meaning of dd if=/dev/zero of=abc bs=1024 count=1000

atikna2001 · 03-11-2009, 12:32 PM

hi,
can someone here tell me what the following commands do?
dd if=/dev/zero of=abc bs=1024 count=1000
mkdosfs abc
mount -o loop abc /mnt/floppy

AuroraCA · 03-11-2009, 12:48 PM

The manual pages for Linux explain all commands and options. You can find the manual pages for specific pages in Linux with the comand:

man [command]

for example:

Code:

man dd

Code:

man mkdosfs

Code:

man mount

You can also type "man dd", "man mkdosfs" or "man mount" into Google.

tux99 · 03-11-2009, 12:48 PM

Quote:

dd if=/dev/zero of=abc bs=1024 count=1000

writes 1000 blocks of 1024 bytes length (= 1024000 bytes in total, approx. 1Mbyte) of binary zeros into the file 'abc'.

Quote:

mkdosfs abc

creates a MS-DOS filesystem (FAT) on the file 'abc' (using it like a disk image)

Quote:

mount -o loop abc /mnt/floppy

mounts the file 'abc' using the loop device as if it was a disk on the mount point /mnt/floppy.