setup ubuntu for rails part 2

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configure git

  1. add user informations 
    $ git config --global user.name "Tim Chen"
$ git config --global user.email "inferno6562@gmail.com"
  2. add some useful configs 
    $ git config --global core.editor "vim"
$ git config --global alias.graph "log --graph --decorate --oneline"
$ git config --global push.default simple
  3. display branch name on shell (re-login is required) 
    $ vim ~/.bash_profile

    parse_git_branch() {
 git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/'
}
export PS1="\u@\h \[\033[32m\]\w\[\033[33m\]\$(parse_git_branch)\[\033[00m\] $ "

config vimrc

  1. edit vimrc 
    $ vim ~/.vimrc
  2. add configs 
    " custom settings
set nu
set tabstop=2
set shiftwidth=2
set mouse=a
set incsearch
filetype indent on
set bg=dark
color darkblue
hi LineNr cterm=bold ctermfg=DarkGrey ctermbg=NONE
hi CursorLineNr cterm=bold ctermfg=Green ctermbg=NONE
inoremap ( ()<Esc>i
inoremap " ""<Esc>i
inoremap ' ''<Esc>i
inoremap [ []<Esc>i
inoremap { {}<Esc>i

get ctrlp.vim

  1. clone ctrlp.vim 
    $ cd ~/.vim
$ git clone https://github.com/ctrlpvim/ctrlp.vim.git bundle/ctrlp.vim
  2. add to ~/.vimrc 
    set runtimepath^=~/.vim/bundle/ctrlp.vim
  3. run on vim's command line 
    :helptags ~/.vim/bundle/ctrlp.vim/doc
  4. restart vim and check :help ctrlp.txt

generate SSH keys for github/gitlab

  1. generate SSH keys 
    $ ssh-keygen
$ cat ~/.ssh/id_rsa.pub
  2. copy output and paste to github and gitlab

install rails 5 and 6

  1. install rails at current gemset 
    $ gem install rails
  2. create a new gemset 
    $ rvm gemset create rails600
  3. switch to rails600 
    $ rvm use @rails600
  4. list all rails version and install latest one(current latest version is 6.0.0.rc1) 
    $ gem list rails --remote --pre --all | grep -i "^rails "
$ gem install rails -v 6.0.0.rc1