Enhanced Terminal Prompt for Mac OS X (keywords: bash, shell)

bash_aliases

# Repeat a command N times
# From: http://www.stefanoforenza.com/how-to-repeat-a-shell-command-n-times/
repeat() {
    n=$1
    shift
    while [ $(( n -= 1 )) -ge 0 ]
    do
        "$@"
    done
}

# Goes to N directories upwards.
# ${1-1} means the first argument or the default value "1" if it is not set.
# ${parameter-default} as from: http://tldp.org/LDP/abs/html/parameter-substitution.html
up() {
    repeat ${1-1} cd ..
}

bash_profile

# System-wide .profile for sh(1)

# To be placed in /etc/profile or ~/.bash_profile

if [ -x /usr/libexec/path_helper ]; then
	eval `/usr/libexec/path_helper -s`
fi

# include .bashrc if it exists
if [ -f ~/.bashrc ]; then
    source ~/.bashrc
fi

# include .bash_aliases if it exists
if [ -f ~/.bash_aliases ]; then
    source ~/.bash_aliases
fi

alias reload='source ~/.bash_profile'
alias reload_prompt='source ~/.bashrc'

alias dev="cd ~/Dropbox/dev"

alias la='ls -la'
alias tree="find . -print | sed -e 's;[^/]*/;|____;g;s;____|; |;g'"

alias showall='defaults write com.apple.Finder AppleShowAllFiles true'
alias showallnot='defaults write com.apple.Finder AppleShowAllFiles false'

bashrc

# System-wide .bashrc file for interactive bash(1) shells.

###############################################################################
# Custom commands and aliases
###############################################################################

# Repeat a command N times
# From: http://www.stefanoforenza.com/how-to-repeat-a-shell-command-n-times/
repeat() {
  n=$1
  shift
  while [ $(( n -= 1 )) -ge 0 ]
  do
    "$@"
  done
}

# Create N number of files with given ext in the current dir
# Used without params, it creates 1 file of the form tmp-XXXX.txt
tmpfiles() {
  n="${1:-1}"
  extention="${2:-txt}"
  extention="${extention#.}"
  while [ $(( n -= 1 )) -ge 0 ]
  do
    f=$(mktemp "tmp-XXXX")
    mv "${f}" "${f}.${extention}"
  done
}

# Goes to N directories upwards.
# ${1-1} means the first argument or the default value "1" if it is not set.
# ${parameter-default} as from: http://tldp.org/LDP/abs/html/parameter-substitution.html
up() {
  repeat ${1-1} cd ..
}

# Goes to the previous directory
back() {
  cd "${OLDPWD}"
}

# Goes to the home directory
home() {
  cd ~
}

# Change directory creating it if it doesn't exists.
cdf() {
  if [ ! -d $1 ]; then
    mkdir -p $1;
  fi
  cd $1;
}

datestamp() {
  echo $(date +"%Y%m%d")
}

timestamp() {
  echo $(date +"%Y%m%d%H%M%S")
}

# cdf into a folder with current date
today() {
  if [[ "$(basename $(pwd))" =~ 20[1-9][0-9][0-1][0-9][0-3][0-9] ]]; then
    echo "Already in a datestamped folder: $(pwd)"
    echo "Nothing to do."
  else
    cdf "$(datestamp)"
  fi
 }

# Generate uuid using Python
uuid() {
  repeat ${1-1} python -c "import uuid; print uuid.uuid4();"
}

# Duplicate a file adding the extention .bak_[timestamp]
backup() {
  if [ -z "${1}" ]
  then
    echo "Missing file to backup. Nothing to do."
    return 1
  fi
  BACKUP_FILENAME="${1}.bak_$(date +"%Y%m%d%H%M%S")";
  cp "${1}" "${BACKUP_FILENAME}" && echo "Backup created: ${BACKUP_FILENAME}";
}

create_subl_project_file() {
  filename="$(basename $(pwd)).sublime-project"
  [ -f "${filename}" ] && backup "${filename}"
  cat << EOF > "${filename}"
{
  "folders":
  [
    {
      "path": ".",
      "folder_exclude_patterns": ["tmp", "bin", "log"],
    }
  ]
}

EOF
 echo "${filename}"
}

stt() {
  filename="$(ls -1 *.sublime-project 2>/dev/null | head -1)"
  if [ -z "${filename}" ];then
    echo "Creating a default '.sublime-project' file for this folder..."
    filename="$(create_subl_project_file)"
  fi
  echo "Opening project ${filename} with SublimeText 3..."
  subl --project "${filename}"
}

# List files (containing $2 in the name) containing a string ($1) begining from the current dir
# "${@:3}" Stands for all parameters from the third (included) on. (From: http://wiki.bash-hackers.org/scripting/posparams#mass_usage)
hgrep() {
  if [ $# -gt 0 ]; then
    egrep "$1" -i -n -r . --colour --include "*$2*" "${@:3}"
  fi
}

# lsnc List Network Connections
lsnc(){
  lsof -i -n -c 16| awk '{print $1 "\t\t" $9 "  " $10}' | uniq | grep -v COMMAND | egrep -v "\->127.0.0.1:.*"
}

# Primarily used for the prompt function.
truncate_string() {
  local string="${1}"
  local maxlen=${2:-25}
  local trunc_symbol=${3:-"…"}
  if [ "${#string}" -gt "${maxlen}" ]; then
    string="${string:0:$maxlen}${trunc_symbol}"
  fi
  echo "${string}"
}


alias la='ls -laGFTB'
# To make it equivalent to CentOS machines and others deployed with SlipStream
alias ll='ls -lG'

alias tree="find . -print | sed -e 's;[^/]*/;|____;g;s;____|; |;g'"

alias showall='defaults write com.apple.Finder AppleShowAllFiles true'
alias showallnot='defaults write com.apple.Finder AppleShowAllFiles false'

# Include user custom aliases if defined
if [ -f ~/.bash_aliases ]; then
    source ~/.bash_aliases
fi

alias reload_aliases='source ~/.bash_aliases'
alias reload_bashrc='source /etc/bashrc'



###############################################################################
# Enhanced Terminal Prompt
# Mac OS X 10.6 Version (Snow Leopard)
# Original from: http://phil.cryer.us/code/dotfiles/bashrc
###############################################################################

# Example:
# 14:42:52 username@hostname ~/somedirectory$

# In directories with a git repository, it will display the current branch in:
# - green: for a clean branch (HEAD and index clean)
# - orange: if the HEAD is clean but there are files to commit in the index
# - red: if there are modified files in the HEAD
# Original from: http://vvv.tobiassjosten.net/bash/dynamic-prompt-with-git-and-ansi-colors

# Example:
# 14:42:52 username@hostname ~/somedirectory [master]$


# To be placed in /etc/bashrc or ~/.bashrc

##################################################
# Fancy PWD display function
##################################################
# The home directory (HOME) is replaced with a ~
# The last pwdmaxlen characters of the PWD are displayed
# Leading partial directory names are striped off
# /home/me/stuff          -> ~/stuff               if USER=me
# /usr/share/big_dir_name -> ../share/big_dir_name if pwdmaxlen=20
##################################################

bash_prompt_command() {
  local OLD_PWD="${NEW_PWD}"
  # How many characters of the $PWD should be kept
  local pwdmaxlen=24
  # Indicate that there has been dir truncation
  local trunc_symbol=".."
  local dir=${PWD##*/}
  pwdmaxlen=$(( ( pwdmaxlen < ${#dir} ) ? ${#dir} : pwdmaxlen ))
  NEW_PWD=${PWD/$HOME/\~}
  local pwdoffset=$(( ${#NEW_PWD} - pwdmaxlen ))
  if [ ${pwdoffset} -gt "0" ]
    then
    NEW_PWD=${NEW_PWD:$pwdoffset:$pwdmaxlen}
    NEW_PWD=${trunc_symbol}/${NEW_PWD#*/}
  fi
  # Check if we changed dir since last time
  local IS_NEW_PWD=false
  if [ "${NEW_PWD}" != "${OLD_PWD}" ]; then
    local IS_NEW_PWD=true
  fi

  # Setup variable for current git branch, if available
  if ! git rev-parse --git-dir > /dev/null 2>&1; then
    GIT_CURRENT_BRANCH=""
    GIT_CURRENT_BRANCH_STATE_COLOR=""
    GIT_CURRENT_BRANCH_UNTRACKED_FILES=""
  else
    if ! git diff --quiet 2>/dev/null >&2; then
      GIT_CURRENT_BRANCH_STATE_COLOR='\[\033[0;31m\]' #git dirty HEAD
    else
      if ! git diff --cached --quiet 2>/dev/null >&2; then
        GIT_CURRENT_BRANCH_STATE_COLOR='\[\033[0;33m\]' #git dirty index
      else
        GIT_CURRENT_BRANCH_STATE_COLOR='\[\033[0;32m\]' #git clean branch
      fi
    fi
                if git ls-files --others --exclude-standard --error-unmatch "./$(git rev-parse --show-cdup 2>/dev/null)" 2>/dev/null >&2; then
      GIT_CURRENT_BRANCH_UNTRACKED_FILES='+??' #git untracked files
                else
      GIT_CURRENT_BRANCH_UNTRACKED_FILES='' #git no untracked files
    fi
    GIT_CURRENT_BRANCH="$(git branch 2>/dev/null| sed -n '/^\*/s/^\* //p')${GIT_CURRENT_BRANCH_UNTRACKED_FILES}"
    GIT_CURRENT_BRANCH=" [$(truncate_string "${GIT_CURRENT_BRANCH}" 15)]"
  fi
  bash_prompt # call again this function to update PS1 to use corresponding GIT_CURRENT_BRANCH_STATE_COLOR
  if $IS_NEW_PWD && [ -n "${GIT_CURRENT_BRANCH}" ]; then
     ( [ -n "$(git remote)" ] && ping -t 1 -c 1 github.com 1>/dev/null && git fetch & ) # Silent and async
     # [ -n "$(git remote)" ] && ping -t 1 -c 1 github.com 1>/dev/null && git fetch # Silent and sync
    git status -sb
  fi
}

bash_prompt() {
  local NONE='\[\033[0m\]'    # unsets color to term's fg color

# NB: Unused Colors disabled

        # regular colors
# local K='\[\033[0;30m\]'    # black
  local R='\[\033[0;31m\]'    # red
# local G='\[\033[0;32m\]'    # green
# local Y='\[\033[0;33m\]'    # yellow
  local B='\[\033[0;34m\]'    # blue
# local M='\[\033[0;35m\]'    # magenta
# local C='\[\033[0;36m\]'    # cyan
# local W='\[\033[0;37m\]'    # white

  # empahsized (bolded) colors
# local EMK='\[\033[1;30m\]'
# local EMR='\[\033[1;31m\]'
# local EMG='\[\033[1;32m\]'
# local EMY='\[\033[1;33m\]'
# local EMB='\[\033[1;34m\]'
# local EMM='\[\033[1;35m\]'
# local EMC='\[\033[1;36m\]'
# local EMW='\[\033[1;37m\]'

  # background colors
# local BGK='\[\033[40m\]'
# local BGR='\[\033[41m\]'
# local BGG='\[\033[42m\]'
# local BGY='\[\033[43m\]'
# local BGB='\[\033[44m\]'
# local BGM='\[\033[45m\]'
# local BGC='\[\033[46m\]'
# local BGW='\[\033[47m\]'

  local UC=$C                 # user's color
        [ $UID -eq "0" ] && UC=$R   # root's color

  #PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"'
  #PS1="${EMK}[${UC}\u${EMR}@${UC}\h ${EMB}\${NEW_PWD}${EMK}]${UC}\\$ ${NONE}"

  if [ -z ${TMUX+x} ]; then
    # TMUX is not set, so we are not in a TMUX session
    # We include the username and hostname into the prompt
    PS1="${NONE}\t ${R}\u@\h ${B}\${NEW_PWD}${NONE}${G}${GIT_CURRENT_BRANCH_STATE_COLOR}\${GIT_CURRENT_BRANCH}${NONE}\$ ${NONE}"
    # PS1="${NONE}[\t${NONE}] ${NONE}[${R}\u${R}@${R}\h ${B}\${NEW_PWD}${NONE}]${G}${GIT_CURRENT_BRANCH_STATE_COLOR}\${GIT_CURRENT_BRANCH}${NONE}\\$ ${NONE}"
  else
    # TMUX is set, so we are in a TMUX session
    # We don't need to include the username and hostname into the prompt since it's in TMUX's status bar.
    PS1="${NONE}\t ${B}\${NEW_PWD}${NONE}${G}${GIT_CURRENT_BRANCH_STATE_COLOR}\${GIT_CURRENT_BRANCH}${NONE}\$ ${NONE}"
  fi
  SUDO_PS1="${NONE}[\t${NONE}] ${NONE}[${R}\u${R}@${R}\h ${B}\${NEW_PWD}${NONE}]${G}\${GIT_CURRENT_BRANCH}${NONE}\\$ ${NONE}"
}

PROMPT_COMMAND=bash_prompt_command
bash_prompt
#unset bash_prompt # Don't unset this function if updating the PS1 variable every time

# autocompletes
# NOTE: To install the git autocomplete script execute:
#       sudo curl -sSL https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash -o /etc/bash_completion.d/git-completion.bash --create-dirs
if [ ! -f /etc/bash_completion ]; then
  # In case the /etc/bash_completion file exists, is surely already called by the former bashrc.
  for f in /etc/bash_completion.d/*; do
    [ -f $f ] && source $f
  done

  # brew is probably installing completion scripts here
  if [ -d /usr/local/etc/bash_completion.d/ ]; then
    for f in /usr/local/etc/bash_completion.d/*; do
      [ -f $f ] && source $f
    done
  fi
fi

#ORIGINAL BASHRC PS1 DEFINITION:
#if [ -z "$PS1" ]; then
#   return
#fi
#
#PS1='\h:\W \u\$ '

# Make bash check its window size after a process completes
shopt -s checkwinsize

# SOURCE: https://discourse.brew.sh/t/failed-to-set-locale-category-lc-numeric-to-en-ru/5092/12
export LC_ALL=en_US.UTF-8

# Change behavior of fzf dialogue
# SOURCE: https://medium.com/free-code-camp/fzf-a-command-line-fuzzy-finder-missing-demo-a7de312403ff
# SOURCE: https://gist.github.com/samoshkin/efc6672b13b4244f000cfc4b0c4d6125
export FZF_DEFAULT_OPTS="--no-mouse --height 50% --select-1 --reverse --multi --inline-info --preview='if [[ -d {} ]]; then ls -lahGFTB {}; elif [[ \$(file --mime {}) =~ binary ]]; then echo {} is a binary file; else (BAT_LINE=\$(echo {} | grep \":\\d\\d*\\b\" | sed \"s/[^:]*:\([0-9][0-9]*\).*/\\1/g\"); bat \$(echo {} | sed \"s/:.*//g\") \$( [ -n \"\${BAT_LINE}\" ] && echo \"--highlight-line \${BAT_LINE} --line-range \$(( \${BAT_LINE} - 10 < 1 ? 1 : \${BAT_LINE} - 10 )):\") --style=numbers --color=always || cat {}) 3> /dev/null | head -300; fi;' --preview-window='right:wrap' --bind='space:execute(bat --style=numbers {} || less -f {}),ctrl-p:toggle-preview,ctrl-d:half-page-down,ctrl-u:half-page-up,ctrl-a:select-all+accept,ctrl-y:execute-silent(echo {+} | pbcopy),ctrl-o:execute(vim {+})+accept,esc:cancel'"

[ -f ~/.fzf.bash ] && source ~/.fzf.bash

# SOURCE: https://github.com/junegunn/fzf#settings
# Use fd (https://github.com/sharkdp/fd) instead of the default find
# command for listing path candidates.
# - The first argument to the function ($1) is the base path to start traversal
# - See the source code (completion.{bash,zsh}) for the details.
_fzf_compgen_path() {
  fd --hidden --follow --exclude ".git" . "$1"
}

# Use fd to generate the list for directory completion
_fzf_compgen_dir() {
  fd --type d --follow --exclude ".git" . "$1"
}