Search for linux: findgrepxargs

Search for the abc. cpp file from the root directory, with no error output
Find/-name abc. cpp 2>/dev/null

Find the efg function in all. cpp files in the current directory.
Find.-name "*. cpp" | xargs grep 'efg'
Xargs expands the find result and uses it as a grep parameter.

In addition, commands such as rm mv report an error when operating on a large number of files-bash:/bin/rm: Argument list too long
Xargs is also available.
Delete all. cpp files in the current directory
Find.-name "*. cpp" | xargs rm