Recipe Ideas (for matt...)

In the following, the 'file' argument is the filename to be processed.
Assumed output redirection to a destination file is omitted for simplicity.
(All commands are single-line — beware of folding in smaller browser windows...)

Change single newlines to spaces -- leave double newlines alone (as paragraphs)

    matt -v '(\n\n)|(\n)' -o '$1$(2 )' file

Discard HTML/XML tags

Uses two passes — removing comments first avoids confusion.

    matt -sav '<!--.*-->'  file | matt -sav '<.*>'

Determine tagnames used in HTML/XML file

    matt '<([^/!][^ >]*)' -o '$1\n' file|sort|uniq

Extract links from HTML

    matt -sai '<a href=\"(.*)\"[^>]*>(.*)</a>' -o '$2: $1\n' file

Generate HTML from plain text

Fixes entities, adds <P> tags at double newlines.

    matt -v '(<)|(>)|(&)|(\n\n)' -o '$(1&lt;)$(2&gt;)$(3&amp;)$(4<p>\n\n)' file

Display UTF-8 characters in a text file as their byte sequences

(append '|sort|uniq' to get a shorter list...)

as octal:
    matt '[\x80-\xffff]' file|od -vAn -b|matt -v '(\n ?)|(012)' -o '$(1 )$(2\n)'

as hex:
    matt '[\x80-\xffff]' file|od -vAn -txC|matt -v '(\n ?)|(0a)' -o '$(1 )$(2\n)'

Find which shared libraries are used by which (assumed) executables

Scans all files in the current directory. (Template is cosmetic, to indent results.)

    matt -8si 'lib[a-z0-9_]*\.so' -o '   $0\n' *

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