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 Home » Freeware Downloads » Command-Line Utilities » Cygwin v3.2.0-1   
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Cygwin v3.2.0-1

Cygwin is:

a large collection of GNU and Open Source tools which provide functionality similar to a Linux distribution on Windows.
a DLL (cygwin1.dll) which provides substantial POSIX API functionality.

Cygwin is not:

a way to run native Linux apps on Windows. You must rebuild your application from source if you want it to run on Windows.
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.

General installation notes

When installing packages for the first time, setup*.exe does not install every package. Only the minimal base packages from the Cygwin distribution are installed by default, which takes up about 100 MB.

Clicking on categories and packages in the setup*.exe package installation screen allows you to select what is installed or updated.

Individual packages like bash, gcc, less, etc. are released independently of the Cygwin DLL, so the Cygwin DLL version is not useful as a general Cygwin release number. The setup*.exe utility tracks the versions of all installed components and provides the mechanism for installing or updating everything available from this site for Cygwin.

Once you've installed your desired subset of the Cygwin distribution, setup*.exe will remember what you selected so rerunning the program will update your system with any new package releases.

On Windows Vista and later, setup*.exe will check by default if it runs with administrative privileges and, if not, will try to elevate the process. If you want to avoid this behaviour and install under an unprivileged account just for your own usage, run setup*.exe with the --no-admin option.

Q: Is there a command-line installer?

A: Yes and no. The setup*.exe program understands command-line arguments which allow you to control its behavior and choose individual packages to install. While this provides some functionality similar to such tools as apt-get or yum it is not as full-featured as those package managers.
Q: Why not use apt, yum, my favourite package manager, etc.?

A: The basic reason for not using a more full-featured package manager is that such a program would need full access to all of Cygwin's POSIX functionality. That is, however, difficult to provide in a Cygwin-free environment, such as exists on first installation. Additionally, Windows does not easily allow overwriting of in-use executables so installing a new version of the Cygwin DLL while a package manager is using the DLL is problematic.
Q: How do I install everything?

A: You do not want to do this! This will install an enormous number of packages that you will never use, including debuginfo and source for every package.

If you really must do this, clicking on the "Default" label next to the "All" category to change it to "Install" will mark every Cygwin package for installation. Be advised that this will download and install tens of gigabytes of files to your computer.

This is a new major release.

What's new:

- Revamped pseudo console support. Conditionally activating it only when
a non-cygwin application is run.

- New C11 threads API: call_once, cnd_broadcast, cnd_destroy, cnd_init,
cnd_signal, cnd_timedwait, cnd_wait, mtx_destroy, mtx_init, mtx_lock,
mtx_timedlock, mtx_trylock, mtx_unlock, thrd_create, thrd_current,
thrd_detach, thrd_equal, thrd_exit, thrd_join, thrd_sleep, thrd_yield,
tss_create, tss_delete, tss_get, tss_set.

- In cygwin console, new thread which handles special keys/signals such
as Ctrl-Z (VSUSP), Ctrl-\ (VQUIT), Ctrl-S (VSTOP), Ctrl-Q (VSTART) and
SIGWINCH has been introduced. There have been a long standing issue
that these keys/signals are handled only when app calls read() or
select(). Now, these work even if app does not call read() or select().

- fchmodat(2) now has limited support for the AT_SYMLINK_NOFOLLOW flag.

- Cygwin now recognizes native Windows AF_UNIX sockets (as regular
files, not as socket files). This allows tools like 'ls' and 'rm'
to work.

What changed:

- Allow ~5000 child processes per process on 64 bit, ~1200 child processes
per process on 32 bit. So far, only 256 child processes per process were

- A few FAQ updates.

- Have tmpfile(3) make use of Win32 FILE_ATTRIBUTE_TEMPORARY via open(2)

flag to allow simpler unlink of files with DOS readonly flags set.

- getdtablesize(3), sysconf(_SC_OPEN_MAX), and
getrlimit(RLIMIT_NOFILE) now return the true limit on the number of
open descriptors, 3200. Previously they returned the current size
of Cygwin's internal file descriptor table, which can grow

- facl(2) now fails with EBADF on a file opened with O_PATH.

- Allow to start Windows Store executables via their "app execution
aliases". Handle these aliases (which are special reparse points)
as symlinks to the actual executables.

Bug Fixes

- Iterate at least 4 times over pthread_key_t destructors per POSIX.

- The pthread_yield declaration in pthread is now visible by default
or when defining _BSD_SOURCE, too.

- Fix SEGV in modfl call.

- Fix a collision of offical and internally used file flags.

- Fix assertion failure on an invalid path under /proc/<pid>/fd/.

- Fix crash on stat(2)'ing /dev/ptmx on 32 bit.

- Fix return value of sqrtl on negative infinity.

- Fix a path handling problem if there is a WSL symlink in PATH.

- Fix a bug in fstatat(2) on 32 bit that could cause it to return garbage.

- Fix the errno when a path contains .. and the prefix exists but is
not a directory.

- Fix the return value when ptsname_r(3) is called with a bad file descriptor

- Fix path handling in case the Cygwin installation dir is accessed via
a Windows junction point.

- Fix potential handle leaks when dup'ing descriptors

- Fix a bug that could cause fstat(2) to return incorrect results on a FIFO.

- Fix some system calls on AF_LOCAL sockets that are not socket files.

- Fix access to block devices under /proc/sys.

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Downloads Views Developer Last Update Version Size Type Rank
3,578 7,853 Cygwin <img src=""border="0"> Apr 04, 2021 - 15:35 3.2.0-1 1.29MB EXE 5/5, out of 55 Votes.
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Cygwin  v3.2.0-1  
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