This reminds me of the time I was telnet'd (since SSH wasn't a thing at the time) into a remote SunOS/Solaris server. At the time my only Unix experience was with Linux.
"killall -9 httpd" gave an unhelpful error message. "killall httpd" also gave an unhelpful error message. "killall", which would give you usage instructions in Linux, killed all processes on the system. Reading this article makes me figure that killall was likely a frontend to kill(-1, ...).
That day I learned a valuable lesson about reading man pages and understanding that not all unixes are the same.
That's funny... I almost always try "command --help" first if I'm not sure. Of course some may point out "man command" but I always find man painful, and revert to google.
"killall -9 httpd" gave an unhelpful error message. "killall httpd" also gave an unhelpful error message. "killall", which would give you usage instructions in Linux, killed all processes on the system. Reading this article makes me figure that killall was likely a frontend to kill(-1, ...).
That day I learned a valuable lesson about reading man pages and understanding that not all unixes are the same.