fcrondyn - dialog dyn-amically with a running fcron daemon
SYNOPSIS
fcrondyn [ -c file ] [ -i ]
fcrondyn [ -c file ] -x command
fcrondyn [ -h ]
DESCRIPTION
Fcrondyn is a user tool intended to interact with a running
fcron daemon. It can, for instance, list user's jobs loaded by fcron, run one of
them, renice a running job, send a signal to a running job, etc.
OPTIONS
-i
Run fcrondyn in interactive mode. fcrondyn is also
run in interactive mode when no option is given.
-x command
Run command and returns
immediately. See below for syntax
and a list of commands.
-c file
Make fcrondyn use config file
file instead of default config file
/etc/fcron.conf. To interact with a running
fcron process, fcrondyn must use the same config file as the process. That
way, several fcron processes can run simultaneously on an only system.
-d
Run in debug mode. In this mode, many informational
messages will be output in order to check if anything went wrong.
-h
Display a brief description of the options.
-V
Display an informational message about fcrondyn,
including its version and the license under which it is distributed.
COMMAND DESCRIPTION
Fcrondyn's command syntax is the following :
commandarg1arg2 [...]
An argument of a fcrondyn command is of one of the following
type :
"ARGUMENT TYPES OF FCRONDYN'S COMMANDS"
user
A valid user name.
jobid
A job id given by one of fcrondyn's
ls* commands (i.e. an integer).
sig
A signal number, or its name (case does not matter).
For instance, "term" or "15".
niceval
A job priority value. A
niceval is an integer from -20 (highest
priority) to 19 (lowest) (only root is allowed to use a negative value with this
option).
Last, but not least, the following commands are recognized
(optional arguments are between []) :
"VALID FCRONDYN'S COMMANDS"
help
h
Print an help message about fcrondyn's
commands.
quit
q
In interactive mode, quit fcrondyn.
ls [user]
List all jobs of user. When ls is
run by root, all users are listed unless a user name is given as argument. See below for some explanations about the
fields used by ls* commands.
ls_lavgq [user]
Same as ls, but list only the jobs
which are in the load-average queue (i.e. which are waiting for a lower load
average to be run).
ls_serialq [user]
Same as ls, but list only the jobs
which are in the serial queue (i.e. which are waiting for
other jobs to be finished).
ls_exeq [user]
Same as ls, but list only the jobs
which are running.
detail jobid
Print details about a
job. jobid is the one given by
ls.
runnow jobid
Instead of waiting for the next scheduled execution
time, run the job now. The next execution time is changed as
if the job had run on schedule.
run jobid
Run the job now. Its next execution time is not changed.
kill sig jobid
Send a signal to a running job.
renice niceval jobid
Change the priority of a running job.
"FIELDS USED BY DETAIL AND LS* COMMANDS"
ID
Job's unique identification number.
USER
User who owns this job.
PID
The pid of the running job.
INDEX
Index of the job in the serial queue (i.e. it will be run when all the jobs of an inferior index have been run)
R&Q
The job has this number instances running or queued in
serial or lavg queue.
OPTIONS
List of main options which are set. L for lavg jobs
(LO if the job is also lavgonce), S for serial (SO if also
serialone), ES for exesev jobs.
LAVG
3 values, corresponding to the 1, 5, and 15-minute (in
this order) system load average values below which the job
should be run (see lavg option).
UNTIL
Field corresponding to the until option.
STRICT
Field corresponding to the strict option. Y for
yes, N for no.
SCHEDULE
Next run is scheduled at this time and date.
CMD
The command that will be executed.
RETURN VALUES
Fcrondyn returns 0 on normal exit and 1 on
error.
CONFORMING TO
Should be POSIX compliant.
FILES
/etc/fcron.conf
Configuration file for fcron, fcrontab and
fcrondyn : contains paths (spool dir, pid file) and default programs to use
(editor, shell, etc). See fcron.conf(5)
for more details.
/etc/fcron.allow
Users allowed to use fcrontab and fcrondyn (one
name per line, special name "all" acts for everyone)
/etc/fcron.deny
Users who are not allowed to use fcrontab and
fcrondyn (same format as allow file)
/etc/pam.d/fcron (or /etc/pam.conf)
PAM configuration file for
fcron. Take a look at pam(8) for more details.
SEE ALSO
fcrontab(1) fcrondyn(1) fcrontab(5) fcron.conf(5) fcron(8)
If you're learning how to use fcron from scratch, I suggest
that you read the HTML version of the documentation (if your are not reading it
right now ! :) ) : the content is the same, but it is easier to navigate thanks
to the hyperlinks.
