Remote access of a machine via ssh is simply done as follows
-For direct acces to machine
ssh -p 1022 username@server_address
The -p command just specifies the port. Usually you will be logging in on port 22.
-For copying files from a remote machine
scp -P 1022 username@server_address:path_to_remote_file path_to_local_directory
-For copying to a remote machine just switch the order:
scp -P 1022 path_to_local_file username@server_address: path_to_remote_directory
What is especially useful is not having to enter a password each time you login or copy to/from the remote machine. The steps to set this up are as follows
-Generate RSA keys
This will generate a public and private RSA pair in
-Copy the public key to the remote host. For this we use ssh-copy-id. First you may need to install this using Homebrew (OSX).
brew install ssh-copy id
Then use this to copy the public key to the remote machine
ssh-copy-id -i ~/.ssh/id_rsa.pub -p 1022 username@server_address
-Now you should be able to ssh into the machine without having to enter a password. The public key you uploaded can be found in,
Rather than directly copying many files to and from a remote server it is usually easier to create a tar file:
tar -cvzf filename.tar.gz *.txt
will create a tarball of all txt files in the directory.
For unzipping the file:
gunzip filename.tar.gz tar -xvf filename.tar
tar packages all the files together into a single file and then gzip compresses the file. The list of tar flags can be found here