11-16-2002
May be as simple as not using absolute paths or not exporting env. variables
most differences in behavior we see between cron running a job and manual runs is because of differences in path setting...
it is always imperative to use absolute paths (starting from /) in all the directory paths in your script...
similarly I hope that you export all the relevant environment variables (like PATH etc) in the very beginning of your shell script... if you run a script manually it will inherit all the env. variables of your logon shell (some of them may be set in your .profile).. if you run a script using cron it will inherit all the cron user's env. variables... you need to ensure within the script that all required env. variables are explicitly set and exported, so that these hold the same values for the subsequent commands using them - both in cron and manual modes...
the java exception you show indicates that a java class was not found in the class path...
Hope this helps...
Cheers!
Vishnu.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I was wondering if it was possible to call a unix command directly from a Java program during run-time. This command could very very basic e.g. "ps -ef" returned as a string, all I need is a starting place so if anyone has any suggestion or examples I would be very grateful (2 Replies)
Discussion started by: QUartz Ite
2 Replies
2. UNIX for Dummies Questions & Answers
I am running some shell scripts through a foll cron job, the script works fine and there are no errors in the log file but I receive the following error in mail for the jobs:
stty: no such device or address
What does the above error indicate, here is the cron job:
0 22 * * 0... (2 Replies)
Discussion started by: knarayan
2 Replies
3. UNIX for Dummies Questions & Answers
HI
I need to build a GUI where a button could execute a script in Solaris 8. I am working with Sun ONE Studio 7 Enterprice Edition.
Thanks (1 Reply)
Discussion started by: javierelizabeth
1 Replies
4. UNIX for Dummies Questions & Answers
This is a line from my crontab:
12 12 * * * /home/users/ElburdNDL/www/backups/adddate.php
The permissions of the script is 755 it should execute ok....but it doesn't.
Do I somehow have to give cron the path to PHP or something?
If so, how exactly? Thanks.
Ed
PS Am a total newbie... (10 Replies)
Discussion started by: eludlow
10 Replies
5. Solaris
Solaris 10. Getting a boatload of "Resource unavailable" on read errors for a Java process which is taking 350% of CPU. No I/O issues and dtrace shows lots of lwp calls. There are only 54 threads (or so, it fluxuates) but certainly not a lot. App is WebLogic.
App has been up since the third and... (2 Replies)
Discussion started by: BOFH
2 Replies
6. Shell Programming and Scripting
I have the following cron job in the crontab.
#! /bin/bash
25 15 * * 1-5 /export/home/svittala/scripts/scpt1.sh >/dev/null 2>&1.
The problem that I am facing is - the scpt1.sh can be executed manually. But, it is not executing through CRON. Not sure what's the issue. Any hints?. Thanks.... (5 Replies)
Discussion started by: vskr72
5 Replies
7. Shell Programming and Scripting
I can call a C program from the shell and results are outputted as normal. The C program processes some files and spits out a .csv file.
If I scheduled it in cron, there is no output.
If their a special way to schedule C programs in cron?
thanks & regards (1 Reply)
Discussion started by: hazno
1 Replies
8. Shell Programming and Scripting
Hi All,
I need to call a java method from a shell script. I know we can use the command
java ClassName
to call the main method in it. But I need to call another method that is there in the class and pass an email to it.
Can I use
java ClassName.MethodName(email)
Any help will be... (4 Replies)
Discussion started by: RahulK
4 Replies
9. Programming
I have an adapter written in c++ from which I need to call a java service point.
Could anybody please provide an example program of calling java from c++
thanks in advance. (0 Replies)
Discussion started by: axes
0 Replies
10. Red Hat
Hi,
I am trying to call a bash script from a java file.
Code to call bash script will look like:
Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec("mybashfile.sh");
It is succesfully calling the bash file.
I am using simple rm commands in the script to remove... (0 Replies)
Discussion started by: lakshman.forums
0 Replies
cron(8) System Manager's Manual cron(8)
NAME
cron - The system clock daemon
SYNOPSIS
/usr/sbin/cron
DESCRIPTION
The cron daemon runs shell commands at specified dates and times. Commands that are to run according to a regular or periodic schedule are
found within the crontab files. Commands that are to run once only are found within the at files. You submit crontab and at file entries
by using the crontab and at commands. Because the cron process exits only when killed or when the system stops, only one cron daemon
should exist on the system at any given time. Normally, you start the cron daemon from within a run command file.
During process initialization and when cron detects a change, it examines the crontab and at files. This strategy reduces the overhead of
checking for new or changed files at regularly scheduled intervals. The cron command creates a log of its activities. The cron daemon
must be started from the system startup scripts because it must begin execution without a login user ID set. The cron daemon starts each
job with the following process attributes stored with the job by the invoking process: Login user ID Effective and real user IDs Effective
and real group IDs Supplementary groups
It also establishes the following attributes from the authentication profile of the account associated with the login user ID of the invok-
ing process: Audit control and disposition masks Kernel authorizations
DIAGNOSTICS
The at and batch programs will refuse to accept jobs submitted from processes whose login user ID is different from the real user ID.
FILES
Specifies the command path. Main cron directory Directory containing the crontab files. List of allowed users. List of denied users His-
tory information for cron Queue description file for at, batch, and cron
RELATED INFORMATION
Commands: at(1), crontab(1), rc0(8), rc2(8), rc3(8)
Files: queuedefs(4) delim off
cron(8)