remsh.1 (2010 09)

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remsh(1) remsh(1)

remsh otherhost -n "command 1>&- 2>&- &"

(See remshd(1M) and sh(1)). If your login shell on the remote system is csh, use the following form

instead:

remsh otherhost -n "sh -c \"command 1>&- 2>&- &\""

RETURN VALUE

If remsh fails to set up the secondary socket connection, it returns 2. If it fails in some other way, it

returns 1. If it fully succeeds in setting up a connection with

remshd, it returns 0 once the remote com-

mand has completed. Note that the return value of

remsh bears no relation to the return value of the

remote command.

DIAGNOSTICS

Besides the errors listed below, errors can also be generated by the library functions

rcmd() and

rresvport(). In the case of IPv6 systems, the library functions

rcmd() and rresvport() are

replaced by

rcmd_af() and rresvport_af()

; respectively, and can generate errors (see rcmd(3N)

and rcmd_af (3N)). These errors are preceded by the name of the library function that generated them.

remsh can produce the following diagnostic messages:

Error! could not retrieve authentication type.

Please notify sys admin.

There are two authentication mechanisms used by

remsh. One authentication mechanism is

based on Kerberos and the other is not. The type of authentication mechanism is obtained

from a system ﬁle which is updated by

inetsvcs_sec (see inetsvcs_sec (1M)). If the system

ﬁle does not contain known authentication types, the above error is displayed.

rlogin: ...

Error in executing rlogin (rlogin is executed when the user does not specify any com-

mands to be executed). This is followed by the error message specifying why the execution

failed.

shell/tcp: Unknown service

The ‘‘shell’’ service speciﬁcation is not present in the /etc/services

ﬁle.

Can’t establish stderr

remsh cannot establish secondary socket connection for stderr.

: ...

Error in executing system call. Appended to this error is a message specifying the cause of the

failure.

There is no entry for you (user ID uid) in /etc/passwd

Check with the system administrator to see if your entry in the password ﬁle has been deleted

by mistake.

Kerberos-speciﬁc errors are listed in sis(5).

WARNINGS

For security reasons, the /etc/hosts.equiv and .rhosts ﬁles should exist, even if empty, and they

should be readable and writable only by the owner. Note also that all information, including any pass-

words asked for, is passed unencrypted between the two hosts.

remsh is run with an interactive command, it hangs.

DEPENDENCIES

remsh is the same service as rsh on BSD systems. The name was changed due to a conﬂict with the

existing System V command rsh (restricted shell).

AUTHOR

remsh was developed by the University of California, Berkeley.

FILES

/usr/hosts/* for version of the command invoked only with hostname