and.priorities man page on DigitalUNIX

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AND.PRIORITIES(5)		 File Formats		     AND.PRIORITIES(5)

       /etc/and.priorities - priority database for the auto nice daemon.

       This manual page documents and.priorities for and version 1.0.7.

       This  is	 the  priority database file for and.  It stores (user, group,
       command, nicelevels) tuples (hereafter called entries) to determine the
       new nice level (or the kill signal, for that matter) when a job reaches
       one of  the  time  limits  defined  in  /etc/and.conf.	(See  lv1time,
       lv2time,	 and lv3time on the and.conf manual page for details.) See the
       affinity setting in  /etc/and.conf  for	how  ambiguities  between  the
       fields  (user,  group, command) are dealt with when searching the data‐
       base to determine the new nice level for a job.

       Comments start with a # in the first column.  Empty lines are  ignored.
       Unlike  with  other  configuration  files, lines cannot be concatenated
       with a backslash. Furthermore, this file is case sensitive.

       and allows for host-specific sections in the configuration file.	 These
       work  as	 lines of the form on somehost and work as follows: the parser
       determines if the host name (as returned by  gethostname)  matches  the
       extended regular expression that follows the on keyword. If it does, it
       just keeps processing the file as if nothing had happened. If  it  does
       not match, however, everything up to the next on keyword is skipped. So
       if you want to end a  host-specific  section,  you  must	 write	on  .*
       (which matches all hosts) to switch back to normal.

       Don't forget to kill -HUP the auto nice daemon to enable the changes.

       A  valid	 entry	consists of a line of six columns, separated by one or
       more spaces. These columns are: (in that order)

       user The user ID the command is running	under.	May  be	 a  user  name
	    (which will be looked up in the password file and, if enabled, via
	    NIS), or a numeric user ID, or an asterisk for any user.

	    The group ID the command is running under. May  be	a  group  name
	    (which  will be looked up in the group file and again, if enabled,
	    via NIS), or a numeric group ID, or an asterisk for any group.

	    The name of the command, without path. May be a command, a regular
	    expression to match multiple commands, or an asterisk for any com‐
	    mand.  Note that "foobar" will not match "/usr/bin/foobar"	-  you
	    probably mean ".*foobar" or even ".*foobar.*".

       nicelevel 1
	    The	 nice  level  after  lv1time CPU time was used by the command.
	    Positive numbers and 0 are interpreted as  nice  levels;  negative
	    numbers  are  interpreted  as signals to be sent to the command. A
	    "nice level" of 19 will almost stop the job, -9 will actually kill
	    it. (Like in kill -9.)  lv1time can be set in /etc/and.conf

       nicelevel 2
	    Same but after lv2time.

       nicelevel 3
	    Same but after lv3time.

       Here  are  some	entries from the real world (i.e. from "my" cluster at
       the Institute). As lv[123]time, 5 min., 20 min., and 1 hour is assumed.
       (Which  is  the default. See /etc/and.conf for details.) You might also
       check the default priority database that comes with and.

       # A finer default nice level
       * * * 4 8 12

       # User dau is an idiot, so treat him like accordingly
       dau * * 19 19 19

       # Netscape sometimes goes berserk, we must stop it
       * * netscape 4 -9 -9

       # Most hosts are free for everyone but some are
       # especially for the FOO group
       * * * 4 8 12
       on (bar|baz)
       * * * 8 12 16
       # ... or, more radical: * * * -9 -9 -9
       * foo * 4 8 12
       on .*

       # KDE screen savers...
       * * .*kss 16 16 16

	    The priority database (in plain text). Contains the (user,	group,
	    command,  nicelevels)  tuples.  This  is  what this manual page is

       and(8), and.conf(5), kill(1), regex(7), renice(8)


       The auto nice daemon and this  manual  page  were  written  by  Patrick
       Schemitz <>

Unix				  27 Jan 2002		     AND.PRIORITIES(5)

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