part: fancyprompt - credits to marcel, but heavily modified and stripped down

bash_profile.d/zz_fancyprompt.sh

@@ -0,0 +1,114 @@
+#!/bin/bash
+
+function signal() {
+	echo "$@" > ~/.signal
+}
+function silent() {
+	rm ~/.signal
+}
+
+# Check for an interactive session
+[ -z "$PS1" ] && return
+
+
+# https://wiki.archlinux.org/index.php/Color_Bash_Prompt#Wolfman.27s
+##################################################
+# 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() {
+	PROMPTRET="$?"
+	if [ $PROMPTRET == 0 ];
+	then
+		PROMPTRET=""
+	else
+	  PROMPTRET=" $PROMPTRET"
+	fi
+	if [ -e ~/.signal ]
+	then
+		SIGNAL=$(cat ~/.signal)
+		[ -z "$SIGNAL" ] && SIGNAL="signal"
+		SIGNAL="[$SIGNAL]"
+	else
+		SIGNAL=""
+	fi
+
+	end_time=$(date +%s)
+	NEWF=''
+	local mfiles=$(find . -maxdepth 1 -type f -newermt '5 sec ago')
+	if [ -n "$mfiles" ]; then
+		NEWF=" $(ls -rt $mfiles 2>/dev/null | tail -3 | xargs -n 1 basename 2>/dev/null | tr '\n' ' ' )"
+	fi
+
+	# How many characters of the $PWD should be kept
+	local pwdmaxlen=30
+	# Indicate that there has been dir truncation
+	local trunc_symbol="..."
+	local dir=${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
+
+	GIT_INFO=$(git_info)
+}
+
+
+git_info () {
+	GITSTATUS=$(LC_ALL=C git status 2>&1 | tr -d '#' | awk '
+	BEGIN {
+        }
+        /fatal:/		              { exit(1) }
+        /On branch/	              { branch=$3 }
+        /detached at/	            { branch="detached at " $4 }
+        /working directory clean/ { clean=" clean" }
+        /branch is up-to-date/    { commits="" }
+        /branch is ahead/         { commits="+" $8}
+        /branch is behind/        { commits="-" $7}
+        /have diverged/           { commits=" diverged"}
+        /to be committed/         { staged=1; clean = " " }
+        /modified:/	              { modified="M" }
+        /deleted:/		            { deleted="D" }
+        /new file:/	              { newfile="N" }
+        /Untracked/	              { untracked="?" }
+        /not staged/	            { staged=0; clean = " " }
+	END {
+    print( "("branch commits clean untracked modified deleted newfile ") ")
+	}
+	')
+	Q=$?
+#	  print(EMW "(" EM branch W commits clean R untracked B modified R deleted G newfile EMW ") ")
+	  	# There seems to be no way to expand colored values into PS1 w/o breaking the length magic,
+	# so we re-set it every time
+
+  PS1STR="";
+	if [ $Q == 0 ]; then {
+	    PS1STR="${GITSTATUS}";
+  } fi
+  echo -e $PS1STR
+}
+
+bash_prompt() {
+	local EMG="\[\033[1;32m\]"
+	local EMB="\[\033[1;34m\]"
+  local PSIGN="$"
+  trap 'echo -ne "\033[0;37m"' DEBUG
+	PS1="[\u@\h::\${NEW_PWD}\${NEWF}]\${SIGNAL} ${EMB}\${GIT_INFO}${EMG} ${PSIGN} "
+	BASE_PS1="$PS1" # for git_info
+}
+
+
+
+PROMPT_COMMAND=bash_prompt_command
+bash_prompt
+unset bash_prompt