Procedure to copy files between a cleint and server. Currently
implemented using scp (Secure CoPy). Capable of file transfer in either
direction based on "op" argument.
Procedure to execute commands on a remote host. The routine supports
a variety of implementations. The simplest UNIX utility is of course 'rsh'.
The more secure (recommended) version of this command is 'ssh'. Each requires
that the remote system have the appropriate daemon running.
Procedure to get an environment variable from a remote host
Procedure to retrieve a small file from a remote system
Procedure to determine remote file type
Procedure to check for existence of a file on a remote system
Procedure to open a pipe to an SSH process
Procedure to read data from a pipe
Procedure to check whether a specified remote file is a writable
object. If the remote file exists and is not a directory, the procedure
returns 0. If the remote file exists and is a directory, or if the
remote file does not exist, the procedure returns 1.
Procedure to write a data set to a remote file