I have this command

clear; sudo kubectl exec -it $(kubectl get pods | grep 'app' | cut -d ' ' -f 1) ash 

I will land here

/src # 

I want to also run a command ls

/src # ls                                                                                           
Procfile             composer.lock        phpunit.xml          server.php                           
app                  config               public               storage                              
artisan              database             resources            tests                                
benu.code-workspace  heroku.sh            routes               vendor                               
bootstrap            package-lock.json    run.sh               webpack.mix.js                       
composer.json        package.json         scripts                                                   
/src #   

I've tried

clear; sudo kubectl exec -it $(kubectl get pods | grep 'app' | cut -d ' ' -f 1) ash echo "ls"

and

clear; sudo kubectl exec -it $(kubectl get pods | grep 'app' | cut -d ' ' -f 1) echo "ls"

Please correct me