apt-cyg is a Cygwin package manager. It includes a command-line installer for Cygwin which cooperates with Cygwin Setup and uses the same repository.
l[ist][a[ll]] [pkg...]
Search for package names that match regexp. If no package names are provided in the command line, all installed packages will be listed. If listall is used, searches the master package list (setup.ini).
s[how] pkg...
Display information on given package name(s).
l[ist]f[iles] pkg...
List all files owned by a given package. Multiple packages can be specified on the command line.
i[nstall] pkg...
Install package(s) and any dependencies.
so[urce] pkg...
Retrieve package source(s) from the server into package directory created under current directory and unpack under the package directory.
do[wnload] pkg...
Retrieve package(s) from the server, but do not install/upgrade anything.
re[move] pkg...
Remove package(s) from the system.
de[pends] pkg...
Produce a tree of all dependencies for a package.
rd[epends] pkg...
Produce a tree of packages that depend on the named package.
se[arch][a[ll]] file...
Search for packages that own the specified file(s). The path can be relative or absolute, and one or more files can be specified. If searchall is used searches cygwin.com for packages that own the specified file(s).
cat[egor[y|ies]] [cat...]
Display all packages that are members of a named category. If no category is provided in the command line, all categories used will be listed.
u[pdate]
Download a fresh copy of the master package list (setup.ini) from the mirror.
m[irror] [URL]
Set the mirror: a full URL to a location where the database, packages, and signatures for this repository can be found. If no URL is provided, display the current mirror.
cac[he] [directory]
Set the package cache directory. Unix and Windows forms are accepted, as well as absolute or regular paths. If no directory is provided, display current cache. If a package to install is not found in the cache directory, it will be downloaded.
-b|-c|--b[uild]|--c[ompile]
With source: install any build dependencies; if cygport is part of the package, include cygport and any of its build dependencies, and build package using cygport; otherwise try to configure, then try to make; if cygport is not part of the package, build dependencies may be missing, and need to be installed manually.
-d|--d[ownload[-only]
With source: just download and do not unpack source package.
-?|-h|--h[elp]
Display usage and exit.
-i|--i[nstalled]
With l[ist]: display only installed packages.
-n|--nod[eps]
Specify this option to skip all dependency checks, and not download or install packages on which specified packages are dependent.
-p|--nop[ick]
Internal option for install of a package dependency.
-s|--nos[cripts]
Specify this option to skip running any preremove or postinstall scripts. Used internally during install to defer running postinstall scripts until all requested packages and dependencies have been installed.
-u|--u[pgradable]
With list: display only outdated packages.
-V|-v|--v[ersion]
Display version and exit.
apt-cyg is a simple script. To download and install:
curl -JORSs https://github.com/BrianInglis/apt-cyg/raw/master/apt-cyg
or
lynx -source https://github.com/BrianInglis/apt-cyg/raw/master/apt-cyg > apt-cyg
or
wget -N https://github.com/BrianInglis/apt-cyg/raw/master/apt-cyg
and
install apt-cyg /usr/local/sbin/
Example use of apt-cyg:
/usr/local/sbin/apt-cyg install nano