UNIX Command Line

This is how we can automate a ftp session in BASH without taking the help of expect.
As ftp provides "quote" option to send username and password, we can use that to send the same.

# FTP function to get a file from REMOTE host
f_GET_FTP(){
local HOST=$1
local USER=$2
local PASSWD=$3

ftp -n $HOST > $TEMPDIR/ftpsh.worked.$$ 2> $TEMPDIR/ftpsh.failed.$$ << EOF
quote USER $USER
quote PASS $PASSWD
cd $DESTDIR
bin
get $4
quit
EOF }

#Calling the function
f_GET_FTP 172.23.0.12 user5 passuser5 input.out