bash将所有文件合并到一个特定目录中

Question

我正在尝试将gjb2菜单中同名$ {id} .txt的所有文件合并到一个文件（out.txt）中并遇到问题：

 gjb2() {
printf "\n\n"
printf "What is the id of the patient getting GJB2 analysis  : "; read id
printf "Enter variant(s): "; IFS="," read -a variant

    [ -z "$id" ] && printf "\n No ID supplied. Leaving match function." && sleep 2 && return
    [ "$id" = "end" ] && printf "\n Leaving match function." && sleep 2 && return

    for ((i=0; i<${#variant[@]}; i++))
          do printf "NM_004004.5:%s\n" ${variant[$i]} >> c:/Users/cmccabe/Desktop/Python27/$id.txt
    done
add2text ${id}.txt
add2out
gjb2name
}

要合并的命令：

add2out() {
cd 'C:\Users\cmccabe\Desktop\annovar'
printf "NM_004004.5:%s\n" ${variant[$i]} > C:/Users/cmccabe/Desktop/annovar/out.txt >> out.txt
}

谢谢你:)。