$ cygcheck.exe   -c
Cygwin Package Information
Package              Version            Status
_update-info-dir     00592-1            OK
alternatives         1.3.29a-1          OK
ash                  20040127-3         OK
base-files           3.7-1              OK
base-passwd          2.2-1              OK
bash                 3.2.33-18          OK
binutils             20060817-1         OK
bzip2                1.0.3-2            OK
colordiff            1.0.7-1            OK
coreutils            6.10-1             OK
corkscrew            2.0-1              OK
crypt                1.1-1              OK
cygrunsrv            1.21-1             OK
cygutils             1.3.2-1            OK
cygwin               1.5.25-11          OK
cygwin-doc           1.4-4              OK
diffutils            2.8.7-1            OK
editrights           1.01-2             OK
expat                1.95.8-2           OK
findutils            4.3.13-1           OK
gawk                 3.1.6-1            OK
gcc                  3.4.4-3            OK
gcc-core             3.4.4-3            OK
gcc-g++              3.4.4-3            OK
gcc-mingw-core       20050522-1         OK
gcc-mingw-g++        20050522-1         OK
grep                 2.5.1a-4           OK
groff                1.18.1-2           OK
gzip                 1.3.12-2           OK
less                 382-1              OK
libbz2_1             1.0.3-2            OK
libdb4.5             4.5.20.2-2         OK
libexpat0            1.95.8-2           OK
libgdbm4             1.8.3-8            OK
libiconv2            1.11-1             OK
libintl2             0.12.1-3           OK
libintl3             0.14.5-1           OK
libintl8             0.15-1             OK
libncurses8          5.5-3              OK
libpcre0             7.2-1              OK
libpopt0             1.6.4-4            OK
libreadline6         5.2.12-10          OK
login                1.9-7              OK
make                 3.81-2             OK
man                  1.6e-1             OK
mingw-runtime        3.14-1             OK
minires              1.01-1             OK
openssh              4.7p1-2            OK
openssl              0.9.8g-1           OK
perl                 5.8.8-4            OK
rebase               2.4.3-1            OK
run                  1.1.10-1           OK
rxvt                 20050409-7         OK
sed                  4.1.5-2            OK
tar                  1.19.90-1          OK
termcap              20050421-1         OK
terminfo             5.5_20061104-1     OK
texinfo              4.8a-1             OK
tzcode               2007h-2            OK
unzip                5.52-2             OK
vim                  7.1-1              OK
w32api               3.11-1             OK
which                2.19-1             OK
zlib                 1.2.3-2            OK