bash tips & one-liners

.bash_colors

# Reset
NoColor='\[\e[m\]'       # Text Reset

# Regular Colors
Black='\[\e[0;30m\]'        # Black
Red='\[\e[0;31m\]'          # Red
Green='\[\e[0;32m\]'        # Green
Yellow='\[\e[0;33m\]'       # Yellow
Blue='\[\e[0;34m\]'         # Blue
Purple='\[\e[0;35m\]'       # Purple
Cyan='\[\e[0;36m\]'         # Cyan
White='\[\e[0;37m\]'        # White

# Bold
BBlack='\[\e[1;30m\]'       # Black
BRed='\[\e[1;31m\]'         # Red
BGreen='\[\e[1;32m\]'       # Green
BYellow='\[\e[1;33m\]'      # Yellow
BBlue='\[\e[1;34m\]'        # Blue
BPurple='\[\e[1;35m\]'      # Purple
BCyan='\[\e[1;36m\]'        # Cyan
BWhite='\[\e[1;37m\]'       # White

# Underline
UBlack='\[\e[4;30m\]'       # Black
URed='\[\e[4;31m\]'         # Red
UGreen='\[\e[4;32m\]'       # Green
UYellow='\[\e[4;33m\]'      # Yellow
UBlue='\[\e[4;34m\]'        # Blue
UPurple='\[\e[4;35m\]'      # Purple
UCyan='\[\e[4;36m\]'        # Cyan
UWhite='\[\e[4;37m\]'       # White

# Background
On_Black='\[\e[40m\]'       # Black
On_Red='\[\e[41m\]'         # Red
On_Green='\[\e[42m\]'       # Green
On_Yellow='\[\e[43m\]'      # Yellow
On_Blue='\[\e[44m\]'        # Blue
On_Purple='\[\e[45m\]'      # Purple
On_Cyan='\[\e[46m\]'        # Cyan
On_White='\[\e[47m\]'       # White

# High Intensity
IBlack='\[\e[0;90m\]'       # Black
IRed='\[\e[0;91m\]'         # Red
IGreen='\[\e[0;92m\]'       # Green
IYellow='\[\e[0;93m\]'      # Yellow
IBlue='\[\e[0;94m\]'        # Blue
IPurple='\[\e[0;95m\]'      # Purple
ICyan='\[\e[0;96m\]'        # Cyan
IWhite='\[\e[0;97m\]'       # White

# Bold High Intensity
BIBlack='\[\e[1;90m\]'      # Black
BIRed='\[\e[1;91m\]'        # Red
BIGreen='\[\e[1;92m\]'      # Green
BIYellow='\[\e[1;93m\]'     # Yellow
BIBlue='\[\e[1;94m\]'       # Blue
BIPurple='\[\e[1;95m\]'     # Purple
BICyan='\[\e[1;96m\]'       # Cyan
BIWhite='\[\e[1;97m\]'      # White

# High Intensity backgrounds
On_IBlack='\[\e[0;100m\]'   # Black
On_IRed='\[\e[0;101m\]'     # Red
On_IGreen='\[\e[0;102m\]'   # Green
On_IYellow='\[\e[0;103m\]'  # Yellow
On_IBlue='\[\e[0;104m\]'    # Blue
On_IPurple='\[\e[0;105m\]'  # Purple
On_ICyan='\[\e[0;106m\]'    # Cyan
On_IWhite='\[\e[0;107m\]'   # White

.bashrc

#move user executables to beginning of path
grep -q '/usr/local/bin' <<< "$PATH" &&
  export PATH=`echo "$PATH" | sed -E 's|(.*):/usr/local/bin(.*)|/usr/local/bin:\1\2|'`

#for coreutils and gnu-sed
export MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"
export PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
export MANPATH="/usr/local/opt/gnu-sed/libexec/gnuman:$MANPATH"
export PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"

#add timestamps to bash history
export HISTTIMEFORMAT='%F %T '

#enable shell colors (ls and others)
#from https://github.com/seebi/dircolors-solarized
eval `dircolors ~/.dircolors`

#add syntax highlighting to less via gnu source-highlight
export LESSOPEN="| `brew --prefix`/bin/src-hilite-lesspipe.sh %s"
export LESS=' -R '

#extended source-highlight definitions (see src-hilite-lesspipe.sh)
export SOURCE_HIGHLIGHT_BASH_EXT=".bashrc .profile"

alias grep='grep --color'
alias ls='ls --color'

alias ll='ls -lArth'
alias la='ls -A'
alias rm=trash

#growl() {
#  echo -ne "\e]9;${*}\007"
#}

if [ -f $(brew --prefix)/etc/bash_completion ]; then
	. $(brew --prefix)/etc/bash_completion
fi

source ~/.git-completion.sh

if [ -f $(brew --prefix)/etc/autojump.bash ]; then
  . $(brew --prefix)/etc/autojump.bash
fi

if [ -f $(brew --prefix)/etc/bash_completion.d/vagrant ]; then
  . $(brew --prefix)/etc/bash_completion.d/vagrant
fi

complete -C '/usr/local/bin/aws_completer' aws

export WORKON_HOME=~/.virtualenvs
export PROJECT_HOME=~
export VIRTUAL_ENV_DISABLE_PROMPT=1
source /usr/local/bin/virtualenvwrapper.sh

export ANSIBLE_NOCOWS=1

source ~/.bash_colors

#Handy git aliases
lastm() { git --no-pager log --merges -n1 --format='%H'; }
lastp() { git --no-pager rev-parse "@{u}"; }
alias gitcd='cd $(git rev-parse --show-toplevel)'
  

#-- Prompt --
shorten_path () {
  #arg: path to shorten (defaults to PWD)
  path="${1:-$PWD}"
  shortened=$(echo "${path/#$HOME/\~}" | awk -F "/" '
    {if (length($0) > 35)
      {if (NF>4)
        print $1 "/" $2 "/.../" $(NF-1) "/" $NF;
      else if (NF>3) 
        print $1 "/" $2 "/.../" $NF; 
      else 
        print $1 "/.../" $NF; 
    } else 
      print $0;}
  ')
  echo "${BGreen}${shortened}${NoColor}"
}

user_at_loc () {
  echo "${BBlue}\u${NoColor}@${BPurple}\h${NoColor}"
}

git_prompt () {
  git_branch=$(git symbolic-ref HEAD 2>&1)
  r=$?
  if [ "$git_branch" = "fatal: ref HEAD is not a symbolic ref" ]; then 
    echo "${Red}???${NoColor} "
  
  elif [ $r -eq 0 ]; then
    git_branch="${git_branch#refs/heads/}"
    s=`/usr/bin/git status`
    
    if grep -q "ahead of" <<<"$s"; then
      symbol="+"
    elif grep -q "behind" <<<"$s"; then
      symbol="-"
    elif grep -q "diverged" <<<"$s"; then
      symbol='!!'
    fi

    if grep -q "nothing to commit" <<<"$s"; then
      git_branch="${Green}($git_branch)${NoColor}"
    elif grep -q -E "Untracked files|not staged" <<<"$s"; then
      git_branch="${Yellow}($git_branch)${NoColor}"
    elif grep -q "Changes to be committed" <<<"$s"; then
      git_branch="${Red}($git_branch)${NoColor}"
    fi
    
    [ -n "$git_branch" ] && echo "${BYellow}${symbol}${NoColor}${git_branch}"
  fi
}

git_branch () {
  toplevel=$(git rev-parse --show-toplevel)
  echo "${BPurple}"$(basename "$toplevel")"${NoColor}"
}

git_path () {
  toplevel="$(git rev-parse --show-toplevel)"
  shortened=-$([ "$toplevel" != "$PWD" ] && shorten_path ${PWD#$toplevel})
  echo "${BGreen}$shortened${NoColor}"
}

set_prompt () {
  gitstuff=$(git_prompt)
  if [ -n "$VIRTUAL_ENV" ]; then
    venv="${Yellow}!${NoColor} "
  else
    venv=""
  fi

  if [ -n "$gitstuff" ]; then
    prompt="$(git_branch) $(git_prompt): $(git_path)"
  else
    prompt="$(user_at_loc): $(shorten_path)"
  fi
  export PS1="${venv}${prompt} ${BBlue}\$${NoColor} "
}

PROMPT_COMMAND="$PROMPT_COMMAND; set_prompt"

export SUDO_PS1="${IWhite}${On_Red}\u@\h: \W#${NoColor} "

# Use https://github.com/huyng/bashmarks and/or https://github.com/joelthelion/autojump
# for autojump, remember to source its .bash file

.gitconfig

# This is Git's per-user configuration file.
[core]
  ignorecase = false
[branch]
  autosetupmerge = true
  autosetuprebase = always
[push]
  default = simple

[alias]
  s = status

  #pretty git log
  lg = log --graph --format=format:'%C(red)%h%C(reset) - %C(green)(%ar)%C(reset) %C(bold blue)%an%C(reset)%C(yellow)%d%C(reset)%n          %s'
 
  #push a local branch to the remote
  pushb = !git push --set-upstream origin $(git symbolic-ref --short HEAD)
 
  #put all unpushed work on a new branch and reset this one
  switch = "!f() { [ `git rev-list @{u}.. | wc -l` = 0 ] && return; [ -z $1 ] && echo branch name required && return 1; git branch $1 && git reset --hard @{u} && git checkout $1; }; f"
 
  cmal = commit -a -m
  cmend = commit -a --amend --no-edit
  
  #open a pull request in github:
  # git pr: open a PR from the current branch against master
  # git pr <refname>: open a pr from the current branch against refname
  # git pr <ref1> <ref2>: open a pr from ref2 against ref1
  # Keep in mind that all refnames are from the remote's perspective, so "git pr master HEAD^" will use origin's head, aka the tip of master.  
  pr = "!f() { open https://github.com/$(git config --get remote.origin.url | sed -r 's|^.*[:/]([^/]+/[^/]+).git$|\\1|')/compare/${1-master}...${2-$(git symbolic-ref HEAD &> /dev/null && git rev-parse --abbrev-ref HEAD)}?expand=1; }; f"
  
  #Usage: git merged <ref1> [ref2]
  # Show whether ref 1 is merged into ref2 (default HEAD) 
  merged = "!f() { git merge-base --is-ancestor $1 ${2-HEAD} && echo \"$1 is merged into ${2-HEAD}\" && return 0 || echo \"$1 is NOT merged into ${2-HEAD}\" && return 1; }; f"
  
  #Delete all local branches that have been merged into master (as determined by the "git merged" alias)
  cleanup = "!git for-each-ref --format '%(refname)' refs/heads | grep -v 'master\\|release' | while read ref; do git merged $ref master >/dev/null && git branch -D ${ref#refs/heads/}; done"
  
  ch = checkout
  changed = !git --no-pager diff --name-status
  logs = log --name-status
  delbranch = push origin --delete

[user]
  name = Your Name Here
  email = [email protected]

[fetch]
  prune = true #WARNING: will remove local branches if they've been deleted from the remote

[init]
  #put a hooks directory in wherever this points to and they'll all get copied
  #into new cloned repos. MAKE SURE THEY'RE ALL EXECUTABLE!
  templatedir = ~/repos/.git-template

.inputrc

set completion-ignore-case on    "Case-insensitive tab complete
"\e[A": history-search-backward  "Search through history based on what you've already typed
"\e[B": history-search-forward   " Bound to up and down arrows
"\e[1;9C": forward-word          "Enable alt-forward and alt-back word skipping
"\e[1;9D": backward-word

onetime-setup.bash

#Makes iTerm scroll in bufferes with vim/less/etc. (nightly builds only)
defaults write com.googlecode.iterm2 AlternateMouseScroll -bool true

pre-push

#!/bin/bash

#Pre-push hook
# Install: put in .git/hooks/ (or add to existing pre-push file there)
# Warns about pushing to master, prompts user to switch to another branch
# Dependencies: pushb, pr, and switch aliases (see ~/.gitconfig)

if [ "`git symbolic-ref --short HEAD`" == 'master' ]; then
  i=0
  while read stuff; do
    ((i += 1))
  done
  [ $i -le 0 ] && exit  #no refs pushed, nothing to do

  echo "You are pushing to MASTER! Are you sure you want to continue?"
  echo "Enter the name of a new branch to switch all of your commits to, or if you're sure,"
  echo "enter "'"'"I'm sure I want to push to master"'"'" (or CTRL+C to exit)"
  exec < /dev/tty   #see http://stackoverflow.com/questions/3417896/how-do-i-prompt-the-user-from-within-a-commit-msg-hook
  read -p '> ' input
  [ "$input" = "I'm sure I want to push to master" ] && exit 0
  
  git switch $input
  git pushb
  
  sleep .1  #github takes a sec to register the branch
  git pr
  
  exit 1  #blocks original push
fi

src-hilite-lesspipe.sh

#! /bin/sh

# My extensions to the standard src-hilite-lesspipe.sh provided by gnu source-highlight
# Adds an environment variable SOURCE_HIGHLIGHT_BASH_EXT that defines additional specific files
# that should be highlighted as bash

for source in "$@"; do
    case $source in
  *ChangeLog|*changelog)
        source-highlight --failsafe -f esc --lang-def=changelog.lang --style-file=esc.style -i "$source" ;;
  *Makefile|*makefile)
        source-highlight --failsafe -f esc --lang-def=makefile.lang --style-file=esc.style -i "$source" ;;
  *)
    grep -q `basename $source` <<< $SOURCE_HIGHLIGHT_BASH_EXT &&
      source-highlight --failsafe -f esc --lang-def=sh.lang --style-file=esc.style -i "$source"

    source-highlight --failsafe --infer-lang -f esc --style-file=esc.style -i "$source"
    ;;
    esac
done