Golang checker for a several linters

gocheck.sh

#!/usr/bin/env bash
BIN="${GOPATH}/bin"

if [[ "$(which go)" == "" ]]; then
    echo "Install GoLang first..."
    exit 1
fi
if [[ "$(which gofmt)" == "" ]]; then
    echo "Install GoLang with gofmt first..."
    exit 1
fi
if [[ "$(which golint)" == "" ]]; then
    echo "Installing golint..."
    echo "sudo apt install golint"
    sudo apt install golint
fi
if [[ "$(which errcheck)" == "" && ! -f "${BIN}/errcheck" ]]; then
    echo "Installing errcheck..."
    echo "go get -u github.com/kisielk/errcheck"
    go get -u github.com/kisielk/errcheck
fi
if [[ "$(which golangci-lint)" == "" && ! -f "${BIN}/golangci-lint" ]]; then
    echo "Installing golangci-lint..."
    echo "go get -u github.com/golangci/golangci-lint/cmd/golangci-lint"
    go get -u github.com/golangci/golangci-lint/cmd/golangci-lint
fi
if [[ "$(which gocyclo)" == "" && ! -f "${BIN}/gocyclo" ]]; then
    echo "Installing gocyclo..."
    echo "go get -u github.com/fzipp/gocyclo"
    go get -u github.com/fzipp/gocyclo
fi

echo "Run tests..."
go test -race ./...
echo "...done..."
sleep 3

echo "Run fmt..."
gofmt -d -e -s .
echo "...done..."
sleep 3

echo "Run go vet..."
go vet .
echo "...done..."
sleep 3

echo "Run golint..."
golint .
echo "...done..."
sleep 3

echo "Run errcheck..."
errcheck .
echo "...done..."
sleep 3

echo "Run golangci-lint..."
golangci-lint run
echo "...done..."
sleep 3

echo "Run gocyclo..."
gocyclo -top 10  .
echo "...done..."