converting shell script to bash script

can anyone help me by converting this shell script to bash script pl.

my shell scrpit is as follows

#!/bin/bash


IN="ifa_in_B2C=ifa_inB2C;ifa_in_ERP_Soap=ifa_inERP;sm=sm_main;tp=tp_main;trp=trp_main;usr=usr_main;wl=wl_main;pe_notification_email=pe_email;pe_notification_sms=pe_sms;pe_group_calc=pe_group;ifa_out_sms=ifa_outSMS;ifa_out_email=ifa_outEmail;ifa_out_oxiB2C=ifa_outOxi;ifa_out_OMTS=ifa_outOMTS;log=log_main;sys=sys_main;ifa_sys=ifa_sys;sm_sys=sm_sys;sp=sp_main;usr_sys=usr_sys;cache_reload=cache_reload"

export GOPATH=C:/Users/user/Desktop/nxtxn-b2c
export PATH=$PATH:C:/Users/user/Desktop/nxtxn-b2c/srcC:/Users/user/Documents/nxtxn-b2c/src:C:/Go/bin
arr=$(echo $IN | tr ";" "n")
echo "No of Arguments Passed is "$#
if [ "$#" -gt "2" ] || [ "$#" == "2" ]; then
        DATE=`date +%Y-%m-%d:%H:%M:%S`
        BUILD_ARG=""
        echo $DATE
        if [ "$3" == "buildversion" ]; then
                echo "ENTER the Version no"
                read VERSION_NO
                echo "ENTER Version Description"
                read VERSION_DESP
                if [ "$VERSION_NO" == "" ]; then
                        $BUILD_ARG=""
                else 
                        TEMP=""-X main.version $VERSION_NO -X main.version_date $DATE -X main.version_desc $VERSION_DESP""
                        echo $TEMP
                        BUILD_ARG="-ldflags "
                        BUILD_ARG=$BUILD_ARG$TEMP
                fi
        else
                echo "Wrong 3rd argument: Use buildversion to create version tags"
        fi
        echo "Build Arguments : "$BUILD_ARG

        echo "METHOD:$1 SUBSYS:$2"
        echo "GOPATH : $GOPATH"
        for subsys in $arr
        do
                        IFS='=' read -a arr_tmp <<< "$subsys"
                        echo "%%%%%%%%%%%%%%%%%%%%%%%%%  START   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"
                        echo "SUBSYS: ${arr_tmp[0]}"
                        subsys_pkg=${arr_tmp[0]}"_pkg"
                        echo "$subsys_pkg"
                        subsys_main=${arr_tmp[0]}"_main"
                        if [[ ${arr_tmp[0]} != pe* ]] ; then
                                main_path="$GOPATH/src/${arr_tmp[0]}/$subsys_main"
                        else
                                main_path="$GOPATH/src/pe/${arr_tmp[0]}/$subsys_main"
                        fi

                        if [[ ${arr_tmp[0]} != pe* ]] ; then
                                cd "$GOPATH/src/${arr_tmp[0]}/$subsys_pkg"
                        else
                                cd "$GOPATH/src/pe/${arr_tmp[0]}/$subsys_pkg"
                        fi
                if [ "$1" == "build" ]; then
                                        if [ "$2" == "all" ]; then
                                                cd $main_path
                                                echo "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"
                                                eval go install -v -x $BUILD_ARG
                                                ret_cmd=$?
                                                error_msg="ERROR : Failed to run the build command!"
                                            if [ $ret_cmd != 0 ]; then
                                                        echo "$error_msg"
                                                        exit;
                                                fi
                                                mv $GOPATH/bin/${arr_tmp[0]}"_main" $GOPATH/bin/${arr_tmp[1]}
                       echo "BUILT and INSTALLED : ${arr_tmp[0]}"
                                        elif [ "$2" == ${arr_tmp[0]} ]; then
                                                cd $main_path
                                                echo "***********%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%***********"
                                                eval go install -v -x $BUILD_ARG
                                                ret_cmd=$?
                                                error_msg="ERROR : Failed to run the build command!"
                                            if [ $ret_cmd != 0 ]; then
                                                        echo "$error_msg"
                                                        exit;
                                                fi
                                                mv $GOPATH/bin/${arr_tmp[0]}"_main" $GOPATH/bin/${arr_tmp[1]}
                        echo "BUILT and INSTALLED : ${arr_tmp[0]}"
                                                break
                                                                                                                               78,1-8        40%
                                        fi
                elif [ $1 == "cleanbuild" ]; then
                                        if [ $2 == "all" ]; then
                                                echo "**********************    CLEAN      ***************************"
                                                cd $main_path
                                                go clean -i -x
                                                echo "****************************************************************"
                                                eval go install -v -x $BUILD_ARG
                                                ret_cmd=$?
                                                error_msg="ERROR : Failed to run the build command!"
                                            if [ $ret_cmd != 0 ]; then
                                                        echo "$error_msg"
                                                        exit;
                                                fi
                                                mv $GOPATH/bin/${arr_tmp[0]}"_main" $GOPATH/bin/${arr_tmp[1]}
                                                #eval go install -v -x $BUILD_ARG
                       echo "CLEANED and INSTALLED : ${arr_tmp[0]}"
                                        elif [ $2 == ${arr_tmp[0]} ]; then
                                                echo "**********************    CLEAN      ***************************"
                                                cd $main_path
                                                go clean -i -x
                                                echo "%%%%%%%*************************************************%%%%%%%%"
#                                               eval go build -v -x $BUILD_ARG 
                                                eval go install -v -x $BUILD_ARG
                                                ret_cmd=$?
                                                error_msg="ERROR : Failed to run the build command!"
                                            if [ $ret_cmd != 0 ]; then
                                                        echo "$error_msg"
                                                        exit;
                                                fi
                                                mv $GOPATH/bin/${arr_tmp[0]}"_main" $GOPATH/bin/${arr_tmp[1]}
                       echo "CLEANED and INSTALLED : ${arr_tmp[0]}"
                                                break
                        fi
                elif [ $1 == "clean" ]; then
                                        if [ $2 == "all" ]; then
                                                echo "**********************    CLEAN ONLY      ***************************"
                                                cd $main_path
                                                go clean -i -x
                                                echo "****************************************************************"
 echo "CLEANED : $subsys"
                                        elif [ $2 == ${arr_tmp[0]} ]; then
                                                echo "**********************    CLEAN      ***************************"
                                                cd $main_path
                                                go clean -i -x
                                                echo "%%%%%%%*************************************************%%%%%%%%"
                       echo "CLEANED and INSTALLED : $subsys"
                                                break
                        fi
                else
                        echo "wrong first argument. Use build|cleanbuild"
                        break
                fi
                done
else
        echo "Wrong number of arguments. Use build|cleanbuild with subsystem to build"
fi