How does Linux calculate the number of files?

To calculate the number of files in a directory, you can use the following command:

ls -l | grep "^-" | wc -l

This command will list all the files and subdirectories in a directory, filter out lines starting with “-“, and then use the wc -l command to count the number of lines, i.e., the number of files.

Additionally, if you only want to calculate the number of files in a directory (excluding subdirectories), you can use the following command:

ls -l | grep "^-" | wc -l

This command will only list the files in the directory, excluding subdirectories.