Running local script over ssh with user input

Question

How does user input work for running local scripts remotely?

My script uses $1 for user input.

The remote machine names vary, so I wrote a script(main_script.sh), which also uses $1 to read the name of the remote machine.

Ex:

./main_script.sh remote3 lcl_script.sh <user_in>

But user input is not recognized. remote3 is the name of the remote machine

Main script:

ssh root@$1 'bash -s' < $2

where, $1 is for machine name. $2 is for the local script.

Local script:

printf "new setting:"
echo $1

where $1 is the user_in

Please post your scripts.

Barmar
– Barmar

2021-03-30 06:18:00 +00:00
Commented Mar 30, 2021 at 6:18 — Barmar
– Barmar, Commented Mar 30, 2021 at 6:18

irnerd · Accepted Answer · 2021-03-31 05:28:04Z

0

wrap the script name and user_in in quotes

./main_script.sh remote3 "~/lcl_script.sh <user_in>"

This question is source of answer

Passing variables in remote ssh command

edited Mar 31, 2021 at 5:28

answered Mar 30, 2021 at 9:24

irnerd

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6 Comments

hithesh Over a year ago

I tried putting in quote, but still didn't work.

irnerd Over a year ago

Qualify the full path of the remote script? - eg. : ./main_script.sh remote3 "~/lcl_script.sh <user_in>"

irnerd Over a year ago

Presumably the ssh keys and known_hosts are configured and logging into remote server occurs successfully without needing to enter the password?

hithesh Over a year ago

Correct, no need to enter password.

irnerd Over a year ago

Are you able to elaborate on what you define as "But user input is not recognized" - what does stdout display (and maybe stderr)?

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hithesh · Accepted Answer · 2021-04-04 02:27:19Z

0

I figured it out.
To make sure the user input is read, I had to add $3 (for user input) in the main script,
Main script is:

ssh root@$1 'bash -s' < $2 $3

I didn't have to change anything in the local script.
@irnerd, thanks for helping out.

answered Apr 4, 2021 at 2:27

hithesh

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