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April 2009

Chapter 2. Setting Up Cygwin

Chapter 2. Setting Up Cygwin Table of Contents Internet Setup Download Source Selecting an Install Directory Local Package Directory Connection Method Choosing Mirrors Choosing Packages Download and Installation Progress Icons Post-Install Scripts Troubleshooting Environment Variables Changing Cygwin's Maximum Memory NT security and usage of ntsec NT security Process privileges File permissions NT SIDs in Cygwin The mapping leak The ACL API New setuid concept Switching User Context Special values of user and group ids Customizing bash

Documentation

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Cygwin Documentation * Cygwin User's Guide * Cygwin API Reference * Frequently Asked Questions (FAQ) file for Cygwin. Some work remains to be done in documenting the Cygwin API. In addition to the Cygwin API Reference and information in the FAQ, you may want to check source code file winsup/cygwin.din which lists all of the Cygwin DLL exports. We have some preliminary docs on how to profile the Cygwin DLL. Information on building and using DLLs is here. Also note that there is quite a lot of useful information in the project mailing list archives.

November 2008

Virtual Machine Manager: Screenshots

Screenshots This page shows screenshots of various aspects of the management UI, relevant as of version virt-manager 0.5.4 There are separate pages showing screenshots for the different wizards: * Guest Creation Wizard * Virtual Network Wizard * Add Hardware Wizard

Virtual Machine Manager

About VMM's supporting tools The "Virtual Machine Manager" application (virt-manager for short package name) is a desktop user interface for managing virtual machines. It presents a summary view of running domains, their live performance & resource utilization statistics. The detailed view graphs performance & utilization over time. Wizards enable the creation of new domains, and configuration & adjustment of a domain's resource allocation & virtual hardware. An embedded VNC client viewer presents a full graphical console to the guest domain. About VMM's supporting tools The "Virt Install" tool (virt-install for short command name, virtinst for package name) is a command line tool which provides an easy way to provision operating systems into virtual machines. It also provides an API to the virt-manager application for its graphical VM creation wizard. The "Virt Clone" tool (virt-clone for short command name, virtinst for package name) is a command line tool for cloning existing inactive guests. It copies the disk images, and defines a config with new name, UUID and MAC address pointing to the copied disks. The "Virt Image" tool (virt-image for short command name, virtinst for package name) is a command line tool for installing guest operating systems based on a pre-defined master image. The image provides metadata describing the requirements of the operating system, minimal resource allocations, and pre-installed disk. The "Virtual Machine Viewer" application (virt-viewer for short package name) is a lightweight interface for interacting with the graphical display of virtualized guest OS. It uses GTK-VNC as its display capability, and libvirt to lookup the VNC server details associated with the guest. It is intended as a replacement for the traditional vncviewer client, since the latter does not support SSL/TLS encryption of x509 certificate authentication.

August 2008

redhat.com |

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CygwinTM Cygwin is a set of powerful tools to assist developers in migrating applications from UNIX®/Linux to the Microsoft® Windows®; platform. Cygwin delivers the open source standard Red Hat GNU gcc compiler and gdb debugger on Windows. In addition, it provides for a standard UNIX/Linux development environment on Windows including APIs and command shells. The Cygwin.dll library, included with Cygwin, delivers the interesting subset of UNIX SVR4, BSD, and POSIX APIs to enable quick ports of UNIX/Linux applications to the Windows platform. What Can Cygwin Do? With Cygwin, administrators can easily remote login to any PC, fix problems within a UNIX/Linux shell, on any Windows machine and run shell command scripts. Sophisticated shell command scripts can be created with standard shells, sed, awk, etc. Standard Windows command line tools can even be intermixed within the UNIX/Linux shell script environment to administer the Windows system. Over the years, UNIX/Linux system administrators have developed a large toolbox set of management scripts for their UNIX/Linux machines. Cygwin provides the ability to continue using these scripts on Windows machines. Why Use Cygwin? One of the largest problems developers face today is supporting their applications on disparate platforms. Windows workstations continue to be added to an environment already populated by Linux and other UNIX-based Operating Systems. Using Cygwin, developers can manage heterogeneous environments in a consistent, efficient way. Cygwin brings a standard UNIX/Linux shell environment, including many of its most useful commands to the Windows platform, so IT managers can effectively deploy trained staff, and leverage existing investments in UNIX/Linux source code and shell scripts. The Cygwin Contract A Cygwin Contract provides customers with: * The ability to distribute customer's applications without being bound by the GPL. Therefore, customers are not required to provide their applications in open source code form. * A license to distribute unlimited quantities of Cygwin libraries with customer's applications. * A robust set of tools for easily migrating applications from UNIX/Linux to Windows. * The latest Pentium optimized compiler tools.

Cygwin User's Guide

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Cygwin User's Guide The Cygwin User's Guide is now available in several formats: * Several HTML files, with Table of Contents * One large compressed HTML file * One compressed PDF file Alternatively, you may jump to a section that interests you: * Quick Start Guide for those more experienced with Windows * Quick Start Guide for those more experienced with UNIX * Help with setting up Cygwin with setup.exe

September 2007

Cygwin Information and Installation

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What Is Cygwin? # Cygwin is a Linux-like environment for Windows. It consists of two parts: A DLL (cygwin1.dll) which acts as a Linux API emulation layer providing substantial Linux API functionality. # A collection of tools which provide Linux look and feel. The Cygwin DLL currently works with all recent, commercially released x86 32 bit and 64 bit versions of Windows, with the exception of Windows CE. Note that the official support for Windows 95, Windows 98, and Windows Me will be discontinued with the next major version (1.7.0) of Cygwin. What Isn't Cygwin? # Cygwin is not a way to run native linux apps on Windows. You have to rebuild your application from source if you want it to run on Windows. # Cygwin is not a way to magically make native Windows apps aware of UNIX ® functionality, like signals, ptys, etc. Again, you need to build your apps from source if you want to take advantage of Cygwin functionality.

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