Makaba autobump (bash-written)

# ======== Copy both scripts to ~/bin ========
# ======== autobump.sh ========
# === Usage: ./autobump.sh bumps ===
# === Effect: bumps the thread $bumps times ===
#!/bin/bash
antigate_key=5654233d49951a7cd2c5be2b7f0b12c0
cd ~/bin
if [ ! -d ./2ch-data ]; then
  mkdir 2ch-data
fi
cd 2ch-data
i=1
while ((i <= $1)); do
  curl -q --silent -X POST "https://2ch.hk/makaba/captcha.fcgi?type=2chaptcha" \
  | tail -n 1 > captcha-id # Got captcha ID
  curl -q --silent -X POST "https://2ch.hk/makaba/captcha.fcgi?type=2chaptcha&action=image&id=$(cat captcha-id)" \
  > captcha.png # Got captcha pic
  antigatecaptcha $antigate_key captcha.png 10 # Solved captcha
  captcha_solved=$(cat captcha-answer)
  # Posting:
  if [[ ! $(curl -q --silent -X POST -F "json=1" -F "task=post" -F "board=s" -F "thread=1739561" -F "email=sage" -F "name=bash-autobump" -F "comment=test" -F "captcha_type=2chaptcha" -F "2chaptcha_id=`cat captcha-id`" -F "2chaptcha_value=$captcha_solved" "https://2ch.hk/makaba/posting.fcgi" | grep "Капча невалидна.") ]]
  then
    echo '2ch-autobump:' "$i / $1 posts."
    let 'i = i + 1'
  else
    echo '2ch-autobump:' "Posting error: invalid captcha."
  fi
  rm captcha-id captcha-answer
done
# ======== End of autobump.sh ========

# ======== antigatecaptcha.sh ========
# === Source: https://github.com/persona5/bgg/antigatecaptcha.sh ===
# === Modifications: ===
#     - Changed answer-getting cycle from 'while' to 'for'
#     - Added answer-getting attempts parameter
#     - Changed answer output method: printing to stdout -> printing to file
# === Usage: ./antigatecaptcha.sh antigate-key captcha-file get-answer-attempts
# === Effect: requests captcha answer at antigate.com and prints it to 'captcha-answer' file ===
#!/bin/bash

antigatekey=$1
filename=$2
iterations=$3
answer_file="captcha-answer"

antigate=$(curl -q --silent --user-agent "$useragent"  -i -X POST -H "Content-Type: multipart/form-data" -F "method=post" -F "key=$antigatekey" -F "numeric=1" -F "file=@$filename;" "http://anti-captcha.com/in.php")

if [[ $(echo "$antigate" | grep "ERROR") ]];then
  exit 1
else
  antigatecaptchaid=$(echo "$antigate" | awk {'print$1'} | tail -c 10)
fi

for i in $(seq $iterations); do
  sleep 10
  captchastatus=$(curl --silent -q --user-agent "$useragent" "http://anti-captcha.com/res.php?key=$antigatekey&action=get&id=$antigatecaptchaid")
  if [[ $(echo "$captchastatus" | grep 'OK|') ]]; then
    break
  fi
done

captchaanswer=$(echo "$captchastatus" | sed -e 's/OK|//g')
rm captcha.png
echo $captchaanswer>$answer_file
exit 0
======== End of antigatecaptcha.sh ========