MacBook – Why is this command for “Changing Where Screenshots Are Saved” failing

If you use sudo you change the default for the user you are sudoing into, in this case the root user. Just run the commands without sudo and you should be fine.

You can also clear any settings for a user with:

defaults delete com.apple.screencapture

You can test and log out if the system doesn’t realize the change was made. That’s usually better than killing the system UI server.

Are you copying the dollar sign into terminal? The dollar sign in writing, like in the document, is just a sign that it is on a new terminal line.

You can copy and paste these commands into terminal and it should work. I just tried it on my machine

echo 'export PATH=$PATH:$HOME/bin' >> ~/.bash_profile

or

echo 'export PATH=$PATH:/usr/local/bin' >> ~/.bash_profile

Then you can verify that they have worked by typing in this command

cat ~/.bash_profile

And you should see

export PATH=$PATH:$HOME/bin

or

export PATH=$PATH:/usr/local/bin

Depending on which one you used.

If you want the changes to also be applied to the currently running shell, you need to run

. ~/.bash_profile

as well.