dpkg is a Go package for managing Debian packages. It provides functionalities to read and parse .deb files, list installed packages, and filter packages based on their names.
To install the dpkg package, use the following command:
go get github.com/go-apt/dpkgTo read the contents of a .deb file and retrieve its metadata, use the Info function:
// Create a new instance of the Dpkg struct
d := dpkg.NewDpkg()
// Read the contents of the .deb file
pkg, err := d.Info("/path/to/debFile")
if err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
// Print package name from the .deb file
fmt.Printf("Package from .deb file: %s\n", pkg.Fields["Package"])To validate if a file is a valid .deb package, use the IsDebFile function:
debFile := "/path/to/debFile"
// Validate if the file is a .deb package
if !d.IsDebFile(debFile) {
fmt.Fprintf(os.Stderr, "Error: %s is not a valid .deb file\n", debFile)
os.Exit(1)
}
fmt.Printf("%s is a valid .deb file\n", debFile)To list the installed packages and retrieve their metadata, use the List function:
// Create a new instance of the Dpkg struct
d := dpkg.NewDpkg()
// Read the contents of the /var/lib/dpkg/status file
packages, err := d.List()
if err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
// Print package names from installed packages
for _, p := range packages {
fmt.Printf("Package from dpkg status file: %s\n", p.Fields["Package"])
}To filter packages by name, use the ListGrep function:
// Create a new instance of the Dpkg struct
d := dpkg.NewDpkg()
// Filter packages by name
filteredPackages, err := d.ListGrep("apt")
if err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
// Print package names from filtered packages
for _, p := range filteredPackages {
fmt.Printf("Packages from Grep search: %s\n", p.Fields["Package"])
}