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38 lines
2.0 KiB
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38 lines
2.0 KiB
Plaintext
sftp is an ftp replacement that runs over an ssh tunnel. Two programs are
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included - sftp and sftpserv. When sftp is run and a host is connected to
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(either by running 'sftp remotehost' or 'open remotehost' from the sftp
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prompt), an ssh connection is initiated to the remote host, and sftpserv is
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run. So, sftpserv must be in your path on the remote host. Note that since
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sftpserv is run from ssh, no root privileges are necessary. By default,
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sftpserv is expected to be in $PATH on the remote host. This can be overriden
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by passing '--enable-remotepath=<path>' to configure or using the
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'-P remotepath' option to sftp. To run as a different user, use the
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'-l remoteuser' option. To connect to an alternate port with ssh,
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use the '-p remoteport' option. To enable ssh compression, use '-C'.
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From within sftp, all of the normal ftp commands are present: open, close, get,
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put, mget, mput, cd, ls, dir, lcd, delete, rm, pwd, quit. There's also exec,
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which runs a program on the remote end. This program must not accept input
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('exec ls' is ok, but 'exec vi' is not). To run local commands, precede them
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with a '!'.
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When building sftp, a link is made to rsftp, which uses rsh instead of ssh.
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sftp has been tested with rsh (with and without .rhosts) and ssh1 (with
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ssh-agent, password, and RSA authentication). I haven't tested ssh2, but it
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should work. The login process is a bit of a hack, so if logging in doesn't
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work, it's a bug and should be fixed.
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sftp uses a fairly simple multiplexed protocol over an SSH channel. The server
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is a state machine, and is far more capable than the client. As an example,
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the server theoretically could handle multiple concurrent file transfers, but
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the client will only send one.
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This was mostly written during the summer of 1998, and resurrected in October,
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1999. I don't know how much time I want to spend adding new features, but
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bugs will be fixed.
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sftp is distributed under the GNU General Public License (GPL), Version 2.
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WWW: http://www.xbill.org/sftp/
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Author: Brian Wellington (bwelling@xbill.org)
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