on - execute command on remote host with environment similar to local
on [-i | -n] [-d] host [command [argument] ... ]
on executes a command on a remote host, using an environment similar
to that of the invoking user where:
host specifies the name of the host on which to execute the
command specifies the command to execute on host
If command is not specified, on starts a shell on host. argument ...
is a list of arguments for command.
The user's environment variables are copied to the remote host, and
the file system containing the user's current working directory is NFS
mounted on the remote host (see nfs(7)). The command is executed on
the remote host in the user's current working directory.
Commands using relative path names that reference file system objects
within the user's current working file system have the same behavior
as running the command on the client. The behavior of commands using
relative path names that cross the file system boundary or commands
using absolute path names depends on the organization of the remote
host's file system.
Implicit and explicit use of environment variables may also cause a
command's behavior to be dependent on the organization of the remote
host's file system. For example, the $PATH environment variable
usually contains absolute path names.
Standard input, output and error of the remote command are connected
to the appropriate file descriptors on the client.
The remote execution daemon (rexd) does not allow root to execute a
The signals SIGINT, SIGTERM, and SIGQUIT are propagated to the remote
command. SIGTSTP and SIGSTOP are ignored by the remote command. All
other signals are delivered to the on command.
In order to execute a remote command, the remote host must be
configured to execute rexd (see rexd(1M)).
on recognizes the following options:
Hewlett-Packard Company - 1 - HP-UX Release 11i: November 2000
-i Interactive mode. This option is required for commands
that must communicate with a terminal such as vi, ksh, or
more. Terminal mode changes are propagated to the rexd
server. The standard input for an interactive on command
must be a tty device. The -i and -n options are mutually
-d Debug mode. Print diagnostic messages during startup of
the on command. These messages are useful for detecting
configuration problems if the on command to a specific
host is failing.
-n No input mode. This option causes the remote command to
get end-of-file (EOF) when it reads from standard input,
instead of connecting the standard input of the on
command to the standard input of the remote command. The
-n option is required when running commands in the
background. The -n and -i options are mutually
on: unknown host host
The host name host was not found in the hosts database.
on: cannot connect to server on host
The host host is down, unreachable on the network, or not
on: can't find current_dir
A problem occurred trying to find the user's current working
on: can't locate mount point for current_dir
A problem occurred trying to determine the mount point of
the user's current working directory (current_dir).
on: standard input (stdin) is not a tty
The standard input (stdin) of the on command with the -i
option is not a tty device.
on server: rexd: message
Errors that occur on the server server are propagated back
to the client. These messages are documented in the
DIAGNOSTICS section of rexd(1M).
on was developed by Sun Microsystems, Inc.
Hewlett-Packard Company - 2 - HP-UX Release 11i: November 2000