about /dev/null and also backup utility
Dear Friends ,
I have the following two queries : 1) what is the function of "/dev/null" in Linux . Which information contain this partition in Linux ? The same quetion also about '/dev/sda' or '/dev/sdb' ? 2) How can I measure which partition take space or allocate for the USB devices , /dev/sda1 or /dev/sdb1 ? I m confused about this 3)If i want to take whole backup of the Linux server , then is there any third party tool for this purpose ? For example , in windows platform I can say , for whole backup , a third party tool 'GHOST' is used for this purpose . Similarly is there any tools like this for Linux ? |
Your questions are unfortunately not very clear....
/dev/null is not a partition---it is a special device which can be thought of as "write only". Anything sent there is never seen again. Quote:
Things like /dev/sda are not partitions, they are devices. In /dev you will find both character and block devices--If you do ls -l in /dev, you will see the difference in the first letter. A USB device would not typically show up as /dev/sda1, etc. The dd command is the low-level equivalent of ghost. |
Quoth pixellany:
Quote:
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