julia> x = 1 + 2
3

julia> function greet(name)
           println("Hello, $name!")
       end
greet (generic function with 1 method)

julia> greet("World")
Hello, World!

help?> sin
search: sin sinc sind sinh sign asin sqrt using asinh asind isnan isinf

  sin(x)

  Compute sine of x, where x is in radians.

shell> ls -la
total 8
drwxr-xr-x  3 user  staff   96 Jan 12 10:00 .
drwxr-xr-x  5 user  staff  160 Jan 12 10:00 ..
-rw-r--r--  1 user  staff  256 Jan 12 10:00 file.txt

pkg> status
Status `~/Project.toml`
  [7876af07] Highlights v0.1.0 `..`

julia> s = """
       line1
       line2
       """
"line1\nline2\n"
