Very Computer

by **kn?kman** » Sat, 08 Feb 2003 19:41:02

Hi
Is it possible to get the creation date/time of a file in aix4.3.3
file is change several times since then, so date in "ls -l" shows date of
latest use

TIA
kn?kmans

by **Hubert Quarantel-Colomban** » Sat, 08 Feb 2003 19:44:31

> Hi
> Is it possible to get the creation date/time of a file in aix4.3.3
> file is change several times since then, so date in "ls -l" shows date of
> latest use

> TIA
> kn?kmans

Hello,

Creation date/time of file is _never_ stored on any Unix.

The only timestamps stored are:
- mtime: date of last modification,
- atime: date of last access,
- and ctime: date of last change on the i-node.

sorry, but there is no possibility for you to get creation timestamp...

Hubert.

by **Dale Talco** » Sat, 08 Feb 2003 18:30:48

>> Is it possible to get the creation date/time of a file in aix4.3.3
>Creation date/time of file is _never_ stored on any Unix.

Not quite true any more. Mac OS X is Unix based, but supports a file system
that records file creation time in addition to the usual Unix timestamps.

However, that doesn't help on AIX.

--
Dale Talcott, IT Research Computing Services, Purdue University

by **Dale Talco** » Mon, 10 Feb 2003 21:11:10

>>Not quite true any more. Mac OS X is Unix based, but supports a file system
>>that records file creation time in addition to the usual Unix timestamps.
>>However, that doesn't help on AIX.
>Does Mac OS X's filesystem use a (read-only) extended attribute (a la BeFS),
>or is the creation time part of the filesystem's built-in inode structure?

The on-disk equivalent of an inode has the creation time as part of its
primary information. The following is from the structure for a catalog
entry:

...
UInt32 createDate;
UInt32 contentModDate;
UInt32 attributeModDate;
UInt32 accessDate;
UInt32 backupDate;
...

So, creation time is on a par with access and mod times.

However, the in-memory vnode structure has only the three traditional
timestampes. You must use a special API to read/write the additional
info in the catalog entries.

--
Dale Talcott, IT Research Computing Services, Purdue University

Very Computer

how to get creation date/time of o file in aix4.3.3

how to get creation date/time of o file in aix4.3.3

how to get creation date/time of o file in aix4.3.3

how to get creation date/time of o file in aix4.3.3

how to get creation date/time of o file in aix4.3.3