Bash Shell Scripting - Using "semicolon" and "pipe"

The video tutorial covers the execution of multiple commands in a sequence and the use of pipes to pass the output of one command to another. It begins by explaining how to run several commands at once without linking their outputs. Then, it introduces the pipe symbol, which allows the output of one command to be used as the input for another. A practical example is provided using the 'cat', 'grep', and 'wc' commands to filter and count entries in a file. The video concludes with a recap of these concepts.

How can the output of one command be used as input for another command?

What is the significance of counting the number of users with a specific shell in the context of command line operations?