Master Remote File Transfers: Choose SCP or SFTP and Automate with Cloud Toolkit

What is SCP?

SCP (Secure Copy) is an SSH‑based protocol that transfers files between hosts while preserving basic file attributes such as permissions and timestamps. It combines the RCP file‑transfer mechanism with SSH authentication and encryption.

How to upload and download with SCP

Upload a single file: scp localfile user@host:/remote/path

Upload an entire directory recursively: scp -r localdir user@host:/remote/path

Download a file: scp user@host:/remote/file /local/path

Download a directory recursively: scp -r user@host:/remote/dir /local/path

What is SFTP?

SFTP (SSH File Transfer Protocol) also runs over SSH but offers richer remote‑file management capabilities, such as directory listing, creation, deletion, and renaming.

How to use SFTP from the command line

Start an SFTP session: sftp user@host

After authentication, the prompt sftp> appears.

Download a file: get /remote/file /local/path

Upload a file: put /local/file /remote/path

Check the remote working directory: pwd

Change remote directory: cd /remote/dir

List remote files: ls

Local‑side commands are prefixed with l (e.g., lpwd , lls , lmkdir ).

When to use SCP or SFTP?

Speed : SCP is generally faster, especially on high‑latency networks, because it uses a more efficient transfer algorithm.

Security : Both protocols inherit SSH’s encryption and authentication, so they provide comparable security.

Functionality / Usability : For operations like browsing directories, creating or deleting files, and renaming, SFTP is the better choice.

File size : Neither protocol imposes a hard size limit; SCP may have a slight edge for very large transfers.

Automating transfers with Alibaba Cloud Toolkit

Both SCP and SFTP can be invoked from the command line, but developers often prefer a graphical approach. The Alibaba Cloud Toolkit plugin integrates remote‑file browsing, upload, and download directly into popular IDEs, allowing seamless file operations without leaving the development environment.

Using the plugin in IntelliJ IDEA

Open Tools → Alibaba Cloud → Alibaba Cloud View → Host in the IDE.

In the host list, choose More → Remote Files.

Use the provided UI to refresh, upload, or download files on the remote server.

Installing Cloud Toolkit in IntelliJ IDEA

Go to File → Settings.

Select Plugins from the left navigation.

Switch to the Marketplace tab.

Search for Alibaba Cloud Toolkit.

Click Install on the search result.

After download completes, click Restart IDE.

Upon restart, verify the plugin appears under File → Settings → Plugins.

Conclusion

For quick, high‑speed transfers, SCP is often preferable; for richer file‑management tasks, SFTP is the better option. The Alibaba Cloud Toolkit bridges these command‑line tools with IDEs, streamlining remote file operations and improving developer productivity.