SFTP script

Hello Experts,

I was using the script to move the file from my server to external server using "expect" , but my production server is not having the "expect" library present and network team is not allowing to configure it.

My SFTP script was like below:

#!/usr/bin/expect

set timeout -1

if { $argc != 6 } {
    puts "Usage $argv0 host user pass cd lcd file "
    exit 1
}

set host [lindex $argv 0]
set user [lindex $argv 1]
set pass [lindex $argv 2]
set cd [lindex $argv 3]
set lcd [lindex $argv 4]
set file [lindex $argv 5]

spawn sftp -oStrictHostKeyChecking=no -oCheckHostIP=no $user@$host
expect *assword:

send "$pass\r"
expect sftp>

send "cd $cd\r"
expect sftp>

send "lcd $lcd\r"
expect sftp>
send "put $file\r"

send "exit\r"
expect eof

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Which is working perfectly fine. Now I want to make the script with simple bash script without using "expect" as like below:

#!/bin/sh


host="$1"
user="$2"
pass="$3"
cd="$4"
lcd="$5"
file="$6"


sftp -b ${user}@${host}
${pass} << EOF

cd ${cd}
lcd ${lcd} 
put ${file}
EOF
echo "end sftp"
exit

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But this script still ask me the password . Can anyone please help in solving this issue.