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display your current remote working directory, type \c{pwd}.

\S{psftp-cmd-lcd} The \c{lcd} and \c{lpwd} commands: changing the
local working directory

As well as having a working directory on the remote server, PSFTP
also has a working directory on your local machine (just like any
other Windows process). This is the default local directory that
other commands will operate on. For example, if you type \c{get
filename.dat} then PSFTP will save the resulting file as
\c{filename.dat} in your local working directory.

To change your local working directory, use the \c{lcd} command. To
display your current local working directory, type \c{lpwd}.

\S{psftp-cmd-get} The \c{get} command: fetch a file from the server

To download a file from the server and store it on your local PC,
you use the \c{get} command.

In its simplest form, you just use this with a file name:

\c get myfile.dat

If you want to store the file locally under a different name,
specify the local file name after the remote one:

\c get myfile.dat newname.dat

This will fetch the file on the server called \c{myfile.dat}, but
will save it to your local machine under the name \c{newname.dat}.

\S{psftp-cmd-put} The \c{put} command: send a file to the server

To upload a file to the server from your local PC, you use the
\c{put} command.

In its simplest form, you just use this with a file name:

\c put myfile.dat

If you want to store the file remotely under a different name,
specify the remote file name after the local one:

\c put myfile.dat newname.dat

This will send the local file called \c{myfile.dat}, but will store
it on the server under the name \c{newname.dat}.

\S{psftp-cmd-regetput} The \c{reget} and \c{reput} commands:
resuming file transfers

If a file transfer fails half way through, and you end up with half
the file stored on your disk, you can resume the file transfer using
the \c{reget} and \c{reput} commands. These work exactly like the
\c{get} and \c{put} commands, but they check for the presence of the
half-written destination file and start transferring from where the
last attempt left off.

The syntax of \c{reget} and \c{reput} is exactly the same as the
syntax of \c{get} and \c{put}:

\c reget myfile.dat
\c reget myfile.dat newname.dat

\S{psftp-cmd-dir} The \c{dir} command: list remote files

To list the files in your remote working directory, just type
\c{dir}.

You can also list the contents of a different directory by typing
\c{dir} followed by the directory name:

\c dir /home/fred
\c dir sources

The \c{ls} command works exactly the same way as \c{dir}.

\S{psftp-cmd-chmod} The \c{chmod} command: change permissions on
remote files

PSFTP allows you to modify the file permissions on files on the
server. You do this using the \c{chmod} command, which works very
much like the Unix \c{chmod} command.

The basic syntax is \c{chmod modes file}, where \c{modes} represents
a modification to the file permissions, and \c{file} is the filename
to modify. For example:

\c chmod go-rwx,u+w privatefile
\c chmod a+r publicfile
\c chmod 640 groupfile

The \c{modes} parameter can be a set of octal digits in the Unix
style. (If you don't know what this means, you probably don't want
to be using it!) Alternatively, it can be a list of permission
modifications, separated by commas. Each modification consists of:

\b The people affected by the modification. This can be \c{u} (the
owning user), \c{g} (members of the owning group), or \c{o}
(everybody else - \q{others}), or some combination of those. It can
also be \c{a} (\q{all}) to affect everybody at once.

\b A \c{+} or \c{-} sign, indicating whether permissions are to be
added or removed.

\b The actual permissions being added or removed. These can be \c{r}
(permission to read the file), \c{w} (permission to write to the
file), and \c{x} (permission to execute the file, or in the case of
a directory, permission to access files within the directory).

So the above examples would do:

\b The first example: \c{go-rwx} removes read, write and execute
permissions for members of the owning group and everybody else (so
the only permissions left are the ones for the file owner). \c{u+w}
adds write permission for the file owner.

\b The second example: \c{a+r} adds read permission for everybody.

In addition to all this, there are a few extra special cases for
Unix systems. On non-Unix systems these are unlikely to be useful:

\b You can specify \c{u+s} and \c{u-s} to add or remove the Unix
set-user-ID bit. This is typically only useful for special purposes;
refer to your Unix documentation if you're not sure about it.

\b You can specify \c{g+s} and \c{g-s} to add or remove the Unix
set-group-ID bit. On a file, this works similarly to the set-user-ID
bit (see your Unix documentation again); on a directory it ensures
that files created in the directory are accessible by members of the
group that owns the directory.

\b You can specify \c{+t} and \c{-t} to add or remove the Unix
\q{sticky bit}. When applied to a directory, this means that the
owner of a file in that directory can delete the file (whereas
normally only the owner of the \e{directory} would be allowed to).

\S{psftp-cmd-del} The \c{del} command: delete remote files

To delete a file on the server, type \c{del} and then the filename:

\c del oldfile.dat

The \c{rm} command works exactly the same way as \c{del}.

\S{psftp-cmd-mkdir} The \c{mkdir} command: create remote directories

To create a directory on the server, type \c{mkdir} and then the
directory name:

\c mkdir newstuff

\S{psftp-cmd-rmdir} The \c{rmdir} command: remove remote directories

To remove a directory on the server, type \c{rmdir} and then the
directory name:

\c rmdir oldstuff

Most SFTP servers will probably refuse to remove a directory if the
directory has anything in it, so you will need to delete the
contents first.

\S{psftp-cmd-ren} The \c{ren} command: rename remote files

To rename a file on the server, type \c{ren}, then the current file
name, and then the new file name:

\c ren oldfile newname

The \c{rename} and \c{mv} commands work exactly the same way as
\c{ren}.

\S{psftp-cmd-pling} The \c{!} command: run a local Windows command

You can run local Windows commands using the \c{!} command. This is
the only PSFTP command that is not subject to the command quoting
rules given in \k{psftp-quoting}. If any command line begins with
the \c{!} character, then the rest of the line will be passed
straight to Windows without further translation.

For example, if you want to move an existing copy of a file out of
the way before downloading an updated version, you might type:

\c psftp> !ren myfile.dat myfile.bak
\c psftp> get myfile.dat

using the Windows \c{ren} command to rename files on your local PC.

\H{psftp-pubkey} Using public key authentication with PSFTP

Like PuTTY, PSFTP can authenticate using a public key instead of a
password. There are two ways you can do this.

Firstly, PSFTP can use PuTTY saved sessions in place of hostnames.
So you might do this:

\b Run PuTTY, and create a PuTTY saved session (see
\k{config-saving}) which specifies your private key file (see
\k{config-ssh-privkey}). You will probably also want to specify a
username to log in as (see \k{config-username}).

\b In PSFTP, you can now use the name of the session instead of a
hostname: type \c{psftp sessionname}, where \c{sessionname} is
replaced by the name of your saved session.

Secondly, PSFTP will attempt to authenticate using Pageant if Pageant
is running (see \k{pageant}). So you would do this:

\b Ensure Pageant is running, and has your private key stored in it.

\b Specify a user and host name to PSFTP as normal. PSFTP will
automatically detect Pageant and try to use the keys within it.

For more general information on public-key authentication, see
\k{pubkey}.