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pseudo(1) [osf1 man page]

pseudo(1)						      General Commands Manual							 pseudo(1)

pseudo - Starts a non-STREAMS pty interface for a STREAMS device SYNOPSIS
pseudo [-l] [-shell shell] OPTIONS
Starts a shell process as the login shell. By default, the command starts this process as an interactive shell. Specifies the shell to be started. By default, the command starts the shell set by the SHELL environment variable. DESCRIPTION
The pseudo command provides an appropriate interface for STREAMS tty devices that are installed on systems configured to use the non- STREAMS pty driver. The pseudo command opens a pair of master and slave pty devices, and starts a shell process. The command's options allow you to override the default shell specification and to specify that the process be started as a login shell. NOTES
The pseudo command is available only when one or more of the Tru64 UNIX optional subsets with worldwide support software are installed on your system. In order for the pseudo command to provide a non-STREAMS pty interface for STREAMS devices, the system must be configured to use the non- STREAMS pty driver. If the system is configured to use the STREAMS pty driver, the command provides a STREAMS pty interface. SEE ALSO
Commands: stty(1) Interfaces: pty(7) pseudo(1)

Check Out this Related Man Page

nstrpty(5)							File Formats Manual							nstrpty(5)

nstrpty - maximum number of STREAMS-based pseudo terminals (pts) VALUES
Default Allowed Values DESCRIPTION
is the number of STREAMS-based pseudo terminal (pts) drivers that a system can support. The pty driver provides support for a device-pair called a pseudo terminal. A pseudo terminal is a pair of character devices, a master device, and a slave device. These allow communica- tion between an application process and a server process. When sending data to pty devices (such as windows), a pty device must exist for every window that is open at any given time. should be set to a value that is equal to, or greater than, the number of pty devices on the system that will be using STREAMS-based I/O pipes. Using a parameter value significantly larger than the number of ptys is not recommended. is used when creating data structures in the kernel to support STREAMS-based ptys, and an excessively large value wastes kernel memory space. Who Is Expected to Change This Tunable? Users with the privilege. See privileges(5) for more information about privileged access on systems that support fine-grained privileges. Restrictions on Changing Changes to this tunable take effect at the next reboot. When Should the Value of This Tunable Be Raised? This tunable value needs to be raised when the system runs out of ptys. What Are the Side Effects of Raising the Value? More system memory is used. When Should the Value of This Tunable Be Lowered? This value should be lowered when a minimal system is being created. What Are the Side Effects of Lowering the Value? The system may run out of ptys. WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of HP-UX. Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation, some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun- able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was factory installed on your system, see at AUTHOR
was developed by HP. SEE ALSO
kctune(1M), privileges(5), pts(7). Tunable Kernel Parameters nstrpty(5)
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