pi@rpizero:~ $ touch hello

newuser@rpizero:~ $ ll ../pi/
.ansible/      .bash_history  .bash_logout   .bashrc        hello          .profile
newuser@rpizero:~ $ rm ../pi/hello
rm: remove write-protected regular empty file '../pi/hello'?
newuser@rpizero:~ $ ll ../pi
-bash: ll: command not found