How can i create a script that will ssh a device and type some commands?

UNIX for Beginners Q & A
1

Hi Guys,
this is the scenario:
ubuntu pc and I have 10 wireless devices that I need to check their firmware version.
I would like to create a script that it will ask me IP, after I enter it, I hit enter then it will show me the version of the firmware.

this is what i do.

ssh admin@10.0.0.10
admin
admin
show device

The wireless box I use it is not a linux box it has it's commands.

thank you in advance for your help

2

I don't understand that script, particularly the 'admin' 'admin' part. Are you ssh-ing into a shell or not?

3

I am using open ssh for windows.

here it is manual example of what i have to type in order to get the info i need

C:\Users\Gabriel\Desktop\test>ssh admin@192.168.0.5
      0 [main] ssh 12156 find_fast_cwd: WARNING: Couldn't compute FAST_CWD pointer.  Please report this problem to
the public mailing list cygwin@cygwin.com
admin@192.168.0.5's password:

admin connected from 192.168.10.23 using ssh on BreezeWAY
BreezeWay2020> show device
device general product-type COMPACT
device general product-subtype EPC
device general compact-model-type BreezeWAY2020L
device inventory hw-ver 000-03-00
device inventory main-sw-ver 0606.001729
device inventory backup-sw-ver 0606.001607
device inventory running-sw MainSW
device inventory boot-ver 2014.07.00077
device inventory up-time 1970-01-01T00:00:00-00:00
[ok][1970-01-12 23:51:42]
BreezeWay2020>
*** IDLE TIMEOUT ***
Connection to 192.168.0.5 closed.

C:\Users\Gabriel\Desktop\test>
4

So, not a shell.

Can you tell me if this works?

ssh admin@192.168.0.5 "SHOW DEVICE"

It should still ask you for a password.

I know it's not what you want, I'm still exploring what we're dealing with here.

5

Do you have any file access to these wireless devices?

6

I just tried what you said and it never got the prompt to keep typing
I have to press CTRL+C to abort

---------- Post updated at 12:38 PM ---------- Previous update was at 12:36 PM ----------

that is all the access customer have to this kind of devices

7

That is unfortunate. With no way to copy SSH keys to these devices, you'll have to use something like the expect brute-forcing tool to automate them.

8

Do you really need to use ssh ? Some of those devices also accept telnet , and it seems to be used on LAN only.

9

it kinda works like that but it wont let me to add any other command later
sshpass -padmin ssh -o StrictHostKeyChecking=no user@10.0.0.10

10

sshpass is very insecure, but given there's no way to use keys there's no securer alternatives.

sshpass -padmin ssh -o StrictHostKeyChecking=no user@10.0.0.10 <<EOF
command
EOF

Do not indent the ending EOF.