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pasmon
Asked: 2020-01-24 11:04:40 +0800 CST

Usage of sed(stream editor)

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I have a file containing text 

**This is bold text** 
*This is italicized text*

I wish to convert the above into

  \textbf{This is bold text}
  \emph{This is italicized text}

using stream editor(sed). Kindly guide me on this matter.

I have used this code 

sed -i 's/\*\*\(.*\)\*\*/\\textbf{\1}/g' SampleCode

and it works like a charm

Thanks from Google group

latex sed markdown

2 Answers

  1. It looks like you are trying to invent new Pandoc.
    Instead:

    1. Install Pandoc:

      sudo apt-get install pandoc

    2. Create input file:

      $ cat << EOF > file.md
**This is bold text** 
*This is italicized text*
EOF

    3. Run conversion from Markdown to LaTeX:

      pandoc file.md -o file.tex

    4. Enjoy the result:

      $ cat file.tex 
\textbf{This is bold text} \emph{This is italicized text}
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  2. This is the simple answer:

    echo '**This is bold text**' | sed -r 's/\*\*(.+)\*\*/\\textbf{\1}/'
echo '*This is italicized text*' | sed -r 's/\*(.+)\*/\\emph{\1}/'

    Most important thing is to understand regular expressions. There are several online regex testers where you can experiment with regex.

    Here is a very good explanation of sed. https://www.grymoire.com/Unix/Sed.html

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