How to remove unnecessary from the output of a command?

Question

bash

Hey everyone,

the following command prints pods to the screen like this:
$ kubectl get pods -n mainspace

max-reporting-mrc-deployment-384743d45-spjnc 
max-reporting-mrc-deployment-6d9f966cf8-spjnc
npx-daemon-4njjs
npx-daemon-8h6nb

is it possible to process this output somehow with pipe and regex to get the output:

max-reporting-mrc-deployment 
max-reporting-mrc-deployment
npx-daemon
npx-daemon

that is, to remove that part of the line where the numeric characters after the dash begin?

all the best,
Vadim

Answer 1

grep -oP '^[a-z]+(-[a-z]+)*'
grep -oP '^.+?(?=-\d|$)'
sed 's/-[0-9].*//'