how to use remsh to duplicate all...

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Old 01-14-2008
how to use remsh to duplicate all...

hi ,

Any idea how to use remsh to duplicate whatsoever ( / ) from host1 to host2 across network with root?

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dsh(1)							      Dancer Tools reference							    dsh(1)

dsh - Distributed shell, or dancer's shell SYNOPSIS
dsh [-m machinename | -a | -g groupname] [-r remoteshellname] [-c | -w | -i | -F forklimit ] -- commandline DESCRIPTION
dsh executes command remotely on several different machines at the same time. An utility to effectively do a for a in $(seq 1 10); do rsh $a command; done in bourne shell. OPTIONS
The options available are as follows. --verbose | -v Give verbose output of the execution process. --quiet | -q Makes output quieter. --machine | -m [machinename[,machinename]*] Adds machinename to the list of machines that the command is exeuted. The syntax of machinename allows username@machinename where remote shell is invoked with the option to make it of username. From version 0.21.4, it is possible to specify in the format of username@machinename,username@machinename,username@machinename so that multiple hosts can be specified with comma-delimited values. --all | -a Add all machines found in /etc/dsh/machines.list to the list of machines that the specified command is executed. --group groupname | -g groupname Add all machines found in /etc/dsh/group/groupname to the list of machines that the specified command is executed. If groupname is on the form @netgroup then the machines in the given netgroup is used to specify the list of machines to execute on. --file machinefile | -f machinefile Add all machines found in the specified file to the list of machines that the specified command is executed. The file should list one machine specification per line (with the same syntax as the machinename argument). Lines starting with "#" are ignored. From version 0.21.4, Specifying the same machine several times using any of the machine specification options will result in multi- ple invocations merged into one. --remoteshell shellname | -r shellname Execute remote shell shellname as the remote shell. Usually any of "rsh", "remsh" or "ssh" are available --remoteshellopt rshoption | -o rshoption Add one option rshoption to the list of options passed on to the remote shell. --help | -h Output help message and exits. --wait-shell | -w Executes on each machine and waits for the execution finishing before moving on to the next machine. --concurrent-shell | -c Executes shell concurrently. --show-machine-names | -M Prepends machine names on the standard output. Useful to be used in conjunction with the --concurrent-shell option so that the out- put is slightly more parsable. --hide-machine-names | -H Do not prepend machine names on the standard output. --duplicate-input | -i Duplicates the input to dsh process to individual process that are remotely invoked. Needs to have --concurrent-shell set. Due to limitations in current implementation, it is only useful for running shell. Terminate the shell session with ctrl-D. --bufsize | -b [buffer-size in bytes] Sets the buffer size used in replicating input for --duplicate-input option. --version | -V Outputs version information and exits. --num-topology | -N Changes the current topology from 1. 1 is the default behavior of spawning the shell from one node to every node. Changing the num- ber to a value greater than 2 would result in dsh being spawned on other machines as well. --forklimit | -F fork limit Similar to -c with a limit on the number of simultaneous connections. dsh will wait before creating new connection if the limit is reached. Useful when the number of nodes to be accessed is going somewhere above 200, and using -N option is not possible. EXIT STATUS
The first non-zero exit code of child processes is returned, or zero if none returned non-zero exit code. 1 if error is found in command-line specifications. 2 if signal is received from child processes. EXAMPLES
dsh -a w Shows list of users logged in on all workstations. dsh -r ssh -a -- w Shows list of users logged in on all workstations, and use ssh command to connect. (It should be of note that when using ssh, ssh- agent is handy.) dsh -r ssh -m node1 -m node2 -c -- 'echo $HOSTNAME $(cat/proc/loadavg )' Shows the load average of machines node1 and node2. FILES
/etc/dsh/machines.list | $(HOME)/.dsh/machines.list List of machine names to be used for when -a command-line option is specified. /etc/dsh/group/groupname | $(HOME)/.dsh/group/groupname List of machine names to be used for when -g groupname command-line option is specified. /etc/dsh/dsh.conf | $(HOME)/.dsh/dsh.conf Configuration file containing the day-to-day default. BUGS
There should be a dcp for copying files to remote systems. Configuration files should really be able to do something more than it does now. AUTHOR
Junichi Uekawa ( Upstream page is available at SEE ALSO
rsh(1), ssh(1), remsh(1), dsh.conf(5) Debian-Beowulf/Dancer 2007 Aug 15 dsh(1)