Any Ideas? Post: 22747

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Top Forums Shell Programming and Scripting Any Ideas? Post 22747 by Docboyeee on Monday 10th of June 2002 11:59:20 AM

06-10-2002

Registered User

Any Ideas?

I have several staging directories on my UNIX server.

/usr2/data1
/usr2/data2
/usr2/data3
/usr2/data4
/usr2/data5
/usr2/data6

In these directories a file is transferred from different PC's connected to the network via TCP/IP. The File name is constant for all directories.

Transfers from the PC to the UNIX server could possibly take place several times during the day. Meaning - the information from PC1 that is sent to the UNIX server and placed in /usr2/data1 could possibly be sent several times during the course of the day or even several days before it is processed. I would like to write a script that would check each one of these directories and see if there is a file in there. The filename will be constant. My delima is this:

1) I don't want to overwrite a file that is currently sitting in that directory. So.. I would need to move the file out of the staging directory and place it over into a different directory. But let's suppose that when my script looks in this directory and sees a file in there... how am I to know whether the file has been completely transferred from the PC to the UNIX server? I don't want to try and move the file right in the middle of the ftp process between the PC and the UNIX server.

2) I want to rename the file and place it into a process directory for processing. However, I don't want to name the file the same name as a file that already exists in the directory.

3) I eventually want to cat all these files together for processing and move them out of my process directory into a hold directory in case something happened during the processing.

Anyone got any ideas ?

Docboyeee

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LEARN ABOUT FREEBSD

sticky

STICKY(7)					       BSD Miscellaneous Information Manual						 STICKY(7)

NAME

     sticky -- sticky text and append-only directories

DESCRIPTION

     A special file mode, called the sticky bit (mode S_ISTXT), is used to indicate special treatment for directories.	It is ignored for regular
     files.  See chmod(2) or the file <sys/stat.h> for an explanation of file modes.

STICKY DIRECTORIES

     A directory whose `sticky bit' is set becomes an append-only directory, or, more accurately, a directory in which the deletion of files is
     restricted.  A file in a sticky directory may only be removed or renamed by a user if the user has write permission for the directory and the
     user is the owner of the file, the owner of the directory, or the super-user.  This feature is usefully applied to directories such as /tmp
     which must be publicly writable but should deny users the license to arbitrarily delete or rename each others' files.

     Any user may create a sticky directory.  See chmod(1) for details about modifying file modes.

HISTORY

     A sticky command appeared in Version 32V AT&T UNIX.

BUGS

     Neither open(2) nor mkdir(2) will create a file with the sticky bit set.

BSD
								   June 5, 1993 							       BSD