写起来也不算很复杂就是了~

-user <用户名> 登录
-getnew 获取地址
-file <filename> 指定文件上传
按步骤进行，登陆过可直接获取，cookie可能会过期

#!/bin/sh

while [[ $1 != "" ]]; do
  case $1 in
    -user)
      user=$2
      shift 2
    ;;
    -file)
      file=$2
      shift 2
    ;;
    -silent)
      silent=" -s"
      shift 1
    ;;
    -getnew)
      getnew="true"
      shift 1
    ;;
    -h|--help)
      echo "BiliBili Uploader in shell
  by lcz970

-h --help
  输出本帮助信息

-user <userid> 
  登录模式，指定用户名，密码将在执行时询问，用于获取cookie

-getnew
  获取地址，获取后写入文件方可开始上传，需要cookie正常获取

-file <path/to/file>
  上传模式，读取给定的文件并上传，需要存在可用的上传地址
-silent
  静默上传，不输出curl信息，只显示切片字节"
      exit
    ;;
    *)
      echo "未知参数 $1"
      exit
    ;;
  esac
done

if [[ $user != "" ]]; then
  echo "登陆用户 $user"
  read -s -p "输入密码 " pwd
  if [[ $pwd == "" ]]; then echo "密码为空"; exit; fi
  echo -e "\n登陆中..."
  return=$(curl -s --data "userid=$user&pwd=$pwd" "https://passport.bilibili.com/ajax/miniLogin/login" -c /tmp/bili_cookie)
  if [[ $return != ${return#*status\"\:true} ]]; then echo "登陆成功"; else echo "登陆失败"; echo $return; fi
  exit
fi

if [[ $getnew == "true" ]]; then
  echo "获取新上传地址"
  return=$(curl -s "http://member.bilibili.com/get_vupload_url" -b /tmp/bili_cookie)
  if [[ $return == ${return#*url\"\:} ]]; then echo "获取失败"; echo $return; else
    url=${return#*url\"\:\"}
    until [[ "$url" == "${url%\"*}" ]]; do url="${url%\"*}"; done
    filename=${return#*file_name\"\:\"}
    until [[ "$filename" == "${filename%\"*}" ]]; do filename="${filename%\"*}"; done
    echo -e "上传服务器：${url:7:5}\n上传文件名 $filename\n地址已保存"
    echo -n $url >/tmp/bili_upload_url
  fi
  exit
fi

if [[ $file == "" ]]; then
  echo "上传必需参数不足，-h查看帮助"
  exit
fi

if [[ ! -f $file ]]; then
  echo "文件不存在"
  exit
fi

if [[ ! -f /tmp/bili_upload_url ]]; then
  echo "上传地址不存在，请使用-getnew获取"
  exit
fi

url=$(</tmp/bili_upload_url)
filename=${url#*filename=}; until [[ "$filename" == "${filename%&*}" ]]; do filename="${filename%&*}"; done
hash=${url#*hash=}; until [[ "$hash" == "${hash%&*}" ]]; do hash="${hash%&*}"; done
uploadFile=$file; until [[ "$uploadFile" == "${uploadFile#*/}" ]]; do uploadFile="${uploadFile#*/}"; done

echo "上传服务器：${url:7:5}
上传vid： $filename
上传文件：$uploadFile"

size=$(ls -l "$file")
size=${size#* * * * }
until [[ "$size" == "${size% *}" ]]; do size="${size% *}"; done
let start=0 sizeR=size-1
let M=size/1024/1024 "K=(size-M*1024*1024)/1024*100/1024"; if (( $K < 10 )); then K=0$K; fi; sizeh=$M.$K

while (( $start < $size )); do
  let block=512*1024 end=start+block-1
  if (( $end >= $sizeR )); then
    let end=sizeR block=end-start+1
  fi
  let M=start/1024/1024 "K=(start-M*1024*1024)/1024*100/1024"; if (( $K < 10 )); then K=0$K; fi; starth=$M.$K
  let M=end/1024/1024 "K=(end-M*1024*1024)/1024*100/1024"; if (( $K < 10 )); then K=0$K; fi; endh=$M.$K
  let "percent=start/(size/10000)" percentI=percent/100 "percentD=percent-(percentI*100)"
  if (( $percentI < 10 )); then percentI=0$percentI; fi
  if (( $percentD < 10 )); then percentD=0$percentD; fi
  echo "上传分片 ${starth}M-${endh}M/${sizeh}M($start-$end/$size) $percentI.$percentD%"
  dd "if=$file" of=/tmp/part.flv skip=$start bs=$block count=1 iflag=skip_bytes status=none
  return=
  return=$(curl "$url" -A "Mozilla/5.0 (Windows NT 6.1; rv:35.0) Gecko/20100101 Firefox/43.0.4" -H "Content-Range: bytes $start-$end/$size" -H "Content-Disposition: attachment" -F "files[]=@/tmp/part.flv;type=video/x-flv;filename=\"$uploadFile\""$silent)
  if [[ $silent == "" ]]; then echo; fi
  if [[ $return == "-1" ]]; then echo "无效地址"; exit; fi
  if [[ "$return" == "${return#*size\"\:}" ]]; then
    echo "上传出错，重新尝试"
  else
    current=${return#*size\"\:}
    until [[ "$current" == "${current%,*}" ]]; do current="${current%,*}"; done
    start=$current
  fi
  rm -rf /tmp/part.flv
done

echo "完成
投稿代码：
[vupload]$filename;$uploadFile;2;[/vupload]#p#这里填分P标题#e#"
echo -e "[vupload]$filename;$uploadFile;2;[/vupload]#p#这里填分P标题#e#\r" >>~/bili_upload_history.txt