that require rcs command execution instead system(3) to avoid malicious
filenames in patches causing bad things to happen. In the process, lose SCCS
support. It is not like we are shipping sccs commands for that to work.
calendars to be other than regular files unless the -x option is in
effect.
(If not in -a mode, we're running purely as the user whose calendar it
is and if they want to DoS themselves with named pipes it's their own
lookout.)
from /etc/daily); do not exec other programs while the real uid is
still 0.
Also, clear the supplementary groups list up front and call initgroups
when becoming another user, to avoid leaking any extra group
privileges that we might have.
And finally, don't silently ignore errors changing uid and gid; those
are serious if they happen.
a couple of very important executives on board. He was coming into
the Berkeley airport through thick fog with less than 10 miles
visibility when his instruments went out.
He began circling around looking for a landmark. Finally, a small
opening in the fog appears and he sees a tall building with a guy
working alone on the fifth floor. He banks the plane around, rolls
down the window and shouts to the guy, "Hey where am I?"
The man replies, "You're in an airplane." The pilot rolls up the
window, executes a 275 degree turn and proceeds to perform a
perfect blind landing on the airport runway 5 miles away. Just as
the plane stops, so does the engine as the fuel has run out.
The passengers are amazed and one asks how he did it.
"Quite easy," replies the pilot, "I asked the guy in that building
a simple question. The answer he gave me was 100 percent correct
but absolutely useless, therefore, that must be NetBSD's
support office and from there the airport is just five miles due
East." (Credits:
http://www.techsupportforum.com/forums/f289/microsoft-joke-404432.html)
Seriously: give the reader of the manpage an idea on what this program
is for without forcing them to Google or read another manpage.
- space and tab are no shell metachars, remove them from generic
metachar function
- add space and tab as to-be-quoted characters for :Q modifier
- add = and : as characters that require command handling by the shell
christos