home *** CD-ROM | disk | FTP | other *** search
- This is version of 3.1.x of the at/atrun pair for running commands at a
- specified time. To install, do a
-
- $ ./configure
-
- You might want to change the default maximum load at which batch
- jobs are still started by specifying --with-loadavg_mx=... as
- argument to configure. The default is 0.8, so that, normally, no
- batch job will be started when there's still activity going on.
- For an SMP system, you will want to increase this.
-
- Then, do
-
- $ make
-
- and, as root,
-
- # make install
-
- There are two ways of running at jobs.
-
- The new one is to start up an atd daemon at boot time.
-
- The old one is to put
-
- * * * * 0,5,10,15,20,25,30,35,40,45,50,55 /usr/lib/atrun
-
- into root's crontab file (or wherever you put the atrun binary;
- don't forget to start up cron.)
-
- (To place the line into crontab, do a
-
- # crontab -l > cront
- # vi cront
-
- [or whatever your favourite editor is. Add the line above if it is
- not already in there.]
-
- # crontab -r cront
- )
-
- The new way has advantages on portable systems (where it doesn't wake up
- the disk every five minutes or so), and it also does immediate execution
- of batch jobs. The old way is compatible with the setup that's being
- shipped with most Linux distributions, and doesn't have an extra process
- hanging around all the time.
-
- If you happen to have an older version of at around, make sure to delete
- it (it might lurk in /bin, for example).
-
- Bug reports to:
- http://bugs.debian.org/ (Debian bug tracking system)
- or
- at@packages.debian.org (Debian at package maintainers)
-
- If at all possible, I'd appreciate you telling me which version you
- found a bug in; run at -V to find out which one.
-
- If you try to use at(1) on a system which does not support setreuid(2),
- i.e. if you get an error whch looks vaguely like
-
- undefined symbol _setreuid referenced from text segment
-
- DO NOT try to install at on your system by removing all that strange
- PRIV stuff. You will install a rather glaring security hole that way.
-