/subnetCalculator.sh

Primary LanguageShell

subnetCalculator.sh

Uses an IP address and a network mask to calculate information about the subnet.

Either displays information in the CLI, or prints the following documents to a user-set path:

  • ipInfo.txt {Basic summary of the subnet}
  • ipRange.json {Usable JSON file with all host IP addresses listed}
  • ReadMe.txt {Gives information on potential host address issues.}

Current Bugs:

  • Classful netmasks (/8, /16, & /24) result in bad data and script failure. Avoid these masks until further notice.

Misc. Notes

  • ShellCheck command used for code review purposes: shellcheck --color=always --exclude=SC2039,SC2086,SC2116 [FILEPATH]

    • Omitted error code summary:
      • SC2039:
        • "In POSIX sh, string indexing is undefined."
        • "In POSIX sh, string replacement is undefined."
        • "In POSIX sh, brace expansion is undefined."
      • SC2086: "Double quote to prevent globbing and word splitting.""
      • SC2116: "Useless echo? Instead of cmd $(echo foo), just use cmd foo."

  • Website used to verify accuracy of calculations: Online Subnet Calculator