New To Perl :- Help with "rename" and "File locking"

[Hugz]

Hello,
And Thank you for taking time to help me.Myself Hugz.I am new to
perl and want to write my own Scripts.But i can't understand how perl
"rename" function and "file locking" works.

Actually i am running a WinME with ActivePerl 5.8.0, what i want to
know is

1.What do you mean by "file creation (and deletion) is not atomic over
NFS" ?
2.What is NFS?
3.How do lock a File under Windows/Unix/Linux ?
4.How do you rename a file reliably on Windows/Unix/Linux ?
5.Why can't i use the following code to lock files ?

sleep(3) while -e "file.lock"; # PLEASE DO NOT USE
open(LCK, "> file.lock"); # THIS BROKEN CODE

Please help me in any possible way.

Thank You.

 

[Harmit Jhajj]

This is Hugz Again.Please someone help me with my questions above !!!!!

 

[Jürgen Exner]

This is Hugz Again.

I thought your name is Harmit?

Please someone help me with my questions above

Which question? Those in the subject line? Did you try the documentation?

perldoc -f rename
perldoc -q lock

jue

 

[Harmit Jhajj]

I thought your name is Harmit?

Hello jue,
Yes my name is Harmit,but Hugz is my alias.Actually the
questions are in the the first post that i posted in this thread.

Which question? Those in the subject line? Did you try the documentation?

perldoc -f rename
perldoc -q lock

Yes i tried the perldocs and know how to lock and rename file but i am
a bit confused please refer to my first post and help me !!!!

Thank you.

Harmit.