NAME

       parallel-scp — parallel file upload program

SYNOPSIS

       parallel-scp  [-vAr]  [-h  hosts_file] [-H [user@]host[:port]] [-l user] [-p par] [-o outdir] [-e errdir]
       [-t timeout] [-O options] [-x args] [-X arg] local remote

DESCRIPTION

       parallel-scp is a program for copying files in parallel to a number of hosts using the scp  program.   It
       provides features such as passing a password to scp, saving output to files, and timing out.

OPTIONS

       -h host_file
       --hosts host_file
              Read  hosts  from  the given host_file.  Lines in the host file are of the form [user@]host[:port]
              and can include blank lines and comments (lines beginning with "#").  If multiple host  files  are
              given (the -h option is used more than once), then parallel-scp behaves as though these files were
              concatenated  together.  If a host is specified multiple times, then parallel-scp will connect the
              given number of times.

       -H     [user@]host[:port]
       --host [user@]host[:port]
       -H     "[user@]host[:port] [ [user@]host[:port ] ... ]"
       --host "[user@]host[:port] [ [user@]host[:port ] ... ]"
              Add the given host strings to the list of hosts.  This option may be given multiple times, and may
              be used in conjunction with the -h option.

       -l user
       --user user
              Use the given username as the default for any host entries that don't specifically specify a user.

       -p parallelism
       --par parallelism
              Use the given number as the maximum number of concurrent connections.

       -t timeout
       --timeout timeout
              Make connections time out after the given number of seconds.  With a value of 0, parallel-scp will
              not timeout any connections.

       -o outdir
       --outdir outdir
              Save  standard  output  to  files  in  the  given  directory.    Filenames   are   of   the   form
              [user@]host[:port][.num]  where  the  user  and  port  are only included for hosts that explicitly
              specify them.  The number is a counter that is incremented each time for hosts that are  specified
              more than once.

       -e errdir
       --errdir errdir
              Save  standard  error to files in the given directory.  Filenames are of the same form as with the
              -o option.

       -x args
       --extra-args args
              Passes extra SSH command-line arguments (see the ssh(1) man page for more  information  about  SSH
              arguments).  This option may be specified multiple times.  The arguments are processed to split on
              whitespace,  protect  text  within quotes, and escape with backslashes.  To pass arguments without
              such processing, use the -X option instead.

       -X arg
       --extra-arg arg
              Passes a single SSH command-line argument (see the ssh(1) man page for more information about  SSH
              arguments).   Unlike  the  -x  option,  no processing is performed on the argument, including word
              splitting.  To pass multiple command-line arguments, use the option once for each argument.

       -O options
       --options options
              SSH options in the format used in the SSH configuration file (see the ssh_config(5) man  page  for
              more information).  This option may be specified multiple times.

       -A
       --askpass
              Prompt  for a password and pass it to ssh.  The password may be used for either to unlock a key or
              for password authentication.  The password is transferred in a fairly secure manner (e.g., it will
              not show up in argument lists).  However,  be  aware  that  a  root  user  on  your  system  could
              potentially intercept the password.

       -v
       --verbose
              Include error messages from ssh with the -i and -e options.

       -r
       --recursive
              Recursively copy directories.

TIPS

       The  ssh_config  file  can  include  an arbitrary number of Host sections.  Each host entry specifies ssh
       options which apply only to the given host.  Host  definitions  can  even  behave  like  aliases  if  the
       HostName  option  is included.  This ssh feature, in combination with parallel-ssh host files, provides a
       tremendous amount of flexibility.

EXIT STATUS

       The exit status codes from parallel-scp are as follows:

       0      Success

       1      Miscellaneous error

       2      Syntax or usage error

       3      At least one process was killed by a signal or timed out.

       4      All processes completed, but at least one scp process reported an error (exit  status  other  than
              0).

AUTHORS

       Written by Brent N. Chun <bnc@theether.org> and Andrew McNabb <amcnabb@mcnabbs.org>.

       https://github.com/lilydjwg/parallel-ssh

SEE ALSO

       ssh(1), ssh_config(5), parallel-ssh(1), parallel-rsync(1), parallel-slurp(1), parallel-nuke(1),

                                                January 24, 2012                                 parallel-scp(1)