[SOLVED] Promoting the user for $1 input

keif · 08-30-2013, 09:39 AM

Good morning everyone,

I want to run a simple grep script on a remote server.

Instead of having the user type the script and then the hostname, I would like them to be prompted to type the hostname, and then use the input they typed for $1.

The example below is called grep-error.sh

Code:

#!/bin/sh

ssh root@$1 grep -i error vision.error

As it is now, in order to execute this they will have type:

Code:

./grep-error.sh hostname

Instead of doing that, I would like to set it up so after they type the script into the command prompt, it asks them for a hostname:

Code:

./grep-error.sh
Please enter a hostname:

Then I want the hostname to be passed along to $1.

Any help is appreciated. Thanks.

druuna · 08-30-2013, 09:47 AM

You can use read to do this.

Simple example:

Code:

#!/bin/bash

echo -n "Please enter a hostname: "
read HOSTNAME

echo $HOSTNAME

There's no need for $1 (at least for the hostname part).

Have a look at the bash manual page (SHELL BUILTIN COMMANDS section, read).

EDIT: Example 15-3. Variable assignment, using read

keif · 08-31-2013, 02:43 PM

Quote:

Originally Posted by druuna

You can use read to do this.

Simple example:

Code:

#!/bin/bash

echo -n "Please enter a hostname: "
read HOSTNAME

echo $HOSTNAME

There's no need for $1 (at least for the hostname part).

Have a look at the bash manual page (SHELL BUILTIN COMMANDS section, read).

EDIT: Example 15-3. Variable assignment, using read

Thanks. Worked great.