NYC Lunch and Learn - September 7, 2012 - Neville Li & David Xia

lunch_and_learn-2012-9-7.md

NYC Lunch and Learn

September 7, 2012

Neville Li & David Xia

Use Command Line Shortcuts

Basic

• clear the screen Ctrl-L
• signal end of file (close terminal tab or exit ssh) Ctrl-D
• abort current command Ctrl-C

Navigation - I cry everytime I see you use arrow keys

• jump to beginning of line Ctrl-A
• jump to end of line Ctrl-E

Typing - stop holding down delete and waiting foreever

• clear the line Ctrl-U
• clear the line ahead of the cursor Ctrl-K
• delete backwards one word Ctrl-W

Search Command History - you don't need to remember the exact command

• search backwards Ctrl-R

• search forwards Ctrl-S

• more

Customize Your Prompt

• PS1="[\d \t \u@\h:\w ] $ " displays date/time, hostname and current directory
• add to ~/.bashrc to make permanent
• more special characters

Complete Commands in Bash

• bash-completion (debian/ubuntu/homebrew)

Fast File Navigation - stop wasting your life on cd

• autojump (homebrew/debian/ubuntu)
• $ j [a few characters in the path]

Try Zsh - no one man should have all those z-shells ♫

• zsh
• oh-my-zsh
• community-driven framework for managing zsh configuration
• plugins
• terminal themes
• easily customizable

SSH Can Do That?

• multiple connections
• repeated connections
• hostname aliases
• don't need to type usernames
• persistent connections
• jumphost
• more

CTRL-P/N previous/next history entry
ALT-B/F back/forward one word

Git BASH prompt:
http://railstips.org/blog/archives/2009/02/02/bedazzle-your-bash-prompt-with-git-info/
http://repo.or.cz/w/git.git/blob/HEAD:/contrib/completion/git-completion.bash

David's dot files: https://github.com/davidxia
Neville's dot files: https://github.com/nevillelyh/dotfiles

Nic's awesomeness:

https://wiki.spotify.net/wiki/Howto:SSH_Proxy_Setup

If you elect to keep your dotfiles in git, you can use the following alias stolen from Pierre to prevent your home directory from being a giant git repo:

alias dotgit="GIT_DIR=$HOME/dotfiles.git GIT_WORK_TREE=$HOME git"

A simple tmux tutorial here:
http://blog.hawkhost.com/2010/06/28/tmux-the-terminal-multiplexer/

If you use iTerm2, in Preferences -> Profiles -> Keys
Left option key acts as: +Esc (default was normal)
This works with alt-b/f for backward/forward one word.

Git:
~/.gitconfig init.templatedir for global template, located in .dotfiles/git
2 hooks: commit-msg for Gerrit and ctags index rebuild after repo changes.

git add -p # stage changes one by one
git diff --cached # show staged changes
git diff HEADn # diff against n'th previous change
git rebase -i HEADn # rebase from n'th previous change

Checkout https://github.com/nevillelyh/dotfiles/tree/master/.dotfiles/scripts/
git-amend # amend stage changes to current HEAD, reuse commit message, useful for revising review
git-review # gerrit review

Bootstrapping, one script to rule them all:
https://github.com/nevillelyh/dotfiles/blob/master/.dotfiles/scripts/bootstrap-dotfiles.sh

To move in to a new machine (homebrew style):
bash -c "$(curl -fsSL https://raw.github.com/nevillelyh/dotfiles/master/.dotfiles/scripts/bootstrap-dotfiles.sh)"