Shell Programming and Scripting

#!/bin/bash
ip_addr=10.10.10.10
user=root
passwd=Help
filename=/root/test
expect -c "
spawn ssh -n -T -o NumberOfPasswordPrompts=3 -o StrictHostKeyChecking=no $user@$ip_addr
expect \"*?assword:*\"
send -- \"$passwd\r\"
expect {
\"ls $filename\" { exp_continue }
$filename { puts found }
timeout { puts \"timed out\" }
}
"

spawn ssh ..... "ls $filename"

ssh hostname ls $file
if [ $? -ne 0 ]; then
  echo "handle missing file here"
fi

#/bin/bash

ip_addr=10.10.10.10.
user=root
passwd=Help
filename=test_backup.sh
path=/root/


VAR=$(expect -c "
                    spawn ssh -n -T -o NumberOfPasswordPrompts=3 -o StrictHostKeyChecking=no $user@$ip_addr \"ls $path/$filename\"
                    expect \"*?assword:*\"
                    send -- \"$passwd\r\"
                    expect {
                        \"$path/$filename\" {
                        exit 0
                        }
                        \"ls: $path/$filename: No such file or directory\" {
                        exit 1
                        }
                    }
                    expect eof
                    ")
                echo "$VAR" | grep -q -e "No such file"
                if [ $? -eq 0 ];then
                VAR=$(expect -c 2> /dev/null "
                        spawn scp -q -o NumberOfPasswordPrompts=3 -o StrictHostKeyChecking=no $path/$filename $user@$ip_addr:$path
                        expect \"*?assword:*\"
                        send -- \"$passwd\r\"
                        send -- \"\r\"
                        expect eof
                        ")
                else
                    echo "$filename already exists at ip address $ip_addr at path $path"
                fi