Count the number of files in the current folder in Linux

1) count the number of files in the current folder
Ls-L | grep "^-" | WC-l

2) count the number of directories in the current folder

Ls-L | grep "^ d" | WC-l
 
3) count the number of files in the current folder, including
Ls-LR | grep "^-" | WC-l
 
4) count the number of directories in the folder, including
Ls-LR | grep "^ d" | WC-l
 
Note:
Ls-l
The long list outputs the file information in the current folder (note that the file here may be a directory, link, or device file, different from the common file)
 
Grep "^ -"
Here, the output information of the long list is filtered out, and only general files are retained. If only directories are retained, ^ d is used.
 
WC-l
Count the number of rows of output information. Because only common files are available, the statistical result is the number of rows of general file information, that is, the number of files.