> For the complete documentation index, see [llms.txt](https://joungkyun.gitbook.io/annyung-3-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://joungkyun.gitbook.io/annyung-3-user-guide/annyung3-package-catalog/annyung3-core-packages/pkg-core-libipcalc.md).

# libipcalc

## Description:

IPv4 관련 연산과 서브넷 연산을 위한 라이브러리

## Features:

1. 시작 IP와 마지막 IP가 속한 가장 작은 subnet 계산 가능

## Reference:

* <https://github.com/Joungkyun/libipcalc/blob/master/utils/netcalc.c>

## Dependencies:

* None

## Sub Packages:

* **libipcalc-devel** &#x20;

  libipcalc를 이용한 개발에 필요한 header 및 library file
* **libipcalc-utils**
  * netcalc

    ```bash
    [root@an3 ~]$ netcalc --help
    netcalc v1.0.1-dev: get network informations
    Usage: netcalc [option] ipaddress/[mask|prefix]
       netcalc [option] StartIP EndIP
    Options:
         -h, --help             print this message
         -b, --broadcast        print broadcast
         -n, --network          print network
         -m, --mask             print network mask
         -p, --prefix           print network prefix
         -s, --shell-format     print shell format
         -a, --all              print all
    [root@an3 ~]$
    ```
  * ip2long

    ```bash
    [root@an3 ~]$ ip2long --help
    ip2long v1.0.1-dev: Convert between IPv4 address and Long IP
    Usage: ip2long [option] ip-address|LongIP
    Options:
         -h, --help             print this message
         -v, --verbose          print both long ip and ipv4
    [root@an3 ~]$
    ```

## Related Packages:

* None