In ps -ef command in last column that is CMD column shows -ksh. What does this -ksh mean?

Question

In ps -ef command in last column that is CMD column shows -ksh. What does this -ksh mean?

Sample: arw 16107 1 0 Feb 17 pts/0 0:00 -ksh

Answer 1

It probably means korn shell.

https://en.wikipedia.org/wiki/Korn_shell

And the minus in front means, it was invoked as a login shell.

man ksh says: "If the shell is invoked by exec(2), and the first character of argument zero ($0) is -, then the shell is assumed to a login shell and commands are read from /etc/profile and then from either .profile in the current directory or $HOME/.profile, if either file exists.