What does the -l in ksh -l do?

Question

If I use the command:

ksh -l

Does it call the file profile.ksh? And what does the -l option do?

Answer 1

ksh is a command interpreter intended for both interactive and shell script use. Its command language is a superset of the sh shell language.

-l 

Login shell. If the basename the shell is called with (i.e. argv[0]) starts with ‘-’ or if this option is used, the shell is assumed to be a login shell and the shell reads and executes the contents of /etc/profile and $HOME/.profile if they exist and are readable.^ksh-OpenBSD

See also ksh-Linux man page