It's a zero byte file, but it's not greyed out. al window's response was: No such file (and then it quoted back to me the file and directory structure to it).The environment variable BLOCKSIZE overrides the unit size of 512 bytes al, a total sum for all the file sizes is output on a line before the listing.al command line, issue the following syntax to see the size of a directory: du -sh /directory/pat.macos - Show human-readable file sizes in OSX terminal First, we know the smallest amount of file system real estate that can be devoted to storing a file is 4,096 bytes Disk /dev/disk0: 7814037168 sectors, 3.6 TiB Logical sector size: 512 bytes Disk identifier (GUID): 5782184C-C4EA-47D2-9039-F1564F7735F3 Partition table holds up to 128 entries First usable sector is 34, last usable sector is 7814037134 Partitions will be aligned on 8-sector boundaries Total free space is 1389645 sectors (678.5 MiB) Number. If we divide that by the result we got from du (four), it shows the du default block size is 1,024 bytes.

Another approach is to use the seek flag with some simple multiplication of a megabyte block size (1024), thus the following command would create a file that is 100MB in size (1024 x 100): dd if=/dev/zero of=LargeTestFile.img bs=1024 count=0 seek=$ [1024*100 The file system block size is 4,096 bytes. If you want invisible files listed as well then add an. If, as the question detail states, one wants the file list to be ordered by file size, largest file size at the top, then add a capital S: ls -lhS. The letters after the - can be in any order in this instance. If you want human readable file sizes, simply add an h: ls -hl.

Does a zero byte file take up 4k