Windows command line usually accumulates

CTRL + C under Windows can also force end commands

1. findstr-Find a string in a file

This command is used by Help (findstr/?) at a glance, but the/s (search for matching files in the current directory and all subdirectories) is somewhat less intuitive to use. The direct use of the/s option command will be stuck and can only be ended with CTRL + C and must be in a format such as/s *.txt (TXT file under directories and subdirectories),/s * (directories and all files from the directory), to work properly.