ipcalc: add page

[Alex-Gekas]

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page(s) have at most 8 examples.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known): 1.0.0

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This pull request adds a new TLDR page for the ipcalc command-line utility.

ipcalc is used to calculate and display network information based on an IP address and subnet, such as:

• Netmask
• Broadcast address
• CIDR notation
• Host range

The page includes common usage examples for:

• Basic address lookup
• CIDR notation
• Custom netmask input
• Short-format output
• Version info

This PR addresses issue #16125.

[MachiavelliII]

Hi Alex, it seems that github.com/ipcalc/ipcalc doesn't exist.

[MachiavelliII]

Suggested change

	> More information: <https://github.com/ipcalc/ipcalc>.
	> More information: <https://manned.org/ipcalc>.

[Managor]

This is the address found on the official ipcalc website https://github.com/kjokjo/ipcalc

[MachiavelliII]

This is the official page jodies.de/ipcalc. It's already linked in the footer of manned.org/ipcalc

[Managor]

I mean that jodies.de/ipcalc has a link to that github page. But looking at them, it's better to link manned. At least it has the options listed.

[Managor]

ipcalc.md already exists in the linux folder https://github.com/tldr-pages/tldr/blob/main/pages/linux/ipcalc.md. I recommend moving that and then merging these two. Plain ipcalc {{192.168.0.1}} is for example missing in the existing page.

[Managor]

Hmmm. Note that the existing ipcalc.md is greatly outdated

[Managor]

Suggested change

	`ipcalc -c {{192.168.0.1/24}}`
	`ipcalc {{[-c|--class]}} {{192.168.0.1/24}}`

Either use long options by themselves or use option placeholders.

[Alex-Gekas]

Hi @Managor and @MachiavelliII — I’ve just pushed the changes.
Moved the page from linux/ to common/
Merged in the two original examples from the old linux/ipcalc.md
Removed the outdated Linux page
Replaced the broken GitHub link with https://jodies.de/ipcalc
Updated the option example to use the long form --class as suggested
Let me know if there’s anything else to tweak. Thanks!

[sebastiaanspeck]

Hi @Managor and @MachiavelliII — I’ve just pushed the changes.

Unfortunately I don't see any push

[Managor]

You probably forgot to push the local changes.

[Managor]

@Alex-Gekas Can you fix the issues in this PR? You have not pushed any changes.