Parallelize many curl requests and return OK or not

check_redir.sh

#!/bin/bash

set -x -e

expectedCode=200
log_file="/tmp/$(basename $0).log"
input_links="${HOME}/Documents/redirections.url.txt"

mycurl(){
  redirection="$1"
  [[ "$( curl -s --location -o /dev/null -w "%{http_code}" "${redirection}" )" -ne "${expectedCode}" ]]
}

export -f mycurl

[[ ! $( which parallel ) ]] && exit 1
[[ ! -f ${input_links} ]] && exit 1

parallel --jobs 16 --halt soon,success=90% mycurl < ${input_links} > ${log_file} 2>&1

if [ $? != 0 ]
  then #Exiting with error
    echo 1
  else #Exiting normally
    echo 0
fi