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Editorial Team
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Asked: 2026-06-09T21:08:32+00:00

I have this: #!/bin/bash # Open up the document read -d ” html <<-

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I have this:

#!/bin/bash

# Open up the document
read -d '' html <<- EOF
<!DOCTYPE html>
<html>
  <head>
    <title>...</title>
    <meta name="...">
    <link rel="stylesheet" type="text/css" href="style.css" />
  </head>
  <body>
EOF

#Overwrite the old file with a new one
echo "$html" > index.html

# Convert markdown to HTML
`cat README.md | marked --gfm >> index.html`

# Put the converted markdown into the HTML
read -d '' html <<- EOF
  </body>
</html>
EOF

# Save the file
echo "$html" >> index.html

But what I’d like is a single write instead Basically, in the first EOF i’d have the </html></body> too, and in between the <body> tags I’d have like {{CONTENT}} to be replaced with cat README.md | marked --gfm like:

read -d '' html <<- EOF
    <!DOCTYPE html>
    <html>
      <head>
        <title>...</title>
        <meta name="...">
        <link rel="stylesheet" type="text/css" href="style.css" />
      </head>
      <body>
      {{CONTENT}}
      </body>
    </html>
    EOF

I tried over and over with the sed command, but I think I’m doing something wrong and I read there’s issues when the file contents to search thru have slashes in it. How could I implement the sed command here?

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1 Answer

  1. Editorial Team

    I think you can do this using a single call to cat, using command substitution to insert the read-me in the middle:

    cat << EOF > index.html
<!DOCTYPE html>
<html>
  <head>
    <title>...</title>
    <meta name="...">
    <link rel="stylesheet" type="text/css" href="style.css" />
  </head>
  <body>
  $(marked --gfm < README.md)
  </body>
</html>
EOF

    Another option might be to use printf, replacing the {{CONTENT}} placeholder with a simple format string.

    read -d '' -r template <<EOF
<!DOCTYPE html>
<html>
<head>
<title>...</title>
<meta name="...">
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
%s
</body>
</html>
EOF

printf "$template" "$(marked --gfm < README.md)"
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