zsh command not found ntp for macOS - Shell/Bash

If you're a macOS user running Zsh (Z shell) as your default shell and encounter the error message saying command not found: ntp when trying to use the ntp command, this guide will help you resolve the issue.

Possible Causes

The ntp command, which stands for Network Time Protocol, is used to synchronize your computer's clock with a remote time server over the internet. The error message command not found: ntp can occur due to a number of reasons, including:

• ntp not being installed on your system
• ntp not being included in your shell's $PATH environment variable
• ntp being blocked by your firewall or network settings

Solution

To resolve the zsh command not found ntp issue on macOS, follow the steps below:

1. Open terminal on your macOS machine.

2. Install ntp by running the command:

brew install ntp

3. Once ntp is installed, set up the ntp service to start automatically on boot with the command:

sudo brew services start ntp

4. Verify that ntp is running by running the command:

brew services list

5. If ntp is not in your $PATH environment variable, add it with the command:

export PATH="/usr/local/sbin:$PATH"

6. If you're behind a firewall, ensure that the ntp port is open. By default, ntp uses UDP port 123.

7. Test the ntp command by running the command:

ntp -q pool.ntp.org

This command will query the pool.ntp.org time server and synchronize your computer's clock with it.

Conclusion

In this guide, we've shown you how to resolve the zsh command not found ntp issue on macOS. By following the above steps, you should be able to use the ntp command without any issues.