A fine .bashrc

.bashrc

# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples

# If not running interactively, don't do anything
case $- in
    *i*) ;;
      *) return;;
esac

JAVA_HOME=/home/labuser/w/devtools/linux/jdk1.8.0_202_x64
export JAVA_HOME

# don't put duplicate lines or lines starting with space in the history.
# See bash(1) for more options
HISTCONTROL=ignoreboth

# append to the history file, don't overwrite it
shopt -s histappend

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTFILE=/home/labuser/.bash_history
HISTSIZE=10000
HISTFILESIZE=20000

# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize

# If set, the pattern "**" used in a pathname expansion context will
# match all files and zero or more directories and subdirectories.
#shopt -s globstar

# make less more friendly for non-text input files, see lesspipe(1)
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"

# set variable identifying the chroot you work in (used in the prompt below)
if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
    debian_chroot=$(cat /etc/debian_chroot)
fi

# set a fancy prompt (non-color, unless we know we "want" color)
case "$TERM" in
    xterm-color|*-256color) color_prompt=yes;;
esac

# If this is an xterm set the title to dir
case "$TERM" in
xterm*|rxvt*)
    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\w\a\]$PS1"
    ;;
*)
    ;;
esac

# enable color support of ls and also add handy aliases
if [ -x /usr/bin/dircolors ]; then
    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
    alias ls='ls --color=auto'
    #alias dir='dir --color=auto'
    #alias vdir='vdir --color=auto'

    alias grep='grep --color=auto'
    alias fgrep='fgrep --color=auto'
    alias egrep='egrep --color=auto'
fi

function timer_start {
  bashrc_timer=${bashrc_timer:-$SECONDS}
}

function timer_stop {
  bashrc_timer_show=$(($SECONDS - $bashrc_timer))
  unset bashrc_timer
}

trap 'timer_start' DEBUG

# http://stackoverflow.com/a/16715681
PROMPT_COMMAND=__prompt_command  # Func to gen PS1 after CMDs
function __prompt_command() {
    local EXIT="$?"             # This needs to be first

    timer_stop

    PS1=""

    local RCol='\[\e[0m\]'

    local Red='\[\e[0;31m\]'
    local BRed='\[\e[1;31m\]'
    local Gre='\[\e[0;32m\]'
    local BGre='\[\e[1;32m\]'
    local BYel='\[\e[1;33m\]'
    local BBlu='\[\e[1;34m\]'
    local Blu='\[\e[0;34m\]'
    local Pur='\[\e[0;35m\]'

    PS1+='${debian_chroot:+($debian_chroot)}'
    PS1+="${BGre}\u@\h"
    PS1+="${BBlu} \w"
    PS1+="$Gre"
    if [ "$BRC_HAS_GIT" -ne 0 ]; then
        PS1+='$(__git_ps1 " %s")'
    fi
    if [[ $EXIT != 0 ]]; then
        PS1+=" ${BRed}${EXIT}"      # Add red if exit code non 0
    fi

    if [ ${bashrc_timer_show:-0} -gt 4 ]; then
        PS1+="$RCol"
        if [ ${bashrc_timer_show:-0} -gt 99 ]; then
            PS1+=" $((${bashrc_timer_show} / 60))m"
            PS1+=" $((${bashrc_timer_show} % 60))s"
        else
            PS1+=" ${bashrc_timer_show}s"
        fi
    fi
    PS1+="\n${BBlu}\$${RCol} "

    if [[ "$TERM" != "linux" ]]; then
        local title="${PWD/$HOME/\~}"
        echo -ne "\033]0;${title}\007"
    fi
}

# colored GCC warnings and errors
export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'

# some more ls aliases
alias ll='ls -alF'
alias la='ls -A'
alias l='ls -CF'

# Add an "alert" alias for long running commands.  Use like so:
#   sleep 10; alert
alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'


# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.

alias 'g=gvim --remote-silent >/dev/null 2>/dev/null'

if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
fi

# enable programmable completion features (you don't need to enable
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
if ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
  fi
fi

if [ -f ~/.bash_dynatrace ]; then
	. ~/.bash_dynatrace
fi

if [ -f ~/.bazel/bin/bazel-complete.bash ]; then
  . ~/.bazel/bin/bazel-complete.bash
fi

BRC_HAS_GIT=0
if [ -f /usr/share/git/git-prompt.sh ]; then
  . /usr/share/git/git-prompt.sh
  BRC_HAS_GIT=1
fi