Code to help with note-link-janitor

insert_filename_as_header.rb

#!/usr/bin/ruby
#
# Inserts the file's name as the first header in the file, if it isn't already there.
# Assumes filename begins with a 14 digit zettelkasten ID.
# Original file saved as filename.bak.
#
# As always, caveat emptor. This code could harm your files, so try it on a backup.
#
Dir.glob('*.md') do |filename|
  puts "working on: #{filename}"
  id_text = nil
  line_cnt = 0
  should_add = false

  File.open('temp.txt', 'w') do |temp|

    File.foreach(filename) do |line|
      line_cnt += 1
      if line_cnt == 1
        if line !~ /# \d{14} .+/
          temp.puts("# " + filename + "\n\n")
        end
        if line =~ /(# \d{14} .+)\.md/
          line = $1
        end
      end
      temp.puts(line)
    end

  end
  File.rename(filename, filename + '.bak')
  File.rename('temp.txt', filename)
end

make_links_numeric_alpha.sh

#!/bin/bash
#
# Converts links in files from [[20200207151300]] A sample link
# to [[20200207151300 A sample link]]
# Original files saved as filename.bak.
#
# As always, caveat emptor. This code could harm your files, so try it on a backup.
#

sed -i.bak -E 's/\[\[([0-9]{14})\]\] (.+)/\[\[\1 \2\]\]/' *.md

make_links_numeric_only.sh

#!/bin/bash
#
# Converts links in files from [[20200207151300 A sample link]] to
# [[20200207151300]] A sample link
# Original files saved as filename.bak.
#
# As always, caveat emptor. This code could harm your files, so try it on a backup.
#

sed -i.bak -E 's/\[\[([0-9]{14}) (.+)\]\]/\[\[\1\]\] \2/' *.md