04-15-2009
How to make a script to run everytime a new file is copied into a directory??
Hi folks
I have a unix script script1 in a directory folder1 and also I have few input log files in this directory. My input log files will be copied into this directory folder1 from the portable thumb drive.
Now what I want is I need to run this script1 whenever any new file is copied into this directory and also in a generic way whenever the contents(files) in this folder1 directory changes.
It may look like I can do this with some cron job set to some time intervals everyday, but it will be simply wasting the CPU resources as most of the times I will be running complex scripts other than this script.
The unix environment I am using is cygwin installed in Windows XP.
Thanks in advance..........
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ARCHIVE(8) System Manager's Manual ARCHIVE(8)
NAME
archive - Usenet article archiver
SYNOPSIS
archive [ -a archive ] [ -f ] [ -i index ] [ -m ] [ -r ] [ input ]
DESCRIPTION
Archive makes copies of files specified on its standard input. It is normally run either as a channel feed under innd(8), or by a script
before expire(8) is run.
Archive reads the named input file, or standard input if no file is given. The input is taken as a set of lines. Blank lines and lines
starting with a number sign (``#'') are ignored. All other lines should specify the name of a file to archive. If a filename is not an
absolute pathname, it is taken to be relative to /var/spool/news.
Files are copied to a directory within the archive directory, /var/spool/news/news.archive. The default is to create a hierarchy that mim-
ics the input files; intermediate directories will be created as needed. For example, the input file comp/sources/unix/2211 (article 2211
in the newsgroup comp.sources.unix) will be copied to /var/spool/news/news.archive/comp/sources/unix/2211.
OPTIONS
-a archive
If the ``-a'' flag is used then its argument specifies the directory to archive in instead of the default.
-f If the ``-f'' flag is used, then all directory names will be flattened out, replacing the slashes with periods. In this case, the
file would be copied to /var/spool/news/news.archive/comp.sources.unix/2211.
-i If the ``-i'' flag is used, then archive will append one line to the specified index file for each article that it copies. This
line will contain the destination name and the Message-ID and Subject headers.
-m Files are copied by making a link. If that fails a new file is created. If the ``-m'' flag is used, then the file will be copied
to the destination, and the input file will be replaced with a symbolic link pointing to the new file.
-r By default, archive sets its standard error to /var/log/news/errlog. To suppress this redirection, use the ``-r'' flag.
EXIT STATUS
If the input is exhausted, archive will exit with a zero status. If an I/O error occures, it will try to spool its input, copying it to a
file. If there was no input filename, the standard input will be copied to /var/spool/news/out.going/archive and the program will exit.
If an input filename was given, a temporary file named input.bch (if input is an absolute pathname) or /var/spool/news/out.going/input.bch
(if the filename does not begin with a slash) is created. Once the input is copied, archive will try to rename this temporary file to be
the name of the input file, and then exit.
EXAMPLES
A typical newsfeeds(5) entry to archive most source newsgroups is as follows:
source-archive
:!*,*sources*,!*wanted*,!*.d
:Tc,Wn
:/usr/lib/news/bin/archive -f -i
/usr/spool/news/news.archive/INDEX
HISTORY
Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.14, dated 1996/10/29.
SEE ALSO
newsfeeds(5).
ARCHIVE(8)