some shell questions
 

1.[ -f /var/lock/subsys/postfix ] && restart || :
what does : mean
2. . /etc/rc.d/init.d/functions
what does this shell mean
3. echo $"Usage: $0 {start|stop|restart|reload|abort|flush|check|status|condrestart}"
what does $ in echo $"..." mean
4.what does difference between exit 0 and exit 1
5. what does $*　　$# 　$? mean in shell

Hi,

This has 'homework' written all over it and we at LQ do not do your homework.......

(almost) All the answers can be found in bash' man page.

Hope this helps.

other answer?
thank you

I'm afraid you will get always the same answer. Try to figure out your homework alone or ask to teacher or colleagues. That's it!

Thread closed because this appears to be homework.