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To search and download a package missed from Cygwin I need to run setup.exe GUI each time, click many times and do other boring things.

Is there a way to do the same from Cygwin's command line directly? Like apt-get tools do.

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Excellent question! –  Luc M Nov 25 '10 at 1:08
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4 Answers

up vote 25 down vote accepted

Take a look here:

Aside from the other things, it gives the following list of options to setup.exe:

Command Line Options:
 -A --disable-buggy-antivirus           Disable known or suspected buggy anti
                    virus software packages during execution.
 -C --categories                        Specify entire categories to install
 -D --download                          Download from internet
 -d --no-desktop                        Disable creation of desktop shortcut
 -h --help                              print help
 -K --pubkey                            Path to extra public key file (gpg format)
 -L --local-install                     Install from local directory
 -l --local-package-dir                 Local package directory
 -n --no-shortcuts                      Disable creation of desktop and start menu
                    shortcuts
 -N --no-startmenu                      Disable creation of start menu shortcut
 -O --only-site                         Ignore all sites except for -s
 -P --packages                          Specify packages to install
 -p --proxy                             HTTP/FTP proxy (host:port)
 -q --quiet-mode                        Unattended setup mode
 -r --no-replaceonreboot                Disable replacing in-use files on next
                    reboot.
 -R --root                              Root installation directory
 -S --sexpr-pubkey                      Extra public key in s-expr format
 -s --site                              Download site
 -U --keep-untrusted-keys               Use untrusted keys and retain all
 -u --untrusted-keys                    Use untrusted keys from last-extrakeys
 -X --no-verify                         Don't verify setup.ini signatures

So setup.exe -P <package name> should do the job. Don't have cygwin right here, so test it to confirm it works as expected.

To search for a package, per:

you can use cygcheck -p:

  cygcheck -p REGEXP
  ...
  -p, --package-query  search for REGEXP in the entire cygwin.com package
                       repository (requires internet connectivity)

which produces output like (example from above site):

$ 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
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Caveat: if the update replaces cygwin1.dll, Cygwin programs will start to misbehave, and the Cygwin documentations recommend a reboot. So it's best to close all Cygwin programs, then run setup.exe directly from cmd (if you want to automate, use a batch file, not a shell script). –  Gilles Nov 25 '10 at 1:52
    
Thanks! Another thing I need is the ability to search, because I don't know yet what a package I want to download. Once I'll find the full list of packages I could grep it at least... –  Pavel Vlasov Nov 25 '10 at 12:18
    
See the edit for an example. –  icyrock.com Nov 25 '10 at 14:02
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An alternate solution would be to use the apt-cyg script available on Google Code.

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This performs an unattended upgrade of all cygwin components

cd C:\cygwin
wget -N http://cygwin.com/setup.exe
setup.exe --no-desktop --no-shortcuts --no-startmenu --quiet-mode

You should reboot after the upgrade is completed to prevent cygwin apps from misbehaving due to upgraded cygwin1.dll

--no-desktop Disable creation of desktop shortcut

--no-shortcuts Disable creation of desktop and start menu

--no-startmenu Disable creation of start menu shortcut

--quiet-mode Unattended setup mode

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Would you mind expanding on the answer to explain what each command does? –  Raystafarian Jul 27 '13 at 1:32
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The location for Cygwin's setup seems to have changes and split. Now you need either

wget http://cygwin.com/setup-x86.exe

or

wget http://cygwin.com/setup-x86_64.exe
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