Ubuntu; Error: Permission denied @ dir_chdir - /root

[Motzumoto]

Additional Info

• I am using Windows Subsystem for Linux

Output of brew config

HOMEBREW_VERSION: 4.1.22
ORIGIN: https://github.com/Homebrew/brew
HEAD: 251a098fbf1c02ca95f53b4806e5b6da8d5e4a80
Last commit: 5 days ago
Core tap JSON: 01 Dec 05:06 UTC
HOMEBREW_PREFIX: /home/linuxbrew/.linuxbrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 10
Homebrew Ruby: 2.6.10 => /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/2.6.10_1/bin/ruby
CPU: 10-core 64-bit broadwell
Clang: N/A
Git: 2.25.1 => /bin/git
Curl: 7.68.0 => /bin/curl
Kernel: Linux 5.4.0-164-generic x86_64 GNU/Linux
OS: Ubuntu 20.04.6 LTS (focal)
Host glibc: 2.31
/usr/bin/gcc: N/A
/usr/bin/ruby: N/A
glibc: N/A
gcc@11: N/A
gcc: N/A
xorg: N/A

Output of brew doctor

motz@vmi1218828:/root$ brew doctor
Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: No developer tools installed.
Install Clang or run `brew install gcc`.
Error: Permission denied @ dir_chdir - /root

Description of issue

Installing gcc through brew gives me the following output:

motz@vmi1218828:/root$ brew install gcc
Running `brew update --auto-update`...
==> Downloading https://ghcr.io/v2/homebrew/core/gcc/manifests/13.2.0-1
Already downloaded: /home/motz/.cache/Homebrew/downloads/1070e0c204c0143186700b3f10737c381298fe114bdb26969e3cc6455b83e6e5--gcc-13.2.0-1.bottle_manifest.json
==> Fetching dependencies for gcc: [email protected], glibc, gmp, isl, mpfr, libmpc, lz4, xz, zlib, zstd and binutils
==> Downloading https://ghcr.io/v2/homebrew/core/linux-headers/5.15/manifests/5.15.140
Already downloaded: /home/motz/.cache/Homebrew/downloads/083e011e56b4363c7e6aedf0d0d3358658201ed65381d174d1e00d4d8894ea66--linux-headers@5.15-5.15.140.bottle_manifest.json
==> Fetching [email protected]
==> Downloading https://ghcr.io/v2/homebrew/core/linux-headers/5.15/blobs/sha256:590e6a9dd8dccf0a190f402b23043c6c926c2cbd0938abce5e12fa38538f35ce
Already downloaded: /home/motz/.cache/Homebrew/downloads/ce69b72b1c4f10c133e8b07beaa5fe9980277b0a2442079797bc9b06a8037221--linux-headers@5.15--5.15.140.x86_64_linux.bottle.tar.gz
==> Downloading https://ghcr.io/v2/homebrew/core/glibc/manifests/2.35_1
Already downloaded: /home/motz/.cache/Homebrew/downloads/0b9d36176fd9b681842d23337db0fd45753c857707574090ef783dc4adb0a44f--glibc-2.35_1.bottle_manifest.json
==> Fetching glibc
==> Downloading https://ghcr.io/v2/homebrew/core/glibc/blobs/sha256:274dd06ae6ecaee3025d6bf21cf4c7641df9a1cc3973e162911a1f4a76000a24
Already downloaded: /home/motz/.cache/Homebrew/downloads/39fc4a3caa0a20d1aaafc2c20372fd92aca30bd49d3e0f524a73918d22a79144--glibc--2.35_1.x86_64_linux.bottle.tar.gz
==> Downloading https://ghcr.io/v2/homebrew/core/gmp/manifests/6.3.0
Already downloaded: /home/motz/.cache/Homebrew/downloads/70a72a71216843d66a953c06ff6337445ce9bc94fae9f0e301e2f59005274a8e--gmp-6.3.0.bottle_manifest.json
==> Installing gmp dependency: glibc
==> Downloading https://ghcr.io/v2/homebrew/core/glibc/manifests/2.35_1
Already downloaded: /home/motz/.cache/Homebrew/downloads/0b9d36176fd9b681842d23337db0fd45753c857707574090ef783dc4adb0a44f--glibc-2.35_1.bottle_manifest.json
==> Installing dependencies for glibc: [email protected]
==> Installing glibc dependency: [email protected]
==> Downloading https://ghcr.io/v2/homebrew/core/linux-headers/5.15/manifests/5.15.140
Already downloaded: /home/motz/.cache/Homebrew/downloads/083e011e56b4363c7e6aedf0d0d3358658201ed65381d174d1e00d4d8894ea66--linux-headers@5.15-5.15.140.bottle_manifest.json
==> Pouring [email protected]_64_linux.bottle.tar.gz
Error: Permission denied @ dir_chdir - /root

[Motzumoto]

Going out of the root file gave me the following output:

motz@vmi1218828:~$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
==> Checking for `sudo` access (which may request your password)...
==> This script will install:
/home/linuxbrew/.linuxbrew/bin/brew
/home/linuxbrew/.linuxbrew/share/doc/homebrew
/home/linuxbrew/.linuxbrew/share/man/man1/brew.1
/home/linuxbrew/.linuxbrew/share/zsh/site-functions/_brew
/home/linuxbrew/.linuxbrew/etc/bash_completion.d/brew
/home/linuxbrew/.linuxbrew/Homebrew

Press RETURN/ENTER to continue or any other key to abort:
==> /usr/bin/sudo /bin/chown -R motz:motz /home/linuxbrew/.linuxbrew/Homebrew
==> Downloading and installing Homebrew...
HEAD is now at d68e3e563 Merge pull request #16268 from Bo98/ruby3-for-all
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/standalone/sorbet.rb:4:in `require': cannot load such file -- sorbet-runtime (LoadError)
        from /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/standalone/sorbet.rb:4:in `<top (required)>'
        from /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/startup.rb:10:in `require_relative'
        from /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/startup.rb:10:in `<top (required)>'
        from /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/global.rb:4:in `require_relative'
        from /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/global.rb:4:in `<top (required)>'
        from /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/brew.rb:18:in `require_relative'
        from /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/brew.rb:18:in `<main>'
Failed during: /home/linuxbrew/.linuxbrew/bin/brew update --force --quiet

[Motzumoto]

I tried doing brew tap first then brew install gcc but I get the same error.

[ThienVie]

You are currently in your root folder. If you are new with linux. I can give you a quick overview:

User: motz
Name of your computer: vm... (I don't know, if it is safe to write your computer name, but I am on the safe side.)
Your current folder: /root

You aren't allowed to write something in the root folder.
Write cd .. to get out of your root folder and then write cd home.
Write ls and then you probably see this:

motz    linuxbrew

Write cd motz and do whatever you want.
As long as you remember this:

Don't run this as root!

Be free to do whatever you want. :)

Ah, by the way, I recommend to look at this, if you are using Linux.