You're asking how to know which scripts run during the next month. So are users still using this system? If so, can't you ask them what commands they are running? If cron is automatically running stuff, why not pull up the crontabs and look at them?
Files are normally in:
one file per username that has jobs scheduled. Although you shouldn't edit these files directly, they are perfectly readable with 'cat' for example.
Sorry if I'm on the wrong track here but I'm not clearly understanding your difficulty.
Hi There,
I have 3 scripts that have to be run one after the other. All 3 scripts are dependent of the other. Now, If I am about to run the second script, assuming that the first script has already been run, can I get the status of the first script.
The problem is that, My second script has... (11 Replies)
In the Java programme, I am calling function, "Runtime.getRuntime().exec( cmdarray ); " with the array of arguments in which first argument is the binary(C-executable) file and argv1,argv2 and so on. This will be executed on Sun OS system.. I can execute using "sh -c cmdarray" on the shell... (0 Replies)
Hello all,
I have a script callled 'ABCstartup' setup under /etc/rc.d/init.d
Softlink 'S91ABCstartup' pointing to above script has been created under /etc/rc.d/rc3.d
The script is not being executed when the server restarts.
The script runs successfully via manual execution:... (5 Replies)
Hi,
we have server, that is auditing actions executed, and then sends them to the syslog server.
But there is arguments to issued to the commands in the audit trail, but there is no such arguments in the syslog output on the syslog server!
Example - I executed:
# ls -la
audit... (1 Reply)
I have compiled my application on Solaris 10 with following description
SunOS ldg1 5.10 Generic_138888-03 sun4v sparc SUNW,Sun-Blade-T6320
The compiler is Sun C++ 5.9 SunOS_sparc Patch 124863-01 2007/07/25
But when installing the application on Solaris 9
SunOS odcarch02 5.9... (2 Replies)
Hi,
I am looking for a script wherein i will be able to execute below procedures one by one in line and next procedures starts only when the previous one completes and also after execution of each procedure i will be getting a automted mail as "PL/SQL PROCEDURE SUCCESSFULLY EXCETUTED".
... (1 Reply)
Hi every one, i am new to shell script. my people given a task to write a shell script that should execute number of shell scripts in that. in that, if any shell script is failed to execute, we have to run the main script again, but the script should start execute from the failed script only..
it... (1 Reply)
Hi every one, i am new to shell script. my people given a task to write a shell script that should execute number of shell scripts in that. in that, if any shell script is failed to execute, we have to run the main script again, but the script should start execute from the failed script only..
it... (6 Replies)
Hi All, how to list all the commands executed by users on a linux server.... I dont have access to others .bash_history. and i am not root user.. Please help.. Thanks in advance.. (6 Replies)
Discussion started by: nanz143
6 Replies
LEARN ABOUT SUSE
cron
CRON(8) System Manager's Manual CRON(8)NAME
cron - daemon to execute scheduled commands (ISC Cron V4.1)
SYNOPSIS
cron [-l load_avg] [-n]
DESCRIPTION
Cron should be started from /etc/rc or /etc/rc.local. It will return immediately, so you don't need to start it with '&'. The -n option
changes this default behavior causing it to run in the foreground. This can be useful when starting it out of init.
Cron searches /var/spool/cron for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into memory. Cron
also searches for /etc/crontab and the files in the /etc/cron.d directory, which are in a different format (see crontab(5)). Cron then
wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute. When execut-
ing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable in the crontab, if
such exists).
Additionally, cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has,
cron will then examine the modtime on all crontabs and reload those which have changed. Thus cron need not be restarted whenever a crontab
file is modified. Note that the Crontab(1) command updates the modtime of the spool directory whenever it changes a crontab.
Daylight Saving Time and other time changes
Local time changes of less than three hours, such as those caused by the start or end of Daylight Saving Time, are handled specially. This
only applies to jobs that run at a specific time and jobs that are run with a granularity greater than one hour. Jobs that run more fre-
quently are scheduled normally.
If time has moved forward, those jobs that would have run in the interval that has been skipped will be run immediately. Conversely, if
time has moved backward, care is taken to avoid running jobs twice.
Time changes of more than 3 hours are considered to be corrections to the clock or timezone, and the new time is used immediately.
PAM Access Control
On SUSE LINUX systems, crond now supports access control with PAM - see pam(8). A PAM configuration file for crond is installed in
/etc/pam.d/crond . crond loads the PAM environment from the pam_env module, but these can be overriden by settings in the crontab file.
SIGNALS
On receipt of a SIGHUP, the cron daemon will close and reopen its log file. This is useful in scripts which rotate and age log files.
Naturally this is not relevant if cron was built to use syslog(3).
CAVEATS
In this version of cron, /etc/crontab must not be writable by any user other than root. No crontab files may be links, or linked to by any
other file. No crontab files may be executable, or be writable by any user other than their owner.
SEE ALSO crontab(1), crontab(5), pam(8)AUTHOR
Paul Vixie <vixie@isc.org>
4th Berkeley Distribution 10 January 1996" CRON(8)