// IsPackageInstalled uses dpkg-query to determine if the `packageName`
// package is installed.
func IsPackageInstalled(packageName string) bool {
_, err := utils.RunCommand("dpkg-query", "--status", packageName)
return err == nil
}
// run the command and return the combined output.
func run(command string, args ...string) (output string, err error) {
logger.Tracef("%s %v", command, args)
output, err = utils.RunCommand(command, args...)
logger.Tracef("output: %v", output)
return output, err
}