Runtime environment

Control-M runs a job script under the environment specified for the job owner (the name specified in the Run As parameter). The environment affects these factors in the execution of the script:

• Establishing the user log on process: As jobs are submitted for execution, Control-M/Agent logs in as the user and executes the job (the shell script) using the following command:

  su- <owner> -c <script name>

  During the log in process, the user environment is set according to the shell type specified in /etc/passwd.

• Establishing the shell script startup process: The startup process for running the script depends upon the type of shell under which the script runs.
  • When a csh or tcsh script is run, the .cshrc file of the job owner is executed as part of the startup process for the script.
  • For all other shell types, the .profile file of the job owner is executed as part of the startup process for the script.

    NOTE: The .login file is not executed as part of the start up process.

  • When Control-M executes job scripts, there is no terminal associated with the job. Therefore, do not use commands in a script that query terminal characteristics or take input from a terminal.
  • The shell script startup process sets the environment variables that are available when the script is run. Use the #! statement to indicate the shell under which the script is intended to run.
• Indicating the Working directory: The working directory when the script runs is initially set to the home directory of the job owner (the home directory for each user is set by the UNIX administrator in /etc/passwd).

  When writing scripts that access files, specify the file name in the script with a full path or with a path relative to the home directory of the job owner.