Difference between the rm and shred in linux
 

I am new to linx.Please provide me clear differnce.
"Difference between the shred and rm in linux"

Rm just calls unlink which "deletes the file" but doesn't actually do anything to the data on disk, it just frees the inode. Shred continually overwrites the file data and then optionally deletes it. Shreds purpose is to protect against somebody being able to recover your data.

For more info:

man shred
man rm