Change permissions Recursively
For chmod and chown you can use the -R option. With -R it is possible to change files and directories recursively. This will change the permissions of the testfolder and all files and subdirectories inside.
chmod -R 755 /testfolder
File Transfer via SSH
copy from a remote machine to my machine:
scp firstname.lastname@example.org:/remote_user/Desktop/file.txt /me/Desktop/file.txt
copy from my machine to a remote machine:
scp /me/Desktop/file.txt email@example.com:/remote_user/Desktop/file.txt
copy all file*.txt from a remote machine to my machine (file01.txt, file02.txt, etc.; note the quotation marks:
scp "firstname.lastname@example.org:/remote_user/Desktop/file*.txt" /me/Desktop/file.txt
copy a directory from a remote machien to my machine:
scp -r email@example.com:/remote_user/Desktop/files /me/Desktop/.