title: syntax error near unexpected token `$'do\r''
body: <p>Can anyone tell me what's wrong with my program pls? It seems correct to me? Tx</p>
  
  <p>Program:</p>
  
  <pre><code>foo = "https://www.cs.cmu.edu/~rwh/courses/hott/notes/notes_week"
  bar = "https://www.cs.cmu.edu/~rwh/courses/hott/notes/notes_week"
  for i in {1..12} 
  do
      foo = $bar
      foo+="$i"+".pdf"
      wget foo
  done
  </code></pre>
  
  <p>Input:</p>
  
  <pre><code>PS E:\book&gt; wsl ./s.sh
  </code></pre>
  
  <p>Output:</p>
  
  <pre><code>./s.sh: line 1: foo: command not found
  ./s.sh: line 2: bar: command not found
  ./s.sh: line 4: syntax error near unexpected token `$'do\r''
  '/s.sh: line 4: `do
  </code></pre>