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     updater(1)                                             updater(1)



     NAME
          updater - update files between two machines

     SYNOPSIS
          updater [key] local remote ...

     DESCRIPTION
          updater updates files between two machines.

          One of the following key letters must be included:

          t  Take files from the remote machine, updating the local
             machine.

          p  Put files from the local machine onto the remote machine,
             updating the remote machine.

          d  List the difference between files on the local and remote
             machines.

          The following key letters are optional:

          u  Update a file only if it exists on both machines; this is
             the default condition.

          r  Replace a file if it did not exist on the destination
             machine.

          local refers to the local directory name.

          remote refers to the remote directory names.  Only one re-
          mote name can be specified if the p (put) key is specified.

     ALGORITHM
          Open /dev/tty0 to the remote machine.

          stty the local port and send a stty command to the remote
          machine to condition both ends of the connection.

          Send a

          cd remote ; sumdir . | sort +2 > /tmp/rXXXXX

          to remote machine for each remote system;

          cd local ; sumdir . | sort > /tmp/lXXXXX

          for local machine.

          Wait for remote to complete.

          Take /tmp/rXXXXX.





     April, 1990                                                     1

     updater(1)                                             updater(1)



          Do a comparison between the local and the union of the re-
          motes:

             exists on remote only:

                If both the t and r keys are specified, take the file;
                otherwise list the file.

             exists on local only:

                If both p and r keys are specified, put the file; oth-
                erwise list the file.

             exist on both but different:

                If t key is specified, take the file.

                If p key is specified, put the file.

                If d key is specified, list the file.

             same:

                nothing

     EXAMPLES
               updater d ...

          uses /dev/tty0 to communicate with a remote machine and com-
          pares directories on the remote and local systems.

     FILES
          /usr/bin/updater






















     2                                                     April, 1990