Tip : Shutting down your system automatically

Welcome again,
this post I've a tip for you, it is how to shut down your system automatically, such operation required a tool in the past when I was operating windows, but now, you can do it without any additional tools, just your system :)

the command is shutdown, and here is the syntax

shutdown -P [time]

this command require root access on the system, and very flexible too, you can use it in many diffrent ways,

here are some examples of using the command:

shutdown -P now
this command will shutdown the system immediately

shutdown -P 10:23
this will shutdown the system on 10:23 AM

shutdown -P 22:23
this will shutdown the system on 10:23 PM

shutdown -P +15
this will shutdown the system after 15 minutes

the command has lot of options you can test it,

that's all for the moment

YUM segmentation fault in fedora 10 >>> It's Fix

the Problem

While I was updating my fedora 10. I accidentally restarted my PC.
after restating the PC. I tried to update the packages by package managers it takes too long.
I used the # yum update  command it give me the error message "Segmentation fault" and aborts.

I searched for the solution and found this one.

the reason

this error is a result of a corruption in RPM Database Files located int /var/lib/rpm/
 
how i fixed it

by executing the following commands ( while I'm root )

# rm -f /var/lib/rpm/__db*
# rpm --rebuilddb

It worked for me hope it works for you too ;)

more details about this problem and RPM DB Recovery

RPM DB Recovery in Details (RHEL 3 )

Working With the RPM Database (Fedora)

How to "repair" /var/lib/rpm/Packages

the solution posted here was found in the following link
yum Segmentation fault

yum basics

The main syntax is :
yum [options] [command] [package ...]

To use yum, become root, and then you can use the following commands:

To see a list of available software:
yum list available

To install some software, you type:
yum install packagename

To update some software, you type:
yum update packagename

NOTE :If you leave out "packagename" yum will update all your software.

To see what updates are available, you can do:
yum check-update

To search for a package, you can do:
yum search word

To remove package already installed, you type:
yum remove packagename
or yum erase packagename

To list information about available packages or spsific Package.
yum list packagename
or yum list packagename*
or yum list word*


[OPTIONS]

-h, --help
Help; display a help message and then quit.

-y
Assume yes; assume that the answer to any question which would be asked is yes.
Configuration Option: assume-yes

-q, --quiet
Run without output. Note that you likely also want to use -y.

-v, --verbose
Run with a lot of debugging output.

--
Thanks
Your's Sincerely
Mohamed Nasr

netBeans 6.0 Released

NetBeans - The Only IDE You Need

The much awaited netBeans 6.0 has been released and can be downloaded from
http://download.netbeans.org/netbeans/6.0/final/
Aand U can read about the new feature here