The basic difference between require and require_once is require_once will check whether the file is already included or not if it is already included then it won't include the file whereas the require function will include the file irrespective of whether file is already included or not. So ...
Worse, most filesystem types (ext4/3/2, XFS, Btrfs, NTFS) even allocate clusters of 4k at a time, so files keep growing 4k, 8k,12k etc. . So there is always some extent of difference between the sum of all the byte sizes of files and the sum of the blocks that are actually all...
What is the difference between rhel 6 and rhel7 difference|rhel 6|RHEL 7 | | release date |10 NOV 2010|asdasd OS boot time|40 sec|20 sec Maximum size
and it’s mandatory for GPT partition tables. Thefs-typeparameter is optional. If we fill it, we replace it withfat16, fat32,xfs,ext2,ext3,ext4,Linux-swap,NTFS, orreiserfs.