topic Re: ll command in Operating System - HP-UX

ll command

John Carver — Fri, 06 Sep 2002 21:03:21 GMT

When an ll command is issued, the results will
show the size of the directories and files. If a new directory is created, it has a size of 96. It will quickly grow to 1024, then 2048, etc as files are added. What exactly does this size indicator mean? It doesn't seem to indicate an actual size.

Re: ll command

Ted Ellis_2 — Fri, 06 Sep 2002 21:12:10 GMT

no it is just adding information to the header for the directory... at least that is what I think is happening. If you want to check the actual usage under a directory... try this:

du -sk *

this will report, one line at a time and in KB, the amount of disk usage for everything immediately under the directory you are sitting.

Re: ll command

Wodisch — Fri, 06 Sep 2002 22:09:36 GMT

Hi John,

a directory in a UN*X filesystem is just a table containing only the names of the files and their resp. I-Node number. So, the more files you have in a directory, and the longer their names are, the more space that directory will occupy on disk - but it does NOT matter how big the individual files are!
And since directories cannot shrink, even if you delete files, the directoy itself will only grow over time...
Remember that diskspace is allocated in 1KB chunks, usually (HFS: fragments, VxFS: blocks), hence even the empty directory in its "early" days does occupy 1KB (not 96bytes), though only 96 bytes of that space are actually used.

HTH,
Wodisch

Re: ll command

Sean OB_1 — Sat, 07 Sep 2002 03:36:11 GMT

The directory simply holds the file and inode information.

It will grow over time as files are added to the directory. Remember that the directory size cannot shrink, but typically it uses so little space that it isn't an issue.