zssh

interactive file transfers over ssh
zssh (Zmodem SSH) is a program for interactively transferring files to a
remote machine while using the secure shell (ssh). It is intended to
be a convenient alternative to scp, allowing to transfer files without
having to open another session and re-authenticate oneself.
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Files are transferred through the zmodem protocol, using the rz and sz
commands.
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Homepage: http://zssh.sourceforge.net/