for file transfer using SSH:

1. Transfer files from local host to remote host

$ scp /path/to/local/file username@remote_host:/path/to/remote/directory

This command will change the local host’s /path/ to/local/fileThe file is transferred to the /path/to/remote/directory directory of the remote host. You need to replace username and remote_host with the username and hostname of the remote host.

2. Transfer files from remote host to local host

$ scp username@remote_host:/path/to/remote/file /path/to/local/directory

This command will transfer the /path/to/remote/file file of the remote host to In the /path/to/local/directory directory of the local host. Likewise, you need to replace username and remote_host with the username and hostname of the remote host.

3. Transfer files between two remote hosts

$ scp username@remote_host1:/path/to/remote/file username@remote_host2:/path/to/remote/directory

This command will transfer the /path/to/remote/file file of remote host 1 Transfer to the /path/to/remote/directory directory of remote host 2. You need to replace username and remote_host1, remote_host2 with the corresponding username and hostname.

The scp commands in these examples are based on the SSH protocol. It uses the same authentication and encryption mechanisms as SSH, so data security is guaranteed during file transfer.

In addition to the scp command, you can also use the rsync command for file synchronization. rsync is also a tool based on the SSH protocol. It can effectively perform incremental synchronization and only transfer the changed parts of the file, improving the efficiency of file transfer.

The following is a code example of using rsync for file synchronization:

$ rsync -avz --progress /path/to/local/directory username@remote_host:/path/to/remote/directory

This command will change the local host’s /path/to/local/directory Directory synchronization to the /path/to/remote/directory directory on the remote host. Likewise, you need to replace username and remote_host with the username and hostname of the remote host.

This article provides specific code examples for using SSH for file transfer. I hope it will be helpful to you for file transfer in Linux SysOps work. Whether you are transferring files from a local host to a remote host or between remote hosts, SSH is a safe and reliable option. By mastering these tips, you can transfer files more efficiently and ensure the security of your data.

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