Added bs script

bs

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+# Branch Stack, think pushd + popd, but for git branches
+# Author: Skiqqy
+
+# Recommended Usage:
+# Add the below aliases, behavior is identical to pushd and popd
+# alias pushb='bs push' # pushd
+# alias popb='bs pop' popd
+# alias birs='bs' # dirs
+
+# Print top of stack, and remove
+# Usage: pop
+pop()
+{
+	tail -n 1 "$stack"
+	head -n $(($(wc -l "$stack" | cut -d " " -f 1)-1)) "$stack" > "$stack.tmp"
+	mv "$stack.tmp" "$stack"
+}
+
+# Push NAME to top of stack
+# Usage: push NAME
+push()
+{
+	[ -z "$1" ] && return 1
+	echo "$1" >> "$stack"
+}
+
+main()
+{
+	stack=/tmp/bs"${PWD//\//.}".stack # Each repository gets its own stack
+	cbranch=$(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')
+	[ -z "$cbranch" ] && echo 'ERR: Not inside a repository' && return 1
+
+	case "$1" in
+		--help|help|-h)
+			cat << EOF
+
+  $(basename "$0") ~ pushd/popd for git branches
+
+    Usage: $ $(basename "$0") [--help] push|pop [NAME]
+
+EOF
+			;;
+		push)
+			[ -z "$2" ] && echo "Usage: $ $(basename "$0") push NAME" && return 1
+			git checkout "$2" || return 1 # pushd
+			push "$cbranch"
+			;;
+		pop)
+			cbranch=$(pop "$cbranch")
+
+			if [ -z "$cbranch" ]
+			then
+				echo "ERR: The stack is empty"
+				return 1
+			fi
+
+			git checkout "$cbranch"
+			;;
+		*)
+			if [ "$(wc -l /tmp/bs.home.skippy.bin.stack | cut -d " " -f 1)" -eq 0 ]
+			then
+				echo "Stack is empty..."
+			else
+				tac "$stack" # print the stack
+			fi
+			;;
+	esac
+}
+
+main "$@"