Linux Commands to Check the Network
Many Linux distributions provide a number of tools to simplify network configuration and connectivity verification. The following tools work with every distribution and allow you to administer your network from the command line:
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ping: Checks network connectivity
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ifconfig: Displays the configuration for a network interface
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traceroute: Shows the path taken to reach a host
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route: Displays the routing table and/or lets you configure it
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arp: Shows the address resolution table and/or lets you configure it
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netstat: Displays the status of the network
