11-29-2018
One problem you might have is that any update to the directory members (e.g. create new file, rename file, delete file etc.) will update te timestamp of the directory. You need to be clear in your design, else it will go wrong. There is no create date attribute. You may have to schedule a daily job to record that yourself. Overall though, do you want to:-
- Copy the directory if it was created on a particular date
- Copy the directory that was modified on a particular date
- Something else perhaps?
The distinction is on the file/directory attributes. You can tell when a file was last accessed (probably not relevant) changed or modified. A change includes created, permissions changed etc. Modified is the content of the file. In the case of a directory it is changes, but not modifications to the files it contains, so the directory is modified if a
chmod is run on a file it contains. If the content of the file is modified, then the directory remains the same.
Which case fits your need? If you need to know what directories are created since your last run, you would probably need to create a history file to tell you what you had and find anything new.
Kind regards,
Robin
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sticky(5) Standards, Environments, and Macros sticky(5)
NAME
sticky - mark files for special treatment
DESCRIPTION
The sticky bit (file mode bit 01000, see chmod(2)) is used to indicate special treatment of certain files and directories. A directory for
which the sticky bit is set restricts deletion of files it contains. A file in a sticky directory can only be removed or renamed by a user
who has write permission on the directory, and either owns the file, owns the directory, has write permission on the file, or is a privi-
leged user. Setting the sticky bit is useful for directories such as /tmp, which must be publicly writable but should deny users permission
to arbitrarily delete or rename the files of others.
If the sticky bit is set on a regular file and no execute bits are set, the system's page cache will not be used to hold the file's data.
This bit is normally set on swap files of diskless clients so that accesses to these files do not flush more valuable data from the sys-
tem's cache. Moreover, by default such files are treated as swap files, whose inode modification times may not necessarily be correctly
recorded on permanent storage.
Any user may create a sticky directory. See chmod for details about modifying file modes.
SEE ALSO
chmod(1), chmod(2), chown(2), mkdir(2), rename(2), unlink(2)
BUGS
The mkdir(2) function will not create a directory with the sticky bit set.
SunOS 5.10 1 Aug 2002 sticky(5)