Enter administrator commands in Terminal on Mac. You must be an administrator or root user, also called superuser, to execute many of the commands used to manage a server. For example, if you’re not an administrator or a root user, entering the shutdown command gives you an error. Due to recent Mac catalina update, by default terminal uses zsh. Zsh does not use.bashprofile. It uses /.zshrc file. Open up this file and add source /.bashprofile. Restart Terminal and it should work. Make sure your /.bashprofile file does not have source /.bashprofile line. Airport – the Little Known Command Line Wireless Utility for Mac. Hidden from the casual Mac user is a spiffy command line utility that allows you to view, configure, and troubleshoot your Mac’s wireless connection, entirely from the Terminal of MacOS and Mac OS X. This command has a help file but is otherwise but not much documentation. Sudo killall VDCAssistant;sudo killall AppleCameraAssistant. Type your admin password to authenticate, and then try to use your webcam again. MacOS should relaunch any processes your webcam relies on to function. If you don’t feel comfortable using Terminal, just restart your Mac instead of running the above command. Restart Your Mac.

Mounting volumes on macOS can be done using Disk Utility.app. For some reason, Apple decided not to show EFI partitions (among others such as Preboot, Recovery, etc) in Disk Utility.app. In this article, I will show you how to mount these volumes using command line (Terminal).

Listing all volumes

To list all volumes (partitions), use diskutil list.

As you can see, there are 2 physical drives, both containing EFI partition.

If you compare it to Disk utility.app, it is rather brief.

Mounting a volume

Sudo Command Not Found Mac Catalina

To mount a volume, use sudo diskutil mount DiskIdentifier|DeviceNode|VolumeName.

Sudo Apt-get Command Not Found Mac Catalina

This will mount the volume to /Volumes/<VolumeName>. If this mount point is already in use, a number will be added at the end (e.g: /Volumes/EFI 1).

The sudo command in the beginning is very import, omitting it causes error message like

Mounting a volume to specified mount point

You can mount a volume to a different mount point (directory) using -mountPoint option. Beware, target mount point must exist.

Unmounting a volume

Unmounting a volume is as easy as mounting a volume, use diskutil umount DiskIdentifier|DeviceNode|VolumeName.