Open up Applications->Utilities->Terminal.
In it, type:
and hit return - that will explain sftp (keep hitting the spacebar to scroll through the explanation - 'man' means "manual" - or type 'q' at any time to exit the explanation).
Then, when ready to use it, again within Terminal, just type, as explained above:
or more simply, since your system almost undoubtedly has only one 'sftp' app:
Of course, you'll be copying something, so the way to do that would be, for example, something like this:
Code:
sftp username@host:file localFile
or, as a dummy example with user 'bob' (on the system you're copying from), computer '192.168.1.103' (the computer you're copying from - you don't need to use an IP address as long as the computer 'name' is known to your system, so you could, for example, use 'CorpMacServer' or whatever) and file (on other computer) named /Users/bob/sample.pdf being copied to the same name locally, you'd say:
Code:
sftp [email]bob@192.168.1.103:/Users/bob/sample.pdf[/email] .
Ignore the underlining above - it's just vBulletin (the software used by this forum) thinking it's an email address.
That final '.' above just means "to here". In other words, "copy that file to this directory, please."
You'll be asked for a password and if you want to connect - just enter the appropriate responses.