Turning Commands Into a Bash Script

View the man page for the ssh command, and determine the option to use to disable host key checking.

1. Create a bin folder in cloud_user's home directory.

mkdir bin

2. Use Vim to create the file lab.sh in the new bin folder.

vim bin/lab.sh

1. Create the following script.

#!/bin/bash  

login_user=cloud_user
if [ -n $1 ]
then
    ssh -o StrictHostKeyChecking=no $login_user@$1
fi

1. Then, save the file by running.

:wq

1. Save the file, and make it executable.

chmod u+x bin/lab.sh

2. Run the script, passing 10.0.1.10 as the first parameter to be assigned to $1.

./bin/lab.sh 10.0.1.10

1. Press Ctrl + C to exit the password prompt.

1. Append to the .bashrc file in cloud_user's home directory to add the new bin folder to the PATH environment variable.

echo 'PATH="$HOME/bin:$PATH"' >> .bashrc

2. Source .bashrc to pick up the change.

. .bashrc

3. Verify that you can run lab.sh without specifying the path to the script.

lab.sh 10.0.1.10