im.bit a udalosti od souboru ?

[Jaroslav Benkovsky]

Petr Snajdr wrote:
> Druha vec je zda je mozne, aby byl nejaky proces informovan o zmene
> stavu konkretnoho souboru bez toho, ze by v cyklu tento stav cetl sam
> ( tj. jakakoli modifikace, smazani atd. ). na tuto myslenku me privedl
> fm (File manager na IRIXu), ktery zobrazuje vedle jmena aktualni
> velikost tj. pokud se soubor vecuje ( napr. download z ftp ) je videt
> jak ty cislice "bezi" taky. Prijde mi neunosne, aby to bylo reseno
> cyklickym ctenim stavu vsech souboru a kontrolou zda nebyl vytvoren novy


IRIX5.3$ man fam

     Fam is a server that tracks changes to the file system and relays
these
     changes to interested applications.  Applications such as
WorkSpace(1G)
     and Mailbox(1G) present an up-to-date view of the file system.  In
the
     absence of fam, these applications and others like them would be
forced
     to poll the file system to detect changes.  Fam is considerably
more
     efficient.

     Applications can request fam to monitor any files or directories in
the
     file system.  When fam detects changes to these files, it notifies
the
     appropriate application.  Fam(3X) provides a programmatic interface
to
     fam.

     Fam is informed of file system changes as they happen by the IRIX
kernel
     through the imon(1M) pseudo device driver.  Currently, fam servers
do not
     communicate with each other and consequently, they poll to
determine the
     state of NFS mounted file systems.  The -t option specifies the
polling
     interval in seconds.  The default polling interval is 3 seconds. 
Since
     fam is invoked by inetd(1M), you must edit the /etc/inetd.conf file
to
     change the polling interval.

.....

						Edheldil