Shell script for merging from git to subversion

gistfile1.txt

gitmerge() {
    #Commands this needs
    CURL=`which curl`
    GREP="/usr/bin/grep"
    AWK=`which awk`
    TR=`which tr`
    UNIQ=`which uniq`
    SVN=`which svn`
    MKTEMP=`which mktemp`
    CUT=`which cut`
    PASTE=`which paste`
    PBCOPY=`which pbcopy`

    tmpdir=$( $MKTEMP -d /tmp/XXX )
    if [ "$1" ]; then
        echo "Created temp directory $tmpdir"
        tmpfile=$tmpdir/$1
        command $CURL -sL https://github.com/sakaiproject/sakai/pull/$1.patch > $tmpfile
        $SVN --strip 0 patch $tmpfile 2>&1 | tee $tmpdir/svn.results
        if [ "$?" = "0" ]; then
            tool=`$GREP "^+++" $tmpfile | $CUT -d '/' -f 2 | $UNIQ | $PASTE -s -d ' ' -`
            if [ -n "${tool}" ]; then
                echo "Patching succeeded to [$tool]"
                conflicts=$( $GREP "^C" $tmpdir/svn.results )
                if [ -n "${conflicts}" ]; then
                    echo "There were conflicts see $tmpdir/svn.results, please fix the rejects"
                else
                    echo "Removing temp directory $tmpdir"
                    rm -rf $tmpdir
                fi
            else
                echo "Tool was not identified in the patch"
                return
            fi
        else
            echo "There was some failure patching, please check the output above"
            return
        fi
        if [ -n "$2" ]; then
            PASTE_BUFFER="svn commit -m \"$2 merge PR $1 from git\" $tool"
        else
            PASTE_BUFFER="svn commit -m \"SAK-XXXXX merge PR $1 from git\" $tool"
        fi
        echo -n "$PASTE_BUFFER" | $PBCOPY
        echo "Copied to clipboard: $PASTE_BUFFER"
    else
        echo "USAGE:"
        echo "   gitmerge PR# JIRA#"
        echo "      examples:"
        echo "         gitmerge 278"
        echo "         gitmerge 278 SAK-29150"
    fi
}