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htcacheclean(8) [linux man page]

HTCACHECLEAN(8) 						   htcacheclean 						   HTCACHECLEAN(8)

NAME

       htcacheclean - Clean up the disk cache

SYNOPSIS

       htcacheclean [ -D ] [ -v ] [ -t ] [ -r ] [ -n ] -ppath -llimit

       htcacheclean [ -n ] [ -t ] [ -i ] -dinterval -ppath -llimit

SUMMARY

       htcacheclean  is  used  to keep the size of mod_disk_cache's storage within a certain limit. This tool can run either manually or in daemon
       mode. When running in daemon mode, it sleeps in the background and checks the cache directories at regular intervals for cached content	to
       be removed. You can stop the daemon cleanly by sending it a TERM or INT signal.

OPTIONS

       -dinterval
	      Daemonize  and  repeat  cache  cleaning every interval minutes. This option is mutually exclusive with the -D, -v and -r options. To
	      shutdown the daemon cleanly, just send it a SIGTERM or SIGINT.

       -D     Do a dry run and don't delete anything. This option is mutually exclusive with the -d option.

       -v     Be verbose and print statistics. This option is mutually exclusive with the -d option.

       -r     Clean thoroughly. This assumes that the Apache web server is not running (otherwise you may get garbage in the cache).  This  option
	      is mutually exclusive with the -d option and implies the -t option.

       -n     Be  nice. This causes slower processing in favour of other processes. htcacheclean will sleep from time to time so that (a) the disk
	      IO will be delayed and (b) the kernel can schedule other processes in the meantime.

       -t     Delete all empty directories. By default only cache files are removed, however with some configurations the large number of directo-
	      ries  created  may  require attention. If your configuration requires a very large number of directories, to the point that inode or
	      file allocation table exhaustion may become an issue, use of this option is advised.

       -ppath Specify path as the root directory of the disk cache. This should be the same value as specified with the CacheRoot directive.

       -llimit
	      Specify limit as the total disk cache size limit. The value is expressed in bytes by default (or attaching B to the number).  Attach
	      K for Kbytes or M for MBytes.

       -i     Be  intelligent  and  run  only  when  there was a modification of the disk cache. This option is only possible together with the -d
	      option.

EXIT STATUS

       htcacheclean returns a zero status ("true") if all operations were successful, 1 otherwise.

Apache HTTP Server						    2008-05-06							   HTCACHECLEAN(8)

Check Out this Related Man Page

REBOOT(8)						    BSD System Manager's Manual 						 REBOOT(8)

NAME

     halt, reboot -- stopping and restarting the system

SYNOPSIS

     halt [-lnqu]
     reboot [-lnq]

DESCRIPTION

     The halt and reboot utilities flush the file system cache to disk, send all running processes a SIGTERM (and subsequently a SIGKILL) and,
     respectively, halt or restart the system.	The action is logged, including entering a shutdown record into the wtmp(5) file.

     When the system is halted with the halt command, the system is powered off.

     The options are as follows:

     -l      The halt or reboot is not recorded in the system log.  This option is intended for applications such as shutdown(8), that call reboot
	     or halt and log this themselves.

     -n      The file system cache is not flushed.  This option should probably not be used.

     -q      The system is halted or restarted quickly and ungracefully, and only the flushing of the file system cache is performed (if the -n
	     option is not specified).	This option should probably not be used.

     -u      The system is halted up until the point of removing system power, but waits before removing power for 5 minutes so that an external
	     UPS (uninterruptible power supply) can forcibly remove power.  This simulates a dirty shutdown to permit a later automatic power on.
	     OS X uses this mode automatically with supported UPSs in emergency shutdowns.

     Normally, the shutdown(8) utility is used when the system needs to be halted or restarted, giving users advance warning of their impending
     doom and cleanly terminating specific programs.

SIGTERM TO SIGKILL INTERVAL

     The SIGKILL will follow the SIGTERM by an intentionally indeterminate period of time.  Programs are expected to take only enough time to
     flush all dirty data and exit.  Developers are encouraged to file a bug with the OS vendor, should they encounter an issue with this func-
     tionality.

SEE ALSO

     wtmp(5), shutdown(8), sync(8)

HISTORY

     A reboot utility appeared in Version 6 AT&T UNIX.

BSD
								   June 9, 1993 							       BSD
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