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Follow these steps resolve the issue:

 
Before proceeding, it is recommended to back-up your system before making any changes.
 
  1. Check whether the file "/etc/init.d/functions" exists on your system.
  2. If the file is not found, perform the following steps:
    1. Open a terminal on you system.
    2. Type the following command and press 'Enter':

      sudo yum install initscripts

       
      This command installs the initscripts package, which contains basic system scripts used during system boot and network interface management.
       
  3. If the file is successfully generated after installing the initscripts package, the issue should be resolved. Proceed to install DSA on your Linux server.