exec

Execute a command without creating a child process. More information: https://www.gnu.org/software/bash/manual/bash.html#index-exec.

• Execute a specific command:

exec command -with -flags

• Execute a command with a (mostly) empty environment:

exec -c command -with -flags

• Execute a command as a login shell:

exec -l command -with -flags

• Execute a command with a different name:

exec -a name command -with -flags