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Using Command Line Options

  • The command line option -env=[var_name]=[var_value] adds an environment variable to the JobScheduler.
    • This variable is established only in the scope of the JobScheduler.
  • If a variable [var_name] already exists in the user environment then the value of the -env option will become effective.
  • The Windows Service of the JobScheduler reads the system and user environment only if it runs in the corresponding user account.
  • Environment variables are considered for substitution when used in settings (see Job Scheduler Reference Documentation).

Start Script with -env

Example for starting the JobScheduler with an environment variable:

 unix-shell>[install_path]/bin/jobscheduler.sh start -env="hello=world" 
 windows-shell>[install_path]\bin\jobscheduler.cmd start -env="hello=world"

Environment Variables Script: jobscheduler_environment_variables.(sh|cmd)

The JobScheduler start script reads the environment from the .\user_bin\jobscheduler_environment_variables.(sh|cmd) script.

  • You will find an example in ./user_bin/jobscheduler_environment_variables.(sh|cmd)-example.
  • Rename this file to ./user_bin/jobscheduler_environment_variables.(sh|cmd) to make it effective.
  • For Unix make sure that ./user_bin/jobscheduler_environment_variables.sh is executable.
  • Edit ./user_bin/jobscheduler_environment_variables.(sh|cmd) if you always want to start the JobScheduler with additional environment variables. Then it would not be necessary to call the above start script with the -env option or to reinstall a Windows Service.

Example snippet of [install_path]/user_bin/jobscheduler_environment_variables.(sh|cmd) for adding an environment variable:

 ...
 # unix 
 export hello="world"
 export PERL5LIB=`perl -e 'print join ":", @INC'`
 ...

 ...
 rem windows 
 SET SCHEDULER_PARAMS=%SCHEDULER_PARAMS% -env="hello=world" 
 SET SCHEDULER_START_PARAMS=%SCHEDULER_START_PARAMS% -env="hello=world"
 ...

Windows Service

The Windows Service always starts JobScheduler with the options and environment variables that have been used for installation. During the Windows JobScheduler setup a Windows Service is installed that has to be re-installed in order to make new environment variables effective.

For this

  • stop the JobScheduler if it were started:
     
 windows-shell>[install_path]\bin\jobscheduler.cmd stop
  • remove the JobScheduler service:
     
 windows-shell>[install_path]\bin\jobscheduler.cmd remove
  • install the JobScheduler service with -env option or edit the jobscheduler_environment_variables.cmd file as stated above
     
 windows-shell>[install_path]\bin\jobscheduler.cmd install -env=hello=world
 ...or...
 windows-shell>[install_path]\bin\jobscheduler.cmd install
  • start the JobScheduler service:
     
 windows-shell>[install_path]\bin\jobscheduler.cmd start_service

Further references

 

 

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