rtcwake : Wake up your system after given time.

Waking up the pc is the common need of every moderate users. In that case rtcwake is a useful utility for you. Using this utility you can wake up your linux box at any given time. So, why do we need to wake up the poor soul. Because of the following reasons:

• System clean-up when you are busy sleeping after exploiting the pc for a whole day.
• Routine System backup when you are busy attending other emergencies. 
• Running a cron job like buzzing a song to wake you up. 

The usage can be endless. To install this program. Execute commands below.

sudo apt-get install rtcwake
sudo chmod u+s /usr/sbin/rtcwake

An example of the rtcwake command can be

rtcwake -m mem -s 300

Best backup tools in Linux.

Data lose is one of the major fears of the users.Disk failures & accidents are the common cause of data lose which can occur at any time, so it's really important to keep track of our data regularly.
Backup tools comes with various features:
-enable you to identify important files and directories that are then constantly monitored and regularly backed up.
-perform incremental backups, which – after making a complete initial imprint of the directory – will then only make copies of new files or those that have changed since the last backup inorder to tackle redundancy.
-compress your data so you can store it more efficiently.
-tools that will encrypt your data when making copies.
-GUI and command line flavours