If the perl file cannot be run in ubuntu, the system prompts that the file is not found.

If the perl file cannot be run in ubuntu, the system prompts that the file is not found-Linux general technology-Linux technology and application information. The following is a detailed description. Hello, everyone! How can I avoid running perl files in ubuntu. I used perl-v to check whether the perl compiler file is installed and the File Permission is checked. The root user has the X permission and then uses. /XXX. after running the pl file, the system prompts that the file or directory is not found. What is the problem? Which expert gives me some advice. Thank you...