Write and run commands in Linux for the following tasks:
- To check if a particular process is running or not
- To see currently running processes and other informations like memory and CPU usages
- List all file names that have a letter h as 4th character in the name
- List all the file names that have the number 2 or 5 in the name
In a Linux environment, you can perform these tasks using various command-line tools and utilities. Here are the commands for each task:
1. To check if a particular process is running or not:
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