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After I upgrade to Sonoma, the command "sudo nano /etc/hosts" not working, when I save file, it show me "Cannot open file for writing: Operation not permitted". So how to edit hosts file in Sonoma?
MacBook Pro 14″, macOS 14.0
I find a solution for this, in finder, if the hosts file has a lock on it, use this command to unlock it:
sudo chflags nouchg,noschg /etc/hosts
then it will be editable by root, so you can use "sudo nano /etc/hosts".
BTY, you can find hosts file in finder by this command: "open /etc".
I find a solution for this, in finder, if the hosts file has a lock on it, use this command to unlock it:
sudo chflags nouchg,noschg /etc/hosts
then it will be editable by root, so you can use "sudo nano /etc/hosts".
BTY, you can find hosts file in finder by this command: "open /etc".
[Edited]
While in terminal, try just to cd /etc, then type cat hosts or ls -l host*
Just to verify the file is actually there and can be viewed and seen.
Your command is correct so its either missing or has bad permissions or even corrupted.
You can also type whereis nano
to make sure it's there. Can you type nano by itself and have it open just to verify it's intact?
Yes, "cat /etc/hosts" can show it's content, it's just same as before the update, sudo vi /etc/hosts or sudo vim /etc/hosts is work too, but when I save with ":w!", it show me "hosts" E212: Can't open file for writing
Randall_2023 wrote:
Glad you figured it out. Further on open.....if you type open /etc/hosts it will open the hosts file in TextEdit.
No one can, or should attempt to, edit the hosts file in TextEdit.
linfeee wrote:
You mean homebrew lock my hosts file?
I have no idea what Homebrew does. I just know that when people come to this forum complaining about some basic, 30 year-old command line technique suddenly doesn't work, Homebrew is always involved. I mean every single single.
I think the most likely explanation is that those Homebrew binaries like bash are not working properly after your upgrade to Sonoma. A system or Xcode upgrade is often the trigger for a catastrophic Homebrew failure. l
Unfortunately, I have no idea how to fix it. In most cases, people install Homebrew because they don't know their way around the command line environment. So when that breaks, they are helpless to fix it. All they can do is erase the hard drive and reinstall the operating system. That will work, but you have to remember to be careful during the restore from Time Machine. If you just restore everything, it will restore everything broken again. You have to restore only user accounts and user files. Do not restore any apps, software, system settings, or "other files". You will need to manually reinstall any 3rd party apps that you really need.
I strongly recommend checking with each developer to ensure that said 3rd party apps work on Sonoma. Some will say "yes". Some will say "no". Some won't respond at all. Some will ask you "what is this MacOs X Sonoma?" Only reinstall software made people who respond with a "yes".
The only other thing I can think of at the moment is to try editing it while in safemode.
Start up your Mac in safe mode - Apple Support (English)
The hosts file exists, with "rw" permission, but I can't change it. In finder there is a lock on hosts file.
I check the content, it's just same as before the update.
Can you see inside if you type cat /etc/hosts
Also have you tried using vi rather than nano?
I got that, but It's so inconvenient🤣
Your hosts file had the wrong flags set for it. None of that would be necessary on a standard install. Something altered your hosts file and set those file flags.
Glad you figured it out. Further on open.....if you type open /etc/hosts it will open the hosts file in TextEdit.
Where did you get the current version of bash on a Mac?
Just kidding! I know where you got it. And that's also where you got this crazy permissions problem.
Another win for Homebrew!
You mean homebrew lock my hosts file?
How to edit hosts file in Sonoma?
