for builtin security see for example https://unix.stackexchange.com/questions/102746/how-to-invoke-a-shell-built-in-explicitly https://unix.stackexchange.com/qu

for builtin security see for example https://unix.stackexchange.com/questions/102746/how-to-invoke-a-shell-built-in-explicitly https://unix.stackexchange.com/questions/102746/how-to-invok...