# If sftp is not in your path replace with absolute path of sftp program
my $COMMAND = 'sftp';
my $FTP_PARAMS = ("$SFTP_USER\@$SFTP_ADDRESS");
 
# Create the Expect object
my $exp = Expect->spawn($COMMAND, $FTP_PARAMS) or die "Cannot spawn sftp command \n";
 
# If this is the first time you are running this , expect will send "yes" to add the key
# for the sftp server to the ~/.ssh/known_hosts file else
# wait for "Password Authentication" string to show up
$exp->expect($TIMEOUT,
	["Password Authentication"],
	["Are you sure you want to continue connecting", sub {my $self = shift; $self->send("yes\n");}]
	);
 
# Wait for Password prompt to show up 
$exp->expect($TIMEOUT, ["Password:"]);
 
# Sent the sftp password 
$exp->send("$SFTP_PASSWORD\n");
 
# Wait for sftp prompt
$exp->expect($TIMEOUT, ["sftp>"]);
 
if (lc($FUNCTION) eq "get" )
{
 # Get yesterday's report file/s and put it in reportsPath directory on the local machine
 $exp->send("get $FILE_NAME $WORKING_DIRECTORY\n");
}
else
 {
  # Get yesterday's report file/s and put it in reportsPath directory on the local machine
  $exp->send("put $FILE_NAME $WORKING_DIRECTORY\n");
 }
 
# Wait for sftp prompt
$exp->expect($TIMEOUT, ["sftp>"]);
 
# Close ftp session
$exp->send("bye\n");
 
# Destroy the expect object
$exp->soft_close();

}