SCP Basics
SCP (Secure Copy) is a command-line tool for securely transferring files over SSH between local and remote systems.
Basic Syntax
Use scp [options] source destination where source and destination follow [user@]host:path.
Local to remote: Copies files from your machine to a server.
scp file.txt user@remotehost:/path/to/dest/
Remote to local: Downloads files from a server.
scp user@remotehost:/path/to/file.txt ./localfile.txt
Common Options
-r: Recursive copy for directories.-P port: Specify SSH port (uppercase P).-i keyfile: Use private key for authentication.-C: Compress data for faster transfers.-v: Verbose output for debugging.-q: Quiet mode, suppress progress.-l limit: Bandwidth limit in Kbit/s (e.g.,-l 800).-p: Preserve file timestamps and modes.
Transfer Examples
Single file upload:
scp /local/file.txt user@192.168.1.100:/home/user/docs/
Download directory recursively:
scp -r user@remotehost:/remote/dir/ ./local_dir/
Multiple files to remote:
scp file1.txt file2.txt user@host:/path/
With custom port and key:
scp -P 2222 -i ~/.ssh/id_rsa -C localfile.zip user@host:/dest/
Remote to remote (via local):
scp user1@host1:/file.txt user2@host2:/dest/
more resource-
https://linuxize.com/post/how-to-use-scp-command-to-securely-transfer-files/
https://www.howtogeek.com/804179/scp-command-linux/
https://www.geeksforgeeks.org/linux-unix/scp-command-in-linux-with-examples/