portcheck

#!/bin/bash
# stdin에서 IP PORT 형식으로 입력 받아서 해당 서버에 접속가능한지 확인해줌.
check() {
    echo -n "$1:$2 "
    # timeout -k 5 5
    nc -z -w 5 $1 $2 &> /dev/null \
       && echo -e '\e[32msucccess\e[0m' \
       || echo -e '\e[31mfail\e[0m'
}

# IFS=$'\n'
while read entry; do
  if [[ ${entry:=\#} = \#* ]]; then
    echo $entry
    continue
  fi

  temp=($entry)
  IP="${temp[0]}"
  PORT="${temp[1]}"
  check $IP $PORT
done