netchk (rubygems): # Netchk  Simple tool to troubleshoot internet connectivity issues. This tool verifies:  - your computer has at least one IP address - you have at least one DNS configured - you can reach the configured nameservers - the nameservers can resolve hosts  Finally, some ICMP ping statistics are presented with average durations and error rates.   ## Installation  ```sh gem install netchk ```  ## Usage  Just run `netchk` from your terminal and basic diagnosis will start showing you progress and any error if present.  Note: On Linux system, this gem requires `sudo` to perform the ICMP ping operations. On macOS, this is not needed.  You also can configure how netchk verifies your connections by configuring a `~/.netchk.yaml` or `~/.netchk.yml` file like below.  ```yaml # Settings to test DNS server connectivity. dns:   # Path to resolv.conf file to check presence and connectivity of DNS.   # Path should be absolute to avoid issues when running netchk   # from different directories.   resolv.conf: /etc/resolv.conf  # Settings to test DNS resolution. resolv:   # Path to resolv.conf file to use for testing DNS resolution.   # Path should be absolute to avoid issues when running netchk   # from different directories. It is advised to be the same   # as dns.resolv.conf.   resolv.conf: /etc/resolv.conf   # The list of domains to test for DNS resolution.   domains:     - google.com     - youtube.com     - facebook.com   # Settings to test icmp ping. icmp:   # A list of hosts to ping with ICMP. It is advised to use   # IP addresses instead of domains to rule out any issues with   # DNS resolution, which is tested separately.   hosts:     - 1.1.1.1     - 8.8.8.8   # The number of ping to issue each host.   count: 20   # The duration in seconds to wait between each ping.   # Setting this value too low might cause timeouts.   interval: 0.2 ```       Each value is optional. If one is missing the default value will be used. The file above shows the default values.  ## Contributing  Bug reports and pull requests are welcome on GitHub at https://github.com/moray95/netchk. 
Keywords: dns|ip|networking|ping|ruby