Exercise 2-1
drwxr-xr-x - dup
drwxr-xr-x - echo
drwxr-xr-x - fetch
drwxr-xr-x - fetchall
-rw-r--r-- 46 go.mod
-rwxr-xr-x 2089937 goproglang
drwxr-xr-x - httpserve
drwxr-xr-x - lissajous
-rw-r--r-- 328 main.go
drwxr-xr-x - tempconv