TRK RAILS
Install Ruby Using Brew Rbenv
Sudo commands
First steps on new Ubuntu machine. This commands are for amins with sudo priviledges
# git is used to code collaboration
sudo apt install -y git curl
# necessary if you want to commit to any project
git config --global user.email "[email protected]"
git config --global user.name "Your Name"
# nice editor
sudo apt install vim
# if you want to change default editor from nano to something else
sudo update-alternatives --config editor
# enable ssh to localhost
sudo apt install openssh-server
# generate ~/ssh/id_rsa and ~/ssh/id_rsa.pub to add to
ssh-keygen
# network tool to find all open ports and ip addresses, eg nmap -F 192.168.1.-
sudo apt install nmap
# for building ruby
sudo apt install -y build-essential libz-dev
Install Brew
Use brew so all users can use the same libs from /home/linuxbrew/
https://brew.sh/
Note that we will install only for one user and other will ssh to it
# on macos go to System Settings > Users & Groups > Add user bbrew with admin rights
# use strong password and Allow bbrew to administer this computer
# on ubuntu follow those commands
sudo groupadd brew
sudo useradd -m -g brew -s /bin/bash brew
sudo passwd brew
sudo mkdir -p /home/linuxbrew/.linuxbrew/
sudo chown -R brew:brew /home/linuxbrew/.linuxbrew/
Install as brew only for brew user since not we do not need sudo
ssh brew@localhost
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
# Add brew to shell
cat >> ~/.bashrc << 'HERE_DOC'
eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
HERE_DOC
That is.
For other users you need to load brew but also change brew command
All users should be able to ssh brew@localhost so you need to copy keys
ssh-copy-id brew@localhost
and add this function to .bashrc or .zprofile
# .bashrc or .zprofile
eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
function brew() {
if [ -d /home/linuxbrew/.linuxbrew/bin ]; then
ssh brew@localhost 'bash --login -c "export PATH=/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin:$PATH && brew '"$@"'"'
elif [ -d /opt/homebrew/bin ]; then
ssh brew@localhost 'bash --login -c "export PATH=/opt/homebrew/bin:$PATH && brew '"$@"'"'
else
echo 'Can not find /home/linuxbrew/ or /opt/homebrew. Please install brew as brew user'
fi
}
usage is like
bbrew
Example usage:
brew search TEXT|/REGEX/
Here are the reasons why we can not share the brew
If you use multiseat than you need to add new group and attach each user to it https://apple.stackexchange.com/a/45003/449651 Error is
brew update && brew upgrade ruby-build
Error: /home/linuxbrew/.linuxbrew/Homebrew is not writable. You should change the
ownership and permissions of /home/linuxbrew/.linuxbrew/Homebrew back to your
user account:
sudo chown -R $(whoami) /home/linuxbrew/.linuxbrew/Homebrew
Set umask if not already allow group flags (value 0002)
# ~/.bashrc
umask 0002
Add group and set sticky bit
sudo groupadd brew
compgen -u # list all users
sudo usermod -aG brew dule
sudo usermod -aG brew mile
sudo usermod -aG brew newuser
sudo chgrp -R brew /home/linuxbrew/.linuxbrew/
sudo chmod -R g+w /home/linuxbrew/.linuxbrew/
# Set the sticky bit to ensure new files and directories inherit the group
# ownership: https://en.wikipedia.org/wiki/Setuid#When_set_on_a_directory
find /home/linuxbrew/.linuxbrew -type d -exec sudo chmod g+s {} +
# check that group has rw-
ls -la /home/linuxbrew/.linuxbrew/Homebrew/README.md
-rw-rw-r-- 1 dule brew 8495 феб 9 08:40 /home/linuxbrew/.linuxbrew/Homebrew/README.md
# check setgid, it should start with 2
stat -c "%a %A" $(brew --prefix)
2775 drwxrwsr-x
# also https://zenn.dev/megeton/articles/f9f17d184fead6
git config --global --add safe.directory $(brew --prefix)
# otherwise you can not update
==> Updating Homebrew...
Warning: No remote 'origin' in /home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/homebrew/homebrew-bundle, skipping update!
Error: Your Homebrew is too outdated for `brew bundle`. Please run `brew update`!
On macos
sudo dseditgroup -o create homebrew
sudo dseditgroup -o edit -a dule -t user homebrew
sudo dseditgroup -o edit -a mile -t user homebrew
sudo chown -R :homebrew /opt/homebrew
sudo chmod -R g+w /opt/homebrew
Log out and login so the group has an effect and try to run brew upgrade as
different users.
brew update && brew upgrade ruby-build
Error: Failure while executing; `/usr/bin/env cp -pR /tmp/homebrew-unpack20240628-559339-n6br4d/expat/. /home/linuxbrew/.linuxbrew/Cellar/expat` exited with 1. Here's the output:
cp: preserving times for '/home/linuxbrew/.linuxbrew/Cellar/expat/.': Operation not permitted
so I tried to override cp with –no-preserve=timestamps but than it does not detect that it has to upgrade
Other sudo
Also for postgresql you need to add new user ability to create databases
sudo -u postgres psql -d postgres -c "CREATE USER newuser WITH SUPERUSER;"
Regular user comands
Initialize ssh to brew user
All users should be able to ssh brew@localhost so you need to copy keys
ssh-copy-id brew@localhost
and add this function to .bashrc or .zprofile
# .bashrc or .zprofile
function bbrew() {
if [ -d /home/linuxbrew/.linuxbrew/bin ]; then
ssh brew@localhost 'bash --login -c "export PATH=/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin:$PATH && brew '"$@"'"'
elif [ -d /opt/homebrew/bin ]; then
ssh brew@localhost 'bash --login -c "export PATH=/opt/homebrew/bin:$PATH && brew '"$@"'"'
else
echo 'Can not find /home/linuxbrew/ or /opt/homebrew. Please install brew as brew user'
fi
}
usage is like
bbrew
Example usage:
brew search TEXT|/REGEX/
Additional tips:
If you need to read from Brewfile, than youo need to copy to brew
scp Brewfile brew@localhost
bbrew bundle --no-upgrade --no-lock
Add to your .bashrc and reopen terminal. Typing reset won’t work
cat >> ~/.bashrc << 'HERE_DOC'
eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
HERE_DOC
cat ~/.bashrc
# you should see above line: eval ....
Now you can use brew every time you open terminal
Install rbenv
brew install rbenv
Add this to your ~/.bashrc so you can access rbenv commands
echo export PATH="$HOME/.rbenv/bin:$PATH" >> ~/.bashrc
echo eval "$(rbenv init -)" >> ~/.bashrc
Installing Ruby using rbenv
To change ruby version you can use .ruby-version file in current or any parent
folder. For example you can set default version with .ruby-version in your
home folder ~/
echo 3.2.0 > ~/.ruby-version
You can also change ruby version with this command or env variable
rbenv shell 3.2.0
# this is the same as export RBENV_VERSION=3.2.0
# to undo you can use
rbenv shell --unset
# check all installed versions
rbenv versions
Ruby 3.2.0
For compiling Ruby 3.2.0 you should use openssl@3 Check rbenv/ruby-build wiki for additional info
brew install openssl@3
export RUBY_CONFIGURE_OPTS="--with-openssl-dir=`brew --prefix openssl@3`"
rbenv install 3.2.0
Export these variables, don’t save them in your .bashrc it won’t work for
every Ruby version so to be on the safe side just export them every time you
want to install new Ruby version
When you install gems that need to be compiled locally than you might need to export PATH, LDFLAGS, CPPFLAGS or PKG_CONFIG_PATH
export PATH="/home/linuxbrew/.linuxbrew/opt/openssl@3/bin:$PATH"
export LDFLAGS="-L`brew --prefix openssl@3`/lib"
export CPPFLAGS="-I`brew --prefix openssl@3`/include"
export PKG_CONFIG_PATH="`brew --prefix openssl@3`/lib/pkgconfig"
Note: Do not restart terminal if you are exporting variables, it won’t persist in the next session
For example Installing Ruby version that uses [email protected]
To install version of ruby that uses [email protected] we need to use RUBY_CONFIGURE_OPTS
export RUBY_CONFIGURE_OPTS="--with-openssl-dir=`brew --prefix [email protected]`"
ruby install 2.6.7
export LDFLAGS="-L`brew --prefix [email protected]`/lib"
export CPPFLAGS="-I`brew --prefix [email protected]`/include"
export PKG_CONFIG_PATH="`brew --prefix [email protected]`/lib/pkgconfig"
bundle
Errors
For ruby 2.6.7 on mac for error
vm.c:2295:9: error: call to undeclared function 'rb_native_mutex_destroy'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
rb_native_mutex_destroy(&vm->waitpid_lock);
^
you might need
CFLAGS="-Wno-error=implicit-function-declaration" rbenv install 2.6.7
For ruby 2.6.6 on mac you might see error
error closure.c:264:14: error: call to undeclared function 'ffi_prep_closure'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
so you need to configure libffi
RUBY_CFLAGS=-DUSE_FFI_CLOSURE_ALLOC rbenv install 2.6.6
For ruby 2.7.6 on ubuntu and error
crypto/comp/c_zlib.c:35:11: fatal error: zlib.h: No such file or directory
solution is to install zlib
sudo apt-get install zlib1g-dev
For Ruby 3.2.1 on ubuntu you might need to use define readline location
export RUBY_CONFIGURE_OPTS="--with-openssl-dir=`brew --prefix openssl` --with-readline-dir=`brew --prefix readline`"
On macOS you, ruby 3.2.1 can be installed rbenv install 3.2.1 but make sure
you are not using Rosseta (Finder > Menu Go > Utilities > Terminal > right click
Get Info > uncheck Open using Rosetta) so the output is arm
uname -m
arm64
For Ruby 3.0.1 on M1 I got this error
error: use of undeclared identifier 'RSA_SSLV23_PADDING'
solution is to use old ssl so either uninstall new ssl https://github.com/postmodern/ruby-install/issues/409#issuecomment-1560601024
brew uninstall --ignore-dependencies openssl
brew install [email protected]
or export variables
export RUBY_CONFIGURE_OPTS="--with-openssl-dir=$(brew --prefix [email protected])"
export RUBY_CONFIGURE_OPTS="--with-openssl-dir=$(brew --prefix [email protected])"
export PATH="/opt/homebrew/opt/[email protected]/bin:$PATH"
export LDFLAGS="-L/opt/homebrew/opt/[email protected]/lib"
export CPPFLAGS="-I/opt/homebrew/opt/[email protected]/include"
export PKG_CONFIG_PATH="/opt/homebrew/opt/[email protected]/lib/pkgconfig"
rbenv install
When you install new gems, sometimes you need to rehash to create new shims https://github.com/rbenv/rbenv#rbenv-rehash
gem install jekyll
Command 'jekyll' not found, but can be installed with:
rbenv rehash
jekyll # now it works
If you notice an error when you are using rails s command
LoadError: libssl.so.1.1: cannot open shared object file: No such file or directory - /home/dule/.rbenv/versions/3.2.0/lib/ruby/gems/3.2.0/gems/puma-5.6.5/lib/puma/puma_http11.so
you should remove puma gem and install with correct LD and CPP flags pointing to openssl 3.
gem uninstall puma
export LDFLAGS="-L$(brew --prefix openssl@3)/lib"
export CPPFLAGS="-I$(brew --prefix openssl@3)/include"
bundle
# or you can install specific version using arguments to `gem install`
gem install puma -v 5.6.5 -- --with-cppflags=-I`brew --prefix openssl@3`/include --with-ldflags=-L`brew --prefix openssl@3`/lib
Alternative solution is to disable SSL when installing puma
gem uninstall puma
DISABLE_SSL=1 bundle
node yarn
–Install nvm https://github.com/nvm-sh/nvm–
we will use https://github.com/nodenv/nodenv
brew install nodenv
cat >> ~/.bashrc << 'HERE_DOC'
eval "$(nodenv init - bash)"
HERE_DOC
Wall
Enable tty group so user can send messages https://unix.stackexchange.com/a/313558/150895
Python
You can install python using pyenv https://github.com/pyenv/pyenv similar to rbenv
brew install pyenv
pyenv install 2.7.18
# pyenv global 2.7.18
pyenv shell 2.7.18
pyenv versions
# Add to .bashrc
# PATH=$(pyenv root)/shims:$PATH
# eval "$(pyenv init -)"