///

/// tip

Do this **once**, right after you create the virtual environment.

///

<div class="termy">

```console
$ echo "*" > .venv/.gitignore
```

</div>

/// details | What that command means

* `echo "*"`: will "print" the text `*` in the terminal (the next part changes that a bit)

        public int add2(final int arg1, final int arg2) {
            return arg1 + arg2;
        }

        /**
         * @param arg
         * @return Integer
         */
        public Integer echo(final Integer arg) {
            return arg;
        }

        /**
         *
         */
        public void throwException() {
            throw new IllegalStateException("hoge");
        }

  }

  public void testHash() throws IOException {
    ByteSource byteSource = new TestByteSource("hamburger\n".getBytes(US_ASCII));

    // Pasted this expected string from `echo hamburger | md5sum`
    assertEquals("cfa0c5002275c90508338a5cdb2a9781", byteSource.hash(Hashing.md5()).toString());
  }

  public void testContentEquals() throws IOException {

	// still broken on our builders in 2023. Instead, append the exitcode to
	// the output and parse it from there.
	filter, exitStr := newExitCodeFilter(os.Stdout)
	args += "; echo -n " + exitStr + "$?"

	cmd := adbCmd("exec-out", args)
	cmd.Stdout = filter
	// If the adb subprocess somehow hangs, go test will kill this wrapper
	// and wait for our os.Stderr (and os.Stdout) to close as a result.

pkg syscall (freebsd-386-cgo), const EBADRPC Errno
pkg syscall (freebsd-386-cgo), const ECAPMODE Errno
pkg syscall (freebsd-386-cgo), const ECHO ideal-int
pkg syscall (freebsd-386-cgo), const ECHOCTL ideal-int
pkg syscall (freebsd-386-cgo), const ECHOE ideal-int
pkg syscall (freebsd-386-cgo), const ECHOK ideal-int
pkg syscall (freebsd-386-cgo), const ECHOKE ideal-int
pkg syscall (freebsd-386-cgo), const ECHONL ideal-int

pkg syscall (darwin-386), const ECANCELED = 89
pkg syscall (darwin-386), const ECHILD = 10
pkg syscall (darwin-386), const ECHO = 8
pkg syscall (darwin-386), const ECHOCTL = 64
pkg syscall (darwin-386), const ECHOE = 2
pkg syscall (darwin-386), const ECHOK = 4
pkg syscall (darwin-386), const ECHOKE = 1
pkg syscall (darwin-386), const ECHONL = 16
pkg syscall (darwin-386), const ECHOPRT = 32

				Gname:    "staff",
				ModTime:  time.Unix(1360135598, 0),
			}, nil},
			testWrite{"hello\n", 6, nil},
			testClose{nil},
		},
	}, {
		// This file was produced using GNU tar v1.26:
		//	echo "Slartibartfast" > file.txt
		//	ln file.txt hard.txt
		//	tar -b 1 --format=ustar -c -f hardlink.tar file.txt hard.txt
		file: "testdata/hardlink.tar",
		tests: []testFnc{
			testHeader{Header{

pkg syscall (netbsd-arm64-cgo), const ECHO = 8
pkg syscall (netbsd-arm64-cgo), const ECHOCTL = 64
pkg syscall (netbsd-arm64-cgo), const ECHOCTL ideal-int
pkg syscall (netbsd-arm64-cgo), const ECHOE = 2
pkg syscall (netbsd-arm64-cgo), const ECHOE ideal-int
pkg syscall (netbsd-arm64-cgo), const ECHO ideal-int
pkg syscall (netbsd-arm64-cgo), const ECHOK = 4
pkg syscall (netbsd-arm64-cgo), const ECHOKE = 1

pkg syscall (freebsd-arm64), const ECHO = 8
pkg syscall (freebsd-arm64), const ECHO ideal-int
pkg syscall (freebsd-arm64), const ECHOCTL = 64
pkg syscall (freebsd-arm64), const ECHOCTL ideal-int
pkg syscall (freebsd-arm64), const ECHOE = 2
pkg syscall (freebsd-arm64), const ECHOE ideal-int
pkg syscall (freebsd-arm64), const ECHOK = 4
pkg syscall (freebsd-arm64), const ECHOK ideal-int

pkg syscall (darwin-arm64), const ECHO = 8
pkg syscall (darwin-arm64), const ECHO ideal-int
pkg syscall (darwin-arm64), const ECHOCTL = 64
pkg syscall (darwin-arm64), const ECHOCTL ideal-int
pkg syscall (darwin-arm64), const ECHOE = 2
pkg syscall (darwin-arm64), const ECHOE ideal-int
pkg syscall (darwin-arm64), const ECHOK = 4
pkg syscall (darwin-arm64), const ECHOK ideal-int
pkg syscall (darwin-arm64), const ECHOKE = 1