The command cssh opens an administration console and an xterm to all specified
hosts. Any text typed into the administration console is replicated to all
windows. All windows may also be typed into directly.

This tool is intended for (but not limited to) cluster administration where the
same configuration or commands must be run on each node within the cluster.
Performing these commands all at once via this tool ensures all nodes are kept
in sync.

Connections are opened via ssh so a correctly installed and configured ssh
installation is required. If, however, the program is called by "crsh" then the
rsh protocol is used (and the communications channel is insecure), or by "ctel"
then telnet is used.

Extra caution should be taken when editing system files such as /etc/inet/hosts
as lines may not necessarily be in the same order. Assuming line 5 is the same
across all servers and modifying that is dangerous. Better to search for the
specific line to be changed and double-check before changes are committed.