cygcheck — List system information, check installed packages, or query package database
cygcheck [-v] [-h]
cygcheck -c [-d] [
cygcheck -s [-r] [-v] [-h]
cygcheck -e [--requires] [--build-reqs]
cygcheck -i [--inst] [--curr] [--prev] [--test] [--deps] [--build-deps]
cygcheck -l [
cygcheck -h | -V
At least one command option or a PROGRAM is required, as shown above. PROGRAM list library (DLL) dependencies of PROGRAM -c, --check-setup show installed version of PACKAGE and verify integrity (or for all installed packages if none specified) -d, --dump-only just list packages, do not verify (with -c) -s, --sysinfo produce diagnostic system information (implies -c -d) -r, --registry also scan registry for Cygwin settings (with -s) -k, --keycheck perform a keyboard check session (must be run from a plain console only, not from a pty/rxvt/xterm) -e, --search-package list all available packages matching PATTERN PATTERN is a glob pattern with * and ? as wildcard chars search selection specifiers (multiple allowed):\n\ --requires list packages depending on packages matching PATTERN --build-reqs list packages depending on packages matching PATTERN when building these packages only the most recent available releases are checked to collect requirements info -i, --info-package print full info on packages matching PATTERN, installed and available releases PATTERN is a glob pattern with * and ? as wildcard chars info selection specifiers (multiple allowed): --inst only print info on installed package release --curr only print info on most recent available release --prev only print info on older, still available releases --test only print info on test releases --deps additionally print package dependencies --build-deps additionally print package build dependencies -f, --find-package find the package to which FILE belongs -l, --list-package list contents of PACKAGE (or all packages if none given) -p, --package-query search for REGEXP in the entire cygwin.com package repository (requires internet connectivity) --delete-orphaned-installation-keys Delete installation keys of old, now unused installations from the registry. Requires the right to change the registry. -v, --verbose produce more verbose output -h, --help annotate output with explanatory comments when given with another command, otherwise print this help -V, --version print the version of cygcheck and exit Notes: -c, -f, and -l only report on packages that are currently installed. -i and -e report on available packages, too. To search for files within uninstalled Cygwin packages, use -p. The -p REGEXP matches package names, descriptions, and names of files/paths within all packages.
The cygcheck program is a diagnostic utility for dealing with Cygwin programs. If you are familiar with dpkg or rpm, cygcheck is similar in many ways. (The major difference is that setup.exe handles installing and uninstalling packages; see the section called “Internet Setup” for more information.)
-c option checks the version and status of
installed Cygwin packages. If you specify one or more package names,
cygcheck will limit its output to those packages, or
with no arguments it lists all packages. A package will be marked
Incomplete if files originally installed are no longer
present. The best thing to do in that situation is reinstall the package
with setup.exe. To see which files are missing, use
-v option. If you do not need to know the status
of each package and want cygcheck to run faster, add
-d option and cygcheck will
only output the name and version for each package.
If you list one or more programs on the command line,
cygcheck will diagnose the runtime environment of that
program or programs, providing the names of DLL files on which the
program depends. If you specify the
cygcheck will give general system information. If you
list one or more programs on the command line and specify
-s, cygcheck will report on
-e option allows to seach for available
packages in the Cygwin distribution.
a glob pattern, using * and ? as wildcard characters, just as in
PATTERN is searched for in
the package name and the summary of a package.
options allow to search for packages which have a certain dependency,
either at runtime or at build time.
-i option prints a lot of information
available for installed packages, as well as for available packages
in the Cygwin distribution.
PATTERN is a glob
pattern, using * and ? as wildcard characters, just as in filename
PATTERN is compared against the
package name as well as against the combined package name and version.
With additional info selectors,
--test, allow to specify that only information
in terms of installed, current latest available, older available,
as well as test packages respectively, is requested.
options allow to print additional dependency information.
Example 3.3. Example cygcheck -e/-i usage
$ cygcheck -e grep grep : search for regular expression matches in text files grep-debuginfo : Debug info for grep grepmail : search mailboxes for mail matching an expression pdfgrep : Command-line utility for searching text in PDFs pdfgrep-debuginfo : Debug info for pdfgrep sgrep : Search indexed text regions like SGML,XML and HTML files $ cygcheck -i --curr --deps grep Latest available package: ------------------------- Name : grep Version : 3.8 Release : 2 Architecture: x86_64 Size : 401340 (392 K) Source : grep-3.8-2-src.tar.xz Dependencies: bash, cygwin, libintl8, libpcre2_8_0 Summary : search for regular expression matches in text files Description : GNU grep searches one or more input files for lines containing a match to a specified pattern. By default, grep outputs the matching lines. The GNU implementation includes several useful extensions over POSIX.
options fetch info from a distribution db file. This file will be
downloading on demand and refreshed if it's older than 24 hours.
-f option helps you to track down which
package a file came from, and
-l lists all files in a
package. For example, to find out about
/usr/bin/less and its package:
Example 3.4. Example cygcheck -f/-l usage
$ cygcheck -f /usr/bin/less less-381-1 $ cygcheck -l less /usr/bin/less.exe /usr/bin/lessecho.exe /usr/bin/lesskey.exe /usr/man/man1/less.1 /usr/man/man1/lesskey.1
-h option prints additional helpful messages
in the report, at the beginning of each section. It also adds table
column headings. While this is useful information, it also adds some to
the size of the report, so if you want a compact report or if you know
what everything is already, just leave this out.
-v option causes the output to be more
verbose. What this means is that additional information will be reported
which is usually not interesting, such as the internal version numbers of
DLLs, additional information about recursive DLL usage, and if a file in
one directory in the PATH also occurs in other directories on the PATH.
-r option causes cygcheck
to search your registry for information that is relevant to Cygwin
programs. These registry entries are the ones that have "Cygwin" in the
name. If you are paranoid about privacy, you may remove information from
this report, but please keep in mind that doing so makes it harder to
diagnose your problems.
In contrast to the other options that search the packages that are
installed on your local system, the
-p option can be
used to search the entire official Cygwin package repository. It takes as
argument a Perl-compatible regular expression which is used to match
package names, package descriptions, and path/filenames of the contents
of packages. This feature requires an active internet connection, since
it must query the
cygwin.com web site. In fact, it is
equivalent to the search that is available on the Cygwin package listing
For example, perhaps you are getting an error because you are missing a certain DLL and you want to know which package includes that file:
Example 3.5. Searching all packages for a file
$ cygcheck -p 'cygintl-2\.dll' Found 1 matches for 'cygintl-2\.dll'. libintl2-0.12.1-3 GNU Internationalization runtime library $ cygcheck -p 'libexpat.*\.a' Found 2 matches for 'libexpat.*\.a'. expat-1.95.7-1 XML parser library written in C expat-1.95.8-1 XML parser library written in C $ cygcheck -p '/ls\.exe' Found 2 matches for '/ls\.exe'. coreutils-5.2.1-5 GNU core utilities (includes fileutils, sh-utils and textutils) coreutils-5.3.0-6 GNU core utilities (includes fileutils, sh-utils and textutils)
Note that this option takes a regular expression, not a glob or
wildcard. This means that you need to use
.* if you
want something similar to the wildcard
* commonly used
in filename globbing. Similarly, to match the period character you should
\. since the
. character in a
regexp is a metacharacter that will match any character. Also be aware
that the characters such as
are shell metacharacters, so they must be either escaped or quoted, as in
the example above.
The third example above illustrates that if you want to match a whole
filename, you should include the
/ path seperator. In
the given example this ensures that filenames that happen to end in
ls.exe such as
ncftpls.exe are not
shown. Note that this use does not mean "look for packages with
ls in the root directory," since the
/ can match anywhere in the path. It's just there to
anchor the match so that it matches a full filename.
By default the matching is case-sensitive. To get a case insensitive
match, begin your regexp with
(?i) which is a
PCRE-specific feature. For complete documentation on Perl-compatible
regular expression syntax and options, read the perlre
manpage, or one of many websites such as
that document the Perl language.
The cygcheck program should be used to send information about your system for troubleshooting when requested. When asked to run this command save the output so that you can email it, for example:
cygcheck -s -v -r -h > cygcheck_output.txt
Each Cygwin DLL stores its path and installation key in the registry. This allows troubleshooting of problems which could be a result of having multiple concurrent Cygwin installations. However, if you're experimenting a lot with different Cygwin installation paths, your registry could accumulate a lot of old Cygwin installation entries for which the installation doesn't exist anymore. To get rid of these orphaned registry entries, use the cygcheck --delete-orphaned-installation-keys command.