Batch the files in the directory

#!/bin/bash
#sourceFolder = /home/bigdatagfts/pl62716/refdata
#targetFolder = /home/bigdatagfts/pl62716/refdata_target
sourceFolder=$1
targetFolder=$2
if [ $# != 2 ] ; then 
    echo "USAGE: $0 sourceFolder hdfsFolder" 
    echo " e.g.: $0 /home/bigdatagfts/pl62716/refdata /home/bigdatagfts/pl62716/refdata_target" 
    exit 1; 
fi
if [ ! -d "$sourceFolder" ];then
    echo "$sourceFolder is not exist, please check!"
    exit 1;
else
    if [ ! -d "$targetFolder" ];then
        echo "$targetFolder is not exist! create $targetFolder !"
        mkdir -p "$targetFolder"
        
    fi
fi
echo "delete lines which begin with H/T and store to dir $targetFolder" 
cd $sourceFolder
for file in `ls`
    do
        if test -f $file
        then 
            if [ -f "$targetFolder/$file" ]; then 
                rm $targetFolder/$file
            fi
            sed '/^H|^T/'d $file | cat -n > $targetFolder/$file
        fi
    done