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Full Discussion: Interactive Mode?
Top Forums UNIX for Dummies Questions & Answers Interactive Mode? Post 26380 by Nomad on Friday 16th of August 2002 06:00:25 AM
Old 08-16-2002
Question Interactive Mode?

Smilie Can anyone please tell me how to get into Interactive Mode?

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zlogin(1)							   User Commands							 zlogin(1)

zlogin - enter a zone SYNOPSIS
zlogin [-CE] [-e c] [-l username] zonename zlogin [-ES] [-e c] [-l username] zonename utility [argument...] DESCRIPTION
The zlogin utility is used by the administrator to enter an operating system zone. Only a superuser operating in the global system zone can use this utility. zlogin operates in one of three modes: Interactive Mode If no utility argument is given and the stdin file descriptor for the zlogin process is a tty device, zlogin operates in interactive mode. In this mode, zlogin creates a new pseudo terminal for use within the login session. Programs requiring a tty device, for exam- ple, vi(1), work properly in this mode. In this mode, zlogin invokes login(1) to provide a suitable login session. Non-Interactive Mode If a utility is specified, zlogin operates in non-interactive mode. This mode can be useful for script authors since stdin, stdout, and stderr are preserved and the exit status of utility is returned upon termination. In this mode, zlogin invokes su(1M) in order to set up the user's environment and to provide a login environment. Console Mode If the -C option is specified, the user is connected to the zone console device and zlogin operates in console mode. The zone console is available once the zone is in the installed state. Connections to the console are persistent across reboot of the zone. OPTIONS
The following options are supported: -C Connects to the zone console. -e c Specifies a different escape character, c, for the key sequence used to access extended functions and to disconnect from the login. The default escape character is the tilde (~). -E Disables the ability to access extended functions or to disconnect from the login by using the escape sequence character. -l username Specifies a different username for the zone login. If you do not use this option, the zone username used is "root". This option is invalid if the -C option is specified. -S "Safe" login mode. zlogin does minimal processing and does not invoke login(1) or su(1M). The -S option can not be used if a username is specified through the -l option, and cannot be used with console logins. This mode should only be used to recover a damaged zone when other forms of login have become impossible. Escape Sequences Lines that you type that start with the tilde character (~) are "escape sequences". The escape character can be changed using the -e option. ~. Disconnects from the zone. This is not the same as a logout, because the local host breaks the connection with no warning to the zone's end. SECURITY
Once a process has been placed in a zone other than the global zone, the process cannot change zone again, nor can any of its children. OPERANDS
The following operands are supported: zonename The name of the zone to be entered. utility The utility to be run in the specified zone. argument... Arguments passed to the utility. EXIT STATUS
In interactive and non-interactive modes, the zlogin utility exits when the command or shell in the non-global zone exits. In non-interac- tive mode, the exit status of the remote program is returned as the exit status of zlogin. In interactive mode and console login mode, the exit status is not returned. zlogin returns a 0 exit status as long as no connection-related error occurred. In all modes, in the event that a connection to the zone cannot be established, the connection fails unexpectedly, or the user is lacking sufficient privilege to perform the requested operation, zlogin exits with status 1. To summarize, the following exit values are returned: 0 Successful entry. 1 Permission denied, or failure to enter the zone. Any Return code from utility, or from su(1M) if operating in non-interactive mode. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWzoneu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
login(1), vi(1), su(1M), zoneadm(1M), zonecfg(1M), attributes(5), zones(5) NOTES
zlogin fails if its open files or any portion of its address space corresponds to an NFS file. This includes the executable itself or the shared libraries. SunOS 5.10 14 May 2004 zlogin(1)

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