try:
   ssh = paramiko.SSHClient()
   ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
   ssh.connect(server, port=22, username='user', password='pass')
   channel = ssh.invoke_shell()

except paramiko.AuthenticationException:
    print("Authentication failed, please verify your credentials: %s")
except paramiko.SSHException as sshException:
    print("Unable to establish SSH connection: %s" % sshException)
except paramiko.BadHostKeyException as badHostKeyException:
    print("Unable to verify server's host key: %s" % badHostKeyException)
except Exception as e:
    print(e.args)

#array of commands
command = ['command1','command2','command3','command4','command5','command6','command7']
progress["value"] = 0
progress["maximum"] = len(command)
i=0
for commands in command:
    if i == 6:
        channel.send(command[i]+'n')#display command and press enter
        print("**Backup started**")
        while not channel.recv_ready():#Wait for the server to read and respond
            time.sleep(10)
        time.sleep(240)
        print("**Backup completed**")
        output2 = channel.recv(9999)
        print(output2.decode('utf-8'))
        bytess += 1
        progress["value"] = bytess
        txtOutput.insert(END,output2)
        txtOutput.update_idletasks()#update the output one line at time
        progress.update_idletasks()
    else:
         channel.send(command[i] + 'n')
         print(commands + "command has started**")#display command and press enter
         while not channel.recv_ready(): #Wait for the server to read and respond
            time.sleep(3)
         time.sleep(1)
         print(commands + "command has ended**")#wait enough for writing to (hopefully) be finished
         output = channel.recv(9999) #read in
         print(output.decode('utf-8'))
         time.sleep(0.2)
         bytess += 1
         progress["value"] = bytess
         txtOutput.insert(END,output.decode('utf-8'))
         txtOutput.update_idletasks()#update the output one line at time
         progress.update_idletasks()

    i+=1

print("Completed we will now close connection!!")
ssh.close()