➜ make build              
go build -v cmd/addscheme -o bin/
can't load package: package cmd/addscheme is not in GOROOT (/home/sergey/.asdf/installs/golang/1.14.4/go/src/cmd/addscheme)
can't load package: package -o is not in GOROOT (/home/sergey/.asdf/installs/golang/1.14.4/go/src/-o)
can't load package: package bin is not in GOROOT (/home/sergey/.asdf/installs/golang/1.14.4/go/src/bin)
make: *** [Makefile:2: build] Error 1

➜ cat go.mod          
module scan-tools

go 1.14

srcFolder := "copy/from/path"
destFolder := "copy/to/path"
cpCmd := exec.Command("cp", "-rf", srcFolder, destFolder)
err := cpCmd.Run()

$ cht.sh cp     
# cp
# Copy files and directories.

# Copy a file to another location:
cp path/to/file.ext path/to/copy.ext

# Copy a file into another directory, keeping the filename:
cp path/to/file.ext path/to/target_parent_directory

# Recursively copy a directory's contents to another location (if the destination exists, the directory is copied inside it):
cp -r path/to/directory path/to/copy

# Copy a directory recursively, in verbose mode (shows files as they are copied):
cp -vr path/to/directory path/to/copy

# Copy text files to another location, in interactive mode (prompts user before overwriting):
cp -i *.txt path/to/target_directory

# Dereference symbolic links before copying:
cp -L link path/to/copy