I have the vagrant 'virtualbox' virtual machine, however I can no longer access vagrant with another pc to retrieve my information contained in the virtual machine.
'ubuntu/focus'
how can I proceed?
In your project directory (the one where you have the Vagrantfile) vagrant will create . .vagrant folder. The content of this folder has the Virtalbox vm information
for example:
ls -all .vagrant/machines/default/virtualbox/
total 72
drwxr-xr-x 11 fhenri staff 352 Aug 28 22:20 .
drwxr-xr-x 3 fhenri staff 96 Aug 27 22:38 ..
-rw-r--r-- 1 fhenri staff 40 Aug 28 22:20 action_provision
-rw-r--r-- 1 fhenri staff 10 Aug 28 22:18 action_set_name
-rw-r--r-- 1 fhenri staff 148 Sep 6 09:42 box_meta
-rw-r--r-- 1 fhenri staff 3 Aug 28 22:18 creator_uid
-rw-r--r-- 1 fhenri staff 36 Aug 28 22:18 id
-rw-r--r-- 1 fhenri staff 32 Aug 28 22:18 index_uuid
-rw------- 1 fhenri staff 1679 Aug 28 22:18 private_key
-rw-r--r-- 1 fhenri staff 316 Sep 6 10:18 synced_folders
-rw-r--r-- 1 fhenri staff 63 Aug 28 22:18 vagrant_cwd
the name of the vagrant machine is default and provider is virtual box in this case.
If you copy the virtual box VM into another PC, you also need to copy this folder or need to recreate it. It contains the id of virtual box VM which helps vagrant to map and link with the VM.
I have gone through a lot of google results. Let me explain what I have tried first. I am currently working on a corporate laptop. Mac OS Mojave 10.14.6.
Error that I get:
sudo: /etc/sudoers is world writable
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin
ls -le /etc
-rwxrwxrwx 1 root wheel 179 Aug 18 2018 shells
drwxrwxrwx 4 root wheel 128 Aug 18 2018 snmp
drwxrwxrwx 5 root wheel 160 Nov 11 2019 ssh
drwxrwxrwx 6 root wheel 192 Nov 11 2019 ssl
-rwxrwxrwx 1 root wheel 257 Aug 18 2018 sudo_lecture
-rwxrwxrwx 1 root wheel 1630 Mar 11 11:51 sudoers
drwxrwxrwx 2 root wheel 64 Aug 18 2018 sudoers.d
drwxrwxrwx 4 root admin 128 Dec 25 2018 symantec
-rw-rw-rw-# 1 01244861 wheel 47 Feb 2 18:13 sysctl.conf
-rwxrwxrwx 1 root wheel 96 Aug 21 2018 syslog.conf
-rwxrwxrwx 1 root wheel 1316 Aug 18 2018 ttys
drwxrwxrwx 6 root wheel 192 Aug 18 2018 wfs
-rwxrwxrwx 1 root wheel 0 Aug 18 2018 xtab
-rwxrwxrwx 1 root wheel 126 Aug 18 2018 zprofile
-rwxrwxrwx 1 root wheel 207 Aug 18 2018 zshrc
I have changed permission using chmod 440 /etc/sudoers and chmod 777 /etc/sudoers and also using info and manually updating from the file properties.
I am using iTerm2 as my terminal.
echo $PATH
/Users/01244861/.yarn/bin:/Users/01244861/.nvm/versions/node/v10.13.0/bin:/usr/local/opt/node#10/bin:/usr/local/opt/node#10/bin:/usr/local/opt/node#10/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/sbin:/usr/local/go/bin
echo $SHELL
/bin/zsh
My user permissions:
Is there anything else that I can do to fix this?
Thanks
I installed ubuntu 16 under AWS and try to install laravel 5.8 app, but
opening server with
ssh -i /home/user/pemkeys.pem
command
I got Permission denied error while running composer
ubuntu#ip-172-31-34-88:/var/www/html/lprods$ clear
ubuntu#ip-172-31-34-88:/var/www/html/lprods$ sudo chmod -R 775 /var/www/html/lprods/
ubuntu#ip-172-31-34-88:/var/www/html/lprods$ composer install
Cannot create cache directory /home/ubuntu/.composer/cache/repo/https---packagist.org/, or directory is not writable. Proceeding without cache
Cannot create cache directory /home/ubuntu/.composer/cache/files/, or directory is not writable. Proceeding without cache
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Nothing to install or update
[ErrorException]
file_put_contents(/var/www/html/lprods/vendor/composer/installed.json): failed to open stream: Permission denied
install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-plugins] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--ignore-platform-reqs] [--] [<packages>]...
ubuntu#ip-172-31-34-88:/var/www/html/lprods$ whoami
ubuntu
ubuntu#ip-172-31-34-88:/var/www/html/lprods$ lsb_release -d; uname -r; uname -i
Description: Ubuntu 16.04.6 LTS
4.4.0-1084-aws
x86_64
As far as I remember that is not good idea to run
composer install
under root.
Which steps have I to to take to install my app properly ?
UPDATED :
1) My project dir :
$ cd /var/www/html/lprods
$ ls -ld
drwxrwxrwx 16 root root 4096 Jun 17 12:34 .
(what these output means ?)
$ ls -la
total 600
drwxrwxrwx 16 root root 4096 Jun 17 12:34 .
drwxr-xr-x 4 root root 4096 Jun 17 11:42 ..
-rwxrwxrwx 1 root root 625 Jun 17 12:03 .env
-rwxrwxrwx 1 root root 521 Jun 17 11:42 .env.example
drwxrwxrwx 8 root root 4096 Jun 17 11:42 .git
-rwxrwxrwx 1 root root 111 Jun 17 11:42 .gitattributes
-rwxrwxrwx 1 root root 135 Jun 17 11:42 .gitignore
-rwxrwxrwx 1 root root 122 Jun 17 11:42 .htaccess
drwxrwxrwx 3 root root 4096 Jun 17 11:42 Modules
-rwxrwxrwx 1 root root 1110 Jun 17 11:42 Release.key
drwxrwxrwx 2 root root 4096 Jun 17 11:42 __SQL
drwxrwxrwx 10 root root 4096 Jun 17 11:42 app
-rwxrwxrwx 1 root root 1646 Jun 17 11:42 artisan
drwxrwxrwx 3 root root 4096 Jun 17 11:42 bootstrap
-rwxrwxrwx 1 root root 430 Jun 17 11:42 code.html
-rwxrwxrwx 1 root root 186 Jun 17 11:42 code.php
-rwxrwxrwx 1 root root 5746 Jun 17 11:42 code.txt
-rwxrwxrwx 1 root root 8244 Jun 17 11:42 commands.txt
-rwxrwxrwx 1 root root 1953 Jun 17 11:42 composer.json
-rwxrwxrwx 1 root root 187263 Jun 17 11:42 composer.lock
drwxrwxrwx 2 root root 4096 Jun 17 11:42 config
drwxrwxrwx 5 root root 4096 Jun 17 11:42 database
-rwxrwxrwx 1 root root 2860 Jun 17 11:42 env.txt
-rwxrwxrwx 1 root root 4236 Jun 17 11:42 good.html
-rwxrwxrwx 1 root root 83 Jun 17 11:42 lprods.sublime-project
-rwxrwxrwx 1 root root 8460 Jun 17 11:42 lprods.sublime-workspace
-rwxrwxrwx 1 root root 388 Jun 17 11:42 md.txt
drwxrwxrwx 834 root root 36864 Jun 17 11:42 node_modules
-rwxrwxrwx 1 root root 1114 Jun 17 11:42 package.json
-rwxrwxrwx 1 root root 1055 Jun 17 11:42 phpunit.xml
drwxrwxrwx 11 root root 4096 Jun 17 11:42 public
-rwxrwxrwx 1 root root 1465 Jun 17 11:42 q.twig
drwxrwxrwx 5 root root 4096 Jun 17 11:42 resources
drwxrwxrwx 2 root root 4096 Jun 17 11:42 routes
-rwxrwxrwx 1 root root 563 Jun 17 11:42 server.php
drwxrwxrwx 6 root root 4096 Jun 17 11:42 storage
drwxrwxrwx 4 root root 4096 Jun 17 11:42 tests
drwxrwxrwx 46 root root 4096 Jun 17 11:58 vendor
-rwxrwxrwx 1 root root 1549 Jun 17 11:42 webpack.mix.js
-rwxrwxrwx 1 root root 204808 Jun 17 11:42 yarn.lock
2) I removed dirs :
rm -R vendor
rm -R /home/ubuntu/.composer
and after that running in my app
composer install
my project was successfully installed.
Could you please give some explanations, why so ?
Thanks!
you can use sudo composer update if permission denied arises. or you should add composer globally like composer global require laravel/installer and can easily access composer from any where also try changing the permission of the project like sudo chown -R user:user project
I've been having some issues lately with my virtualbox. I tried reinstalling it but it won't help.
I don't get why my VB suddenly stopped working and won't start.
I tried looking if it has anything to do with permissions but I am not an expert in reading the following: Is it problem with permission ?
drwxr-xr-x# 30 root wheel 960 Oct 15 09:19 /
drwxr-xr-x+ 60 milicamiletic admin 1920 Oct 15 10:01 /Applications
0: group:everyone deny delete
drwxr-xr-x 3 root admin 96 Oct 15 10:01 /Applications/VirtualBox.app
-rw-r--r-- 1 root admin 5529952 Aug 14 14:04 /Applications/VirtualBox.app/Contents/MacOS/VBoxRT.dylib
drwxr-xr-x 6 root wheel 192 Nov 13 2017 /private
drwxr-xr-x 118 root wheel 3776 Oct 15 09:36 /private/etc
-r--r----- 1 root wheel 1563 Dec 11 2016 /private/etc/sudoers
drwxrwxrwt 8 root wheel 256 Oct 15 10:01 /private/tmp
Usually applications are installed not as root but as the user. you seem to have installed VirtualBox as root.
Moreover, it seems you are missing the main executable file.
Try reinstalling virtualbox as yourself
I get this error:
xcrun: error: invalid active developer path (/Applications/Xcode.app), missing xcrun at: /Applications/Xcode.app/usr/bin/xcrun
This solution works, but the error occurs again after closing my terminal and reopening it; I then have to run the same commands every time I open a new terminal window.
How can I apply these changes such that they will save after closing the terminal window out?
I started getting the same error after updating to OS X El Capitan.
In my case, all I did was to install it:
sudo xcode-select --install
And it works fine for me.
The steps below are for OS X 10.10 (Yosemite). Those experiencing this because of an upgrade to 10.11 (El Capitan) seem need to only run sudo xcode-select --install as described in the accepted answer.
I found a suggestion here which indicated
sudo xcode-select -switch /
as the fix. However, this threw an error that the developer path was invalid.
Instead, for me, I modified this to
sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer/
(which is a mixture of the two referenced link solutions) and this worked.
Try using
xcode-select --print-path
to find your developer path if /Applications/Xcode.app/Contents/Developer/ is still invalid for you.
I know this is quite old but I got the same issue and then I fixed it by doing couple more extra steps. Problem came when Terminal could not find the actual path of the Command Line Tools.
If you had Xcode and then removed it, then Terminal is referring to
the Command Line Tools inside the Xcode folder. Try using this
command and check what your path is, xcode-select --print-path. This would most likely print /Applications/Xcode.app/Contents/Developer.
Now to fix this, reinstall the command line tools for xcode. Initially remove any previous installations using sudo rm -rf /Library/Developer/CommandLineTools.
Then install the command line tools sudo xcode-select --install
Now the final step, change the path for the CLT to the actual path using sudo xcode-select -switch /Library/Developer/CommandLineTools/ this will fix it.
I resolved the issue with the below steps.
Xcode -> Preferences -> Locations -> Command Line Tools -> Select the command tool matching your Xcode version.
I started getting the same error after i update macOS Mojave to macOS Catalina.
I just installed few command lines in Terminal,
$ sudo gem install cocoapods
$ sudo xcode-select --install
$ chsh -s /bin/zsh
Then, goto Xcode -> Preferences -> Locations -> Command Line Tools and confirm you have current Xcode version selected there.
For me the solution was as easy as reinstalling Xcode.
It was pointed out here: https://superuser.com/a/981126
You can (re)install Xcode via command line like the answer above suggest, or directly from the App Store.
I too had the same issue after upgrading to OS X EI Captian. I just installed xcode-select using sudo xcode-select --install
sudo xcode-select -switch / works for me.
Partial diagnosis: https://github.com/microsoft/vcpkg/issues/8781#issuecomment-547248760
It seems that upgrading from one MacOS version to another either uninstalls some dev tools or it moves them to another path, and this breaks compatibility with any tool using the environment variable that points to the old location where the tools were located.
sudo xcode-select --install
Using the install command worked for me, but it is not clear whether this simply downloaded and unpacked files and then skipped installation and simply updated an environment variable or whether it physically installed the files at the expected path. (Or it could have made links to the new folder path).
Testing my theory, I probe the folder structure with ls (I should have done this before using the install command):
rej#Ryans-MacBook-Air:~$ ls /Library/Developer/CommandLineTools/usr/bin/
rej#Ryans-MacBook-Air:~$ ls -la /Library/Developer/CommandLineTools/usr/bin/
total 243776
drwxr-xr-x 124 root wheel 3.9K Oct 28 23:03 ./
drwxr-xr-x 7 root admin 224B Oct 28 23:05 ../
lrwxr-xr-x 1 root wheel 64B Oct 28 23:03 2to3# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/2to3
lrwxr-xr-x 1 root wheel 68B Oct 28 23:03 2to3-3.7# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/2to3-3.7
-rwxr-xr-x 1 root wheel 116K Sep 5 22:51 DeRez*
-rwxr-xr-x 1 root wheel 31K Sep 5 22:51 GetFileInfo*
-rwxr-xr-x 1 root wheel 33K Sep 5 22:51 ResMerger*
-rwxr-xr-x 1 root wheel 126K Sep 5 22:51 Rez*
-rwxr-xr-x 1 root wheel 31K Sep 5 22:51 SetFile*
-rwxr-xr-x 1 root wheel 32K Sep 5 22:51 SplitForks*
-rwxr-xr-x 1 root wheel 41K Sep 5 22:51 ar*
-rwxr-xr-x 1 root wheel 40K Sep 5 22:51 as*
-rwxr-xr-x 1 root wheel 27K Sep 5 22:51 asa*
-rwxr-xr-x 1 root wheel 216K Sep 5 22:51 bison*
-rwxr-xr-x 1 root wheel 159K Sep 5 22:51 bitcode_strip*
lrwxr-xr-x 1 root wheel 5B Oct 28 23:03 c++# -> clang
-rwxr-xr-x 1 root admin 31K Sep 5 22:51 c89*
-rwxr-xr-x 1 root admin 31K Sep 5 22:51 c99*
lrwxr-xr-x 1 root wheel 5B Oct 28 23:03 cc# -> clang
-rwxr-xr-x 1 root wheel 80M Sep 5 22:51 clang*
lrwxr-xr-x 1 root wheel 5B Oct 28 23:03 clang++# -> clang
-rwxr-xr-x 1 root wheel 125K Sep 5 22:51 cmpdylib*
-rwxr-xr-x 1 root wheel 154K Sep 5 22:51 codesign_allocate*
lrwxr-xr-x 1 root wheel 17B Oct 28 23:03 codesign_allocate-p# -> codesign_allocate
-rwxr-xr-x 1 root admin 3.3K Aug 16 06:55 cpp*
-rwxr-xr-x 1 root wheel 36K Sep 5 22:51 ctags*
-rwxr-xr-x 1 root wheel 150K Sep 5 22:51 ctf_insert*
-rwxr-xr-x 1 root wheel 30M Sep 5 22:51 dsymutil*
lrwxr-xr-x 1 root wheel 14B Oct 28 23:03 dwarfdump# -> llvm-dwarfdump
-rwxr-xr-x 1 root wheel 477K Sep 5 22:51 dwarfdump-classic*
-rwxr-xr-x 1 root wheel 211K Sep 5 22:51 dyldinfo*
-rwxr-xr-x 1 root wheel 239B Sep 5 19:18 easy_install-3.7*
-rwxr-xr-x 1 root wheel 572K Sep 5 22:51 flex*
-rwxr-xr-x 1 root wheel 572K Sep 5 22:51 flex++*
lrwxr-xr-x 1 root wheel 3B Oct 28 23:03 g++# -> gcc
-rwxr-xr-x 1 root wheel 101K Aug 16 07:31 gatherheaderdoc*
-rwxr-xr-x 1 root admin 27K Sep 5 22:51 gcc*
lrwxr-xr-x 1 root wheel 8B Oct 28 23:03 gcov# -> llvm-cov
-rwxr-xr-x 1 root wheel 2.4M Sep 5 22:51 git*
lrwxr-xr-x 1 root wheel 3B Oct 28 23:03 git-receive-pack# -> git
-rwxr-xr-x 1 root wheel 1.4M Sep 5 22:51 git-shell*
lrwxr-xr-x 1 root wheel 3B Oct 28 23:03 git-upload-archive# -> git
lrwxr-xr-x 1 root wheel 3B Oct 28 23:03 git-upload-pack# -> git
-rwxr-xr-x 1 root wheel 148K Sep 5 22:51 gm4*
-rwxr-xr-x 1 root wheel 166K Sep 5 22:51 gnumake*
-rwxr-xr-x 1 root wheel 98K Sep 5 22:51 gperf*
-rwxr-xr-x 1 root wheel 33K Sep 5 22:51 hdxml2manxml*
-rwxr-xr-x 1 root wheel 158K Aug 16 07:31 headerdoc2html*
-rwxr-xr-x 1 root wheel 73K Sep 5 22:51 indent*
-rwxr-xr-x 1 root wheel 142K Sep 5 22:51 install_name_tool*
-rwxr-xr-x 1 root wheel 2.5M Sep 5 22:51 ld*
-rwxr-xr-x 1 root wheel 230B Aug 16 07:13 lex*
-rwxr-xr-x 1 root wheel 163K Sep 5 22:51 libtool*
-rwxr-xr-x 1 root wheel 73K Sep 5 22:51 lipo*
-rwxr-xr-x 1 root wheel 332K Sep 5 22:51 lldb*
-rwxr-xr-x 1 root wheel 3.6M Sep 5 22:51 llvm-cov*
-rwxr-xr-x 1 root wheel 7.9M Sep 5 22:51 llvm-dwarfdump*
-rwxr-xr-x 1 root wheel 9.8M Sep 5 22:51 llvm-nm*
-rwxr-xr-x 1 root wheel 11M Sep 5 22:51 llvm-objdump*
-rwxr-xr-x 1 root wheel 40K Sep 5 22:51 llvm-otool*
-rwxr-xr-x 1 root wheel 1.6M Sep 5 22:51 llvm-profdata*
-rwxr-xr-x 1 root wheel 2.9M Sep 5 22:51 llvm-size*
-rwxr-xr-x 1 root wheel 3.5K Aug 16 07:19 lorder*
-rwxr-xr-x 1 root wheel 148K Sep 5 22:51 m4*
-rwxr-xr-x 1 root wheel 166K Sep 5 22:51 make*
-rwxr-xr-x 1 root wheel 7.7K Aug 16 07:16 mig*
lrwxr-xr-x 1 root wheel 7B Oct 28 23:03 nm# -> llvm-nm
-rwxr-xr-x 1 root wheel 142K Sep 5 22:51 nm-classic*
-rwxr-xr-x 1 root wheel 171K Sep 5 22:51 nmedit*
lrwxr-xr-x 1 root wheel 12B Oct 28 23:03 objdump# -> llvm-objdump
lrwxr-xr-x 1 root wheel 10B Oct 28 23:03 otool# -> llvm-otool
-rwxr-xr-x 1 root wheel 644K Sep 5 22:51 otool-classic*
-rwxr-xr-x 1 root wheel 138K Sep 5 22:51 pagestuff*
-rwxr-xr-x 1 root wheel 221B Sep 5 19:18 pip3*
-rwxr-xr-x 1 root wheel 221B Sep 5 19:18 pip3.7*
-rwxr-xr-x 1 root wheel 32K Sep 5 22:51 projectInfo*
lrwxr-xr-x 1 root wheel 66B Oct 28 23:03 pydoc3# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/pydoc3
lrwxr-xr-x 1 root wheel 68B Oct 28 23:03 pydoc3.7# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/pydoc3.7
lrwxr-xr-x 1 root wheel 67B Oct 28 23:03 python3# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/python3
lrwxr-xr-x 1 root wheel 74B Oct 28 23:03 python3-config# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/python3-config
lrwxr-xr-x 1 root wheel 69B Oct 28 23:03 python3.7# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/python3.7
lrwxr-xr-x 1 root wheel 76B Oct 28 23:03 python3.7-config# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/python3.7-config
lrwxr-xr-x 1 root wheel 70B Oct 28 23:03 python3.7m# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/python3.7m
lrwxr-xr-x 1 root wheel 77B Oct 28 23:03 python3.7m-config# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/python3.7m-config
lrwxr-xr-x 1 root wheel 66B Oct 28 23:03 pyvenv# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/pyvenv
lrwxr-xr-x 1 root wheel 70B Oct 28 23:03 pyvenv-3.7# -> ../../Library/Frameworks/Python3.framework/Versions/3.7/bin/pyvenv-3.7
lrwxr-xr-x 1 root wheel 7B Oct 28 23:03 ranlib# -> libtool
-rwxr-xr-x 1 root wheel 70K Sep 5 22:51 resolveLinks*
-rwxr-xr-x 1 root wheel 85K Sep 5 22:51 rpcgen*
-rwxr-xr-x 1 root wheel 56K Sep 5 22:51 segedit*
lrwxr-xr-x 1 root wheel 12B Oct 28 23:03 size# -> size-classic
-rwxr-xr-x 1 root wheel 125K Sep 5 22:51 size-classic*
-rwxr-xr-x 1 root admin 138K Sep 5 22:51 stapler*
-rwxr-xr-x 1 root wheel 126K Sep 5 22:51 strings*
-rwxr-xr-x 1 root wheel 179K Sep 5 22:51 strip*
-rwxr-xr-x 1 root wheel 330K Sep 5 22:51 svn*
-rwxr-xr-x 1 root wheel 118K Sep 5 22:51 svnadmin*
-rwxr-xr-x 1 root wheel 105K Sep 5 22:51 svnbench*
-rwxr-xr-x 1 root wheel 64K Sep 5 22:51 svndumpfilter*
-rwxr-xr-x 1 root wheel 71K Sep 5 22:51 svnfsfs*
-rwxr-xr-x 1 root wheel 98K Sep 5 22:51 svnlook*
-rwxr-xr-x 1 root wheel 70K Sep 5 22:51 svnmucc*
-rwxr-xr-x 1 root wheel 89K Sep 5 22:51 svnrdump*
-rwxr-xr-x 1 root wheel 122K Sep 5 22:51 svnserve*
-rwxr-xr-x 1 root wheel 90K Sep 5 22:51 svnsync*
-rwxr-xr-x 1 root wheel 44K Sep 5 22:51 svnversion*
-rwxr-xr-x 1 root wheel 90M Sep 5 22:51 swift*
lrwxr-xr-x 1 root wheel 5B Oct 28 23:03 swift-autolink-extract# -> swift
-rwxr-xr-x 1 root admin 6.1M Sep 5 22:51 swift-build*
-rwxr-xr-x 1 root admin 734K Sep 5 22:51 swift-build-tool*
-rwxr-xr-x 1 root wheel 687K Sep 5 22:51 swift-demangle*
lrwxr-xr-x 1 root wheel 5B Oct 28 23:03 swift-format# -> swift
-rwxr-xr-x 1 root admin 6.1M Sep 5 22:51 swift-package*
-rwxr-xr-x 1 root admin 6.1M Sep 5 22:51 swift-run*
-rwxr-xr-x 1 root wheel 61K Sep 5 22:51 swift-stdlib-tool*
-rwxr-xr-x 1 root admin 6.1M Sep 5 22:51 swift-test*
lrwxr-xr-x 1 root wheel 5B Oct 28 23:03 swiftc# -> swift
-rwxr-xr-x 1 root wheel 12M Sep 5 22:51 tapi*
-rwxr-xr-x 1 root wheel 41K Sep 5 22:51 unifdef*
-rwxr-xr-x 1 root wheel 2.9K Aug 16 07:19 unifdefall*
-rwxr-xr-x 1 root wheel 63K Sep 5 22:51 unwinddump*
-rwxr-xr-x 1 root wheel 49K Sep 5 22:51 vtool*
-rwxr-xr-x 1 root wheel 45K Sep 5 22:51 xml2man*
-rwxr-xr-x 1 root wheel 135B Aug 16 07:22 yacc*
It is apparent that the files are physically located at that folder location and the installer installed missing components. The fact that MacOS's upgrade process uninstalls my development environment is unfriendly and Apple should be reprimanded.
I had faced the same issue when i removed one of the two Xcode installed.
I have solve this issue by Switching the path using terminal like below
$ sudo xcode-select --switch (drag Xcode here to get a path)
e.g sudo xcode-select --switch /Applications/Xcode\ 10.1.app
I got a similar error running Homebrew for the first time after upgrading from macOS Mojave v10.14 to Catalina v10.15.
It's never a good idea to run commands without understanding what's wrong with your installation of Homebrew and what the commands actually do. Your first and best option is to run brew doctor. This command will not only tell you if something is wrong but also how to fix the problem. In my case it showed:
Warning: Your Xcode is configured with an invalid path.
You should change it to the correct path:
sudo xcode-select -switch /Applications/Xcode.app
Once you fix the problem(s), run brew doctor again. Basically, repeat the process until you get the all clear message.
In some cases, you get something like:
Unbrewed dylibs/header files/static libraries were found in /usr/local/....
This will happen if you've installed software outside Homebrew that also use the same location to store their files. In many cases, it's safe to ignore these warnings.