Mac os - brew install unrar fails

Question

I'm trying to run brew install unrar on mac os Big Sur and I'm getting the following error:

Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/cask).
==> Updated Casks
Updated 1 cask.

==> Searching for similarly named formulae...
Error: No similarly named formulae found.
Error: No available formula or cask with the name "unrar".
==> Searching for a previously deleted formula (in the last month)...
Error: No previously deleted formula found.
==> Searching taps on GitHub...
Error: No formulae found in taps.

Please advise on how I can resolve this.

Answer 1

Use brew install rar to install both the rar and unrar binaries.

Homebrew formulae: https://formulae.brew.sh/cask/rar

See cask source for details:

https://github.com/Homebrew/homebrew-cask/blob/master/Casks/r/rar.rb

Answer 2

Just use brew install rar instead of brew install unrar

For rar files

Try using Homebrew...

In a terminal type:

brew install rar

Now to use it just navigate to your file directory and type:

• To view the rar file:

unrar l <filename>

• To extract the rar file in the same location:

unrar x <filename>

• To extract the rar file in the desired location:

unrar x <filename>

In case you face any permission issue: Developer cannot be verified.
'rar' cannot be opened because the developer cannot be verified.
Follow this process:
Open System Preferences -> Security and Privacy -> General -> Click the lock to make changes.

---

For zip files

In the terminal (at .zip location):

unzip <filename>

Answer 3

Go to mac's system settings/privacy&security/scroll down to security allow unrar app, you should see it as blocked.

Answer 4

Using the default rar formulae may cause permission errors in recent macOS versions. So you can install unrar using this custom formulae:

brew install carlocab/personal/unrar

See discussion about it here: Unrar has been removed, but I need unrar. Alternatives?.