My Git Merge command

git-m

#!/bin/bash -x
set -e

#by naming this git-m and putting it in your PATH, git will be able to run it when you type "git m ..."

if [ "$#" -ne 2 ]
then
        echo "Wrong number of arguments.  Should be 2, was $#";
        exit 1;
fi

git show-branch $2 || (echo "$2 is not an exiting branch" && exit 1);

git checkout $1;
git merge --ff-only $2;
git branch -d $2;