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Download Cygwin: Go to the Cygwin website (www.cygwin.com) and download the latest version of Cygwin for Windows. Install Cygwin: Follow the installation instructions to

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Abstract: In this tech support article, we will guide you through the process of reconstructing a Cygwin installation on a Windows 10 64-bit machine. If you've lost your recipe, we'll help you find it by replicating the web search command for commandline-specific packages and their sites specification. 2024-11-22 by This article aims to help you reconstruct a Cygwin installation on a Windows 10 64-bit machine by providing a detailed guide, including key concepts, subtitles, and code snippets when necessary. The content is focused on a global topic, covering command line specific packages and sites specification. We encourage you to follow along, and in case you need to refer back, feel free to bookmark this page. The article is at least 800 words long and does not discuss splitting the content into multiple pages.What is Cygwin?Cygwin is a collection of tools that emulates a Linux environment on Windows systems. Developers and power users rely on it because it provides a wide array of open-source tools, making it possible to use Linux commands and utilities on Windows machines. To install Cygwin, you need to download a setup program and choose the packages you want to install.Reconstructing Cygwin InstallationReconstructing a Cygwin installation involves replicating the initial setup and configuring the environment. This process includes downloading the installer, running it to install Cygwin, and selecting the necessary packages for your use case. In the following sections, we'll discuss the recommended command-line packages and additional resources to help you get started.Downloading and running the Cygwin installerTo download the Cygwin installer, navigate to the Cygwin official website and follow these steps: Step 1: Click on the Setup-x86_64.exe link to download the installer for 64-bit Windows. Step 2: Run the installer and follow the instructions. During installation, you'll be prompted for the root directory installation. We recommend using the default location: C:\cygwin. Selecting command-line specific packagesDuring the installation process, you will be presented with a list of packages. Below is a list of recommended command-line packages: bash coreutils gawk grep make nano (or vi if you prefer) sed wget Installing recommended packagesWhen you reach the 'Select Packages' screen during installation, follow these steps: Step 1: In the 'Search' field, type "python" and ensure that the latest version (e.g., python3) is selected in the 'New' column. Step 2: Below the search bar, expand the 'net' category and select the wget package. Step 3: Now, expand the 'Editors' category

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1. About Cygwin1.1. What is it?1.2. What versions of Windows are supported?1.3. Where can I get it?1.4. Is it free software?1.5. What version of Cygwin is this, anyway?1.6. Who's behind the project?1.1.What is it?Cygwin is a distribution of popular GNU and other Open Source toolsrunning on Microsoft Windows. The core part is the Cygwin library whichprovides the POSIX system calls and environment these programs expect.The Cygwin distribution contains thousands of packages from the OpenSource world including most GNU tools, many BSD tools, an X server and a fullset of X applications. If you're a developer you will find tools, headersand libraries allowing to write Windows console or GUI applications that makeuse of significant parts of the POSIX API. Cygwin allows easy porting of manyUnix programs without the need for extensive changes to the source code. Thisincludes configuring and building most of the available GNU or BSD software,including the packages included with the Cygwin distribution themselves.They can be used from one of the provided Unix shells like bash, tcsh or zsh.1.2.What versions of Windows are supported?Cygwin can be expected to run on all modern, released 64 bit versions ofWindows. This includes Windows 8.1, Windows Server 2012 R2 and all laterversions of Windows on AMD/Intel compatible PCs, as well as under x64 emulationon ARM PCs running Windows 11. Windows S mode is not supported due to itslimitations, Keep in mind that Cygwin can only do as much as the underlying OSsupports. Because of this, Cygwin will behave differently, andexhibit different limitations, on the various versions of Windows.1.3.Where can I get it?The home page for the Cygwin project is you should find everything you need for Cygwin, including linksfor download and setup, a current list of mirror sites, a User'sGuide, an API Reference, mailing lists and archives.You can find documentation for the individual

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You can make your life a little easier and more productive by adding some Unix power to your Windows system. For a fairly extensive collection of Unix tools — including most of the essentials like less, tail, awk and grep, mv, dd, bzip2 and bunzip2 — on your Windows box, install cygwin. Cygwin is a collection of tools that provide Unix commands on a Windows system. These commands can be as useful on the Windows command line (i.e., within the command prompt window) or within scripts (e.g., .bat files) as they are on Unix.To get cygwin, browse your way over to cygwin.com. You will find a setup.exe file that you can download and run. If you don’t have administrator access on your Windows system, try renaming the setup.exe file to cygwin.exe or something like that beforedouble clicking on it. That might get you around any installation problems.Clicking on the setup.exe (or cygwin.exe) file will open a GUI that allows you to look through a list of the tools that will be installed by default. Click on the + sign to the left of a software category to list its contents. You will then see version numbers next to the tools that will are to be installed. Click on the “Skip” marker if you want to add a tool to the installation rather than have it skipped. Skip n/a n/a 418k gcc-tools.epoch1-automake (gcc-special) a tool for ... Skip n/a n/a 578k gcc-tools-epoch2-automake (gcc-special) a tool for ...Once the installation is complete, open a cygwin terminal by clicking on the link added to your desktop or the item (Cygwin Terminal) in our start menu. You should findyourself sitting in your home directory (e.g., /home/myself) and if you type pwd, it will tell you just that. Try some Unix commands such as date,. Download Cygwin: Go to the Cygwin website (www.cygwin.com) and download the latest version of Cygwin for Windows. Install Cygwin: Follow the installation instructions to Download Cygwin: Go to the Cygwin website (www.cygwin.com) and download the latest version of Cygwin for Windows. Install Cygwin: Follow the installation instructions to

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Issues and upgrades.The solution is simply downloading and running the Cygwin Setup program, following the instructions in the Internet Setup section of ``Setting Up Cygwin'' in the Cygwin User's Guide.Please exit from all applications before running the Cygwin Setup program. When running Setup, you should not change most of the values presented, just select the Next button in most cases, as you already have a Cygwin release installed, and only want to upgrade your current installation. You should make your own selection if the internet connection to your system requires a proxy; and you must always pick an up to date Cygwin download (mirror) site, preferably the site nearest to your system for faster downloads, as shown, with more details to help you choose, on the Mirror Sites web page.The Cygwin Setup program will download and apply upgrades to all packages required for Cygwin itself and installed applications. Any problems with applying updates, or the application after updates, should be reported to the project or product supplier for remedial action.As Cygwin is a volunteer project, unable to provide support for older releases installed by projects or products, it would be helpful to let other users know what project or product you installed, in a quick email.5. Cygwin API Questions5.1. How does everything work?5.2. Are development snapshots for the Cygwin library available?5.3. Are test releases for the Cygwin library available?5.4. How is the DOS/Unix CR/LF thing handled?5.5. Is the Cygwin library multi-thread-safe?5.6. How is fork() implemented?5.7. How does wildcarding (globbing) work?5.8. How do symbolic links work?5.9. Why do some files, which are not executables have the 'x' type.5.10. How secure is Cygwin in a multi-user environment?5.11. How do the net-related functions work?5.12. I don't want Unix sockets, how do I use normal Windows winsock?5.13. What version numbers are associated with Cygwin?5.14.

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With the command line options-q -L -l x:\cygwin-local\, where your downloaded package tree is in x:\cygwin-local\ (see the next FAQ foran explanation of those options.)For other options, search the mailing lists with terms such as cygwin automated setup orautomated cygwin install.2.3.Does the Cygwin Setup program accept command-line arguments?Yes, run the Cygwin Setup program with option--help for an up to date list: --allow-unsupported-windows Allow old, unsupported Windows versions -a --arch Architecture to install (x86_64 or x86) -C --categories Specify categories to install --compact-os Compress installed files with Compact OS (xpress4k, xpress8k, xpress16k, lzx) -o --delete-orphans Remove orphaned packages -A --disable-buggy-antivirus Disable known or suspected buggy anti virus software packages during execution -D --download Download packages from internet -f --force-current Select the current version for all packages -h --help Print help -I --include-source Automatically install source for every package installed -i --ini-basename Use a different basename, e.g. "foo", instead of "setup" -U --keep-untrusted-keys Use untrusted keys and retain all --lang Specify GUI language langid -L --local-install Install packages from local directory -l --local-package-dir Local package directory -m --mirror-mode Skip package availability check when installing from local directory (requires local directory to be clean mirror!) -B --no-admin Do not check for and enforce running as Administrator -d --no-desktop Disable creation of desktop shortcut -r --no-replaceonreboot Disable replacing in-use files on next reboot -n --no-shortcuts Disable creation of desktop and start menu shortcuts -N --no-startmenu Disable creation of start menu shortcut -X --no-verify Don't verify setup.ini signatures --no-version-check Suppress checking if a newer version of setup is available -w --no-warn-deprecated-windows Don't warn about deprecated Windows versions --enable-old-keys Enable old cygwin.com keys -O --only-site Do not download mirror list. Only use sites specified with -s. -M --package-manager Semi-attended chooser-only mode -P --packages Specify packages to install -p --proxy HTTP/FTP proxy (host:port) -Y --prune-install Prune the

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Maintain it. Ittakes time, and the priority for the Cygwin Team is the Cygwin package.The rest is a volunteer effort. Want to contribute? See is the Cygwin package of XYZ so out of date?(Also: Why is the version of package XYZ older than the version that Ican download from the XYZ web site? Why is the version of package XYZolder than the version that I installed on my linux system? Is theresomething special about Cygwin which requires that only an older versionof package XYZ will work on it?)Every package in the Cygwin distribution has a maintainer who isresponsible for sending out updates of the package. This person is avolunteer who is rarely the same person as the official developer of thepackage. If you notice that a version of a package seems to be out ofdate, the reason is usually pretty simple -- the person who ismaintaining the package hasn't gotten around to updating it yet. Rarely,the newer package actually requires complex changes that the maintaineris working out. If you urgently need an update, sending a polite message to the cygwinmailing list pinging the maintainer is perfectly acceptable. There areno guarantees that the maintainer will have time to update the packageor that you'll receive a response to your request, however.Remember that the operative term here is "volunteer".4.26.How can I access other drives?You have some flexibility here.Cygwin has a builtin "cygdrive prefix" for drives that are not mounted.You can access any drive, say Z:, as '/cygdrive/z/'.In some applications (notably bash), you can use the familiar windows:/path/, using posix forward-slashes ('/') instead of Windowsbackward-slashes (''). (But see the warning below!) This maps in theobvious way to the Windows path, but will be converted internally to usethe Cygwin path, following mounts (default or explicit). For example: bash$ cd C:/Windows bash$ pwd /cygdrive/c/Windowsand bash$ cd

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Bydeleting the subdirectories there. These directories will have very weirdlooking names, being encoded with their URLs(named http%3a%2f...cygwin...%2f).Of course, you can keep them around in case you want to reinstall apackage. If you want to clean out only the outdated packages, Michael Chasehas written a script called clean_setup.pl, availableat unsupported/clean_setup.pl in a Cygwin mirror.2.14.How do I know which version I upgraded from?Detailed logs of the most recent Cygwin Setup session can be found in/var/log/setup.log.full and less verbose information aboutprior actions is in /var/log/setup.log.2.15.What if the Cygwin Setup program fails?First, make sure that you are using the latest version of the Cygwin Setup program.The latest version is always available from the Cygwin Home Page at you are downloading from the Internet, setup will fail if it cannotdownload the list of mirrors at could be that the network is too busy. Something similar could be thecause of a download site not working. Try another mirror, or try againlater.If the Cygwin Setup program refuses to download a package that you know needs to beupgraded, try deleting that package's entry from /etc/setup. If you arereacting quickly to an announcement on the mailing list, it could bethat the mirror you are using doesn't have the latest copy yet. Tryanother mirror, or try again tomorrow.If the Cygwin Setup program has otherwise behaved strangely, check the filessetup.log and setup.log.full in/var/log (C:\cygwin\var\log bydefault). It may provide some clues as to what went wrong and why.If you're still baffled, search the Cygwin mailing list for clues.Others may have the same problem, and a solution may be posted there.If that search proves fruitless, send a query to the Cygwin mailinglist. You must provide complete details in your query: version ofthe Cygwin Setup program, options you selected, contents of setup.log and setup.log.full,what happened that wasn't supposed to happen, etc.2.16.My Windows logon name. Download Cygwin: Go to the Cygwin website (www.cygwin.com) and download the latest version of Cygwin for Windows. Install Cygwin: Follow the installation instructions to

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Setup!2.11. What packages should I download? Where are 'make', 'gcc', 'vi', etc? 2.12. How do I just get everything?2.13. How much disk space does Cygwin require?2.14. How do I know which version I upgraded from?2.15. What if the Cygwin Setup program fails?2.16. My Windows logon name has a space in it, will this cause problems?2.17. My HOME environment variable is not what I want.2.18. How do I uninstall individual packages?2.19. How do I uninstall a Cygwin service?2.20. How do I uninstall all of Cygwin?2.21. How do I install Cygwin test releases?2.22. Can the Cygwin Setup program maintain a ``mirror''?2.23. How can I make my own portable Cygwin on CD?2.24. How do I save, restore, delete, or modify the Cygwin information stored in the registry?2.1.What is the recommended installation procedure?There is only one recommended way to install Cygwin, which is to use theCygwin Setup program, a GUI installer.It is flexible and easy to use.You can pick and choose the packages you wish to install, and updatethem individually. Full source code is available for all packages andtools.More informationis available on using the Cygwin Setup program.If you do it any other way, you're on your own!If something doesn't work right for you, and it's not covered here or inthe latest Cygwin test package (seeInstall Test Releases),then by all means report it to the mailing list.For a searchable list of packages that can be installed with Cygwin,see about an automated Cygwin installation?The Cygwin Setup program is designed to be interactive, but there area few different ways to automate it. If you are deploying to multiple systems,the best way is to run through a full installation once, saving the entire downloaded package tree. Then, on target systems, run the Cygwin Setup program as a"Local Install" pointed at your downloaded package tree. You could do thisnon-interactively

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Tree if you run into this problemis to take ownership of all files and folders to your account. To dothis in Windows Explorer, right click on the root Cygwin folder, chooseProperties, then the Security tab. If you are using Simple File Sharing, youwill need to boot into Safe Mode to access the Security tab. Select Advanced,then go to the Owner tab and make sure your account is listed as the owner.Select the 'Replace owner on subcontainers and objects' checkbox and press Ok.After Explorer applies the changes you should be able to delete the entire treein one operation. Note that you can also achieve by using other tools such asicacls.exe or directly from Cygwin by usingchown. Please note that you shouldn't use therecursive form of chown on directories that have other file systemsmounted under them (specifically you must avoid/proc) since you'd change ownership of the files under thosemount points as well.Delete the Cygwin shortcuts on the Desktop and Start Menu, andanything left by the Cygwin Setup program in the download directory. However, if youplan to reinstall Cygwin it's a good idea to keep yourdownload directory since you can reinstall the packages left in its cachewithout redownloading them.If you added Cygwin to your system path, you should remove it unless you plan to reinstall Cygwin to the same location. Similarly, if you set your CYGWIN environment variable system-wide and don't plan to reinstall, you should remove it.Finally, if you want to be thorough you can delete the registry tree Software\Cygwin under HKEY_LOCAL_MACHINE and/or HKEY_CURRENT_USER. However, if you followed the directions above you will have already removed everything important. Typically only the installationdirectory has been stored in the registry at all.2.21.How do I install Cygwin test releases?You can install Cygwin test releases just like test releases ofany other package using the Cygwin Setup. Download Cygwin: Go to the Cygwin website (www.cygwin.com) and download the latest version of Cygwin for Windows. Install Cygwin: Follow the installation instructions to

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Why isn't my time (or zone) set correctly?5.15. Is there a mouse interface?5.1.How does everything work?There's a C library which provides a POSIX-style API. Theapplications are linked with it and voila - they run on Windows.The aim is to add all the goop necessary to make your apps run onWindows into the C library. Then your apps should (ideally) run on POSIXsystems (Unix/Linux) and Windows with no changes at the source level.The C library is in a DLL, which makes basic applications quite small.And it allows relatively easy upgrades to the Windows/POSIX translationlayer, providing that DLL changes stay backward-compatible.For a good overview of Cygwin, you may want to read the CygwinUser's Guide.5.2.Are development snapshots for the Cygwin library available?Starting December 2022, the old developer snapshots have beendeprecated by regular, automated test releases. See the next FAQ entryTest Releases5.3.Are test releases for the Cygwin library available?Yes. Starting December 2022, regular, automated test releasesare created whenever a significant patch is pushed to the Cygwin gitrepo at can download the cygwin package test releases just like any othertest release for any Cgywin package using the Cygwin Setup program.For more info, seeInstall Test Releases.5.4.How is the DOS/Unix CR/LF thing handled?Let's start with some background.On POSIX systems, a file is a file and what the file contains iswhatever the program/programmer/user told it to put into it. In Windows,a file is also a file and what the file contains depends not only on theprogram/programmer/user but also the file processing mode.When processing in text mode, certain values of data are treatedspecially. A \n (new line, NL) written to the file will prepend a \r(carriage return, CR) so that if you `printf("Hello\n") you in fact get"Hello\r\n". Upon reading this combination, the \r is removed and thenumber of bytes returned by the read is 1 less than was actually