From ~/asgt2, execute following commands:

rm *

mkdir d1 d2 .d10 f11

touch f1 f2 .f20 d11

ls -al | wc -l

The result of the last command should be 11 (ell-ess dash-a-ell pipe to wc dash-ell).

But why does the command pipeline ls -a1 | wc -l write 10 to the console? (This is ell-ess dash-a-one pipe to wc dash-ell).

From ~/asgt2, execute following command:

rm -r *

Some files and directories remain. How many files and/or directories remain in ~/asgt2 (Not including the current and parent directory)?