while read skips the last machine if machines.txt has no empty line at the end

[Justin-De-Sio]

Hi,

When running:

while read IP FQDN HOST SUBNET; do
  ssh -n root@${IP} hostname
done < machines.txt

I expected this output:

server
node-0
node-1

But I only got:

server
node-0

Cause: machines.txt had no blank line at the end. The read command skips the last line if it doesn’t end with a newline (\n).

Fix: Add an empty line after the last entry in machines.txt.

Example:

XXX.XXX.XXX.XXX server.kubernetes.local server
XXX.XXX.XXX.XXX node-0.kubernetes.local node-0 10.200.0.0/24
XXX.XXX.XXX.XXX node-1.kubernetes.local node-1 10.200.1.0/24

I'm not sure what is the best solution to avoid confusion here. Maybe include a note in the tutorial about ending the file with a new line or just rework the bash script.

[ketanjani21]

Submitted PR #895 with documentation update.