How to use Linux for remote file transfer

With the rise of cloud computing, big data, artificial intelligence and other technologies, remote file transfer has become an indispensable and important link. As a representative of open source systems, the Linux system has the characteristics of stability, security, and flexibility, and provides us with excellent remote file transfer services. This article will introduce three common remote file transfer methods under Linux systems to help you make better use of Linux for remote file transfer.

1. SCP (Secure Copy)

SCP is a secure file transfer tool based on the SSH protocol, which is simple, safe, and stable. SCP can transfer local files or directories to a remote server, and it can also transfer files or directories on a remote server to the local computer. The specific operations are as follows:

1. Transfer local files to the remote server:

scp local_file remote_username@remote_ip:remote_folder

Among them, local_file refers to the local file path, and remote_username refers to the remote server The user name, remote_ip refers to the IP address of the remote server, and remote_folder refers to the directory where files are stored on the remote server.

For example, assuming we want to transfer the local file /home/user/test.txt to the /home/remote_user/ directory on the remote server 192.168.1.100, we can do this:

scp /home/user/test.txt remote_user@192.168.1.100:/home/remote_user/

2. Transfer files on the remote server to the local:

scp remote_username@remote_ip:remote_file local_folder 

Where, remote_username refers to the user name on the remote server, remote_ip refers to the IP address of the remote server, remote_file refers to the file path on the remote server, and local_folder refers to the directory where files are stored locally.

For example, suppose we want to transfer the file /home/remote_user/test.txt on the remote server 192.168.1.100 to the local directory /home/user/. We can do this:

scp remote_user@192.168.1.100:/home/remote_user/test.txt /home/user/

2. SFTP (Secure File Transfer Protocol)

SFTP is a secure file transfer protocol based on the SSH protocol. It is more flexible and powerful than SCP. SFTP provides remote file management functions, including file upload, download, modification, deletion, etc. The specific operations are as follows:

1. Connect to the remote server:

sftp remote_username@remote_ip

Among them, remote_username refers to the user name on the remote server, and remote_ip refers to the IP address of the remote server.

2. Upload files:

put local_file

Among them, local_file refers to the local file path.

3. Download file:

get remote_file

Among them, remote_file refers to the file path on the remote server.

4. View files on the remote server:

ls

5. Switch directory:

cd remote_folder

Among them, remote_folder refers to the remote server directory on.

6. Exit SFTP:

exit

3. FTP (File Transfer Protocol)

FTP is the most common and oldest remote file transfer protocol. Compared with SFTP, it is simpler and easier to use, but less secure. The FTP server needs to install FTP service software, such as vsftpd, pure-ftpd, etc. The specific operations are as follows:

1. Install FTP software:

Taking vsftpd as an example, the installation command is as follows:

sudo apt-get install vsftpd

2. Start the FTP service:

sudo service vsftpd start

3. Connect to the FTP server:

Use an FTP client to connect to the FTP server, such as FileZilla, etc. Just enter the IP address of the FTP server, the username and password on the FTP server when connecting.

4. Upload files:

In the FTP client, drag the local file to the directory of the remote server.

5. Download files:

In the FTP client, drag and drop the files on the remote server to the local directory.

6. Close the FTP service:

sudo service vsftpd stop

Summary:

This article introduces three common remote file transfer methods under Linux systems: SCP, SFTP and FTP. SCP and SFTP are both secure file transfer tools based on the SSH protocol, which can ensure the security of file transfer. Although FTP is easy to use, it is less secure. In actual applications, it is necessary to choose a suitable remote file transfer method according to actual needs.

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