Digital zines I: PDF - Revision history

Michael Murtaugh at 14:52, 31 January 2020

2020-01-31T14:52:41Z

← Older revision		Revision as of 16:52, 31 January 2020
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			Followed by: [[Digital zines II: HTML and friends]]
	[[Category:Post-Digital Itch]]		[[Category:Post-Digital Itch]]

2020-01-08T23:31:28Z

Installing tools

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	brew install wget imagemagick tesseract-ocr poppler		brew install wget imagemagick tesseract-ocr poppler

			== Getting help on a commandline program ==

			Try running the program with either no options:
			<pre>tesseract</pre>

			or with "--help" or "-h"

			<pre>tesseract --help</pre>

			For more information check the man page:

			<pre>man tesseract</pre>

	== BASH Loops ==		== BASH Loops ==

2020-01-08T23:31:12Z

Getting help on a commandline program

@@ Line 334: / Line 334: @@
 Done.
 </source>
 == Other sources of scanned materials to choose from ==

2020-01-08T23:30:42Z

Running pdfsandwich….

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	</source>		</source>

	== ~~Running pdfsandwich….~~ ==		== pdfsandwich ==

	In the end we didn't use this, but [[pdfsandwich]] is a command that just calls a number of other commands to turn an input pdf (without text information) into a pdf with text (aka searchable). It makes use of:		In the end we didn't use this, but [[pdfsandwich]] is a command that just calls a number of other commands to turn an input pdf (without text information) into a pdf with text (aka searchable). It makes use of:

2020-01-08T23:30:15Z

Try to join 2 pdfs into one (test)

← Older revision		Revision as of 01:30, 9 January 2020
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	01_01.pdf.txt		01_01.pdf.txt

	== ~~Try to join 2~~ pdfs ~~into one~~ (~~test~~) ==		== Joining pdfs (and preserving searchability) ==
	Unforunately using imagemagick to join different pdf files together removes any non-image material (such as tesseracts OCR output). Luckily pdfunite (part of the poppler package) is a program that can join searchable pdfs and preserves this information!		Unforunately using imagemagick to join different pdf files together removes any non-image material (such as tesseracts OCR output). Luckily pdfunite (part of the poppler package) is a program that can join searchable pdfs and preserves this information!

2020-01-08T23:27:41Z

Getting help on a commandline program

← Older revision		Revision as of 01:27, 9 January 2020
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	</source>		</source>

	= Getting help on a commandline program =		== Getting help on a commandline program ==

	Try running the program with either no options:		Try running the program with either no options:
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	<pre>man tesseract</pre>		<pre>man tesseract</pre>


	== Other sources of scanned materials to choose from ==		== Other sources of scanned materials to choose from ==

2020-01-08T23:27:01Z

Getting help on a commandline program

← Older revision		Revision as of 01:27, 9 January 2020
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	Try running the program with either no options:		Try running the program with either no options:
	<pre>~~unpaper~~</pre>		<pre>tesseract</pre>

	or with "--help" or "-h"		or with "--help" or "-h"

	<pre>~~unpaper~~ --help</pre>		<pre>tesseract --help</pre>

	For more information check the man page:		For more information check the man page:

	<pre>man ~~unpaper~~</pre>		<pre>man tesseract</pre>

2020-01-08T23:26:22Z

Running pdfsandwich….

← Older revision		Revision as of 01:26, 9 January 2020
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	== Running pdfsandwich…. ==		== Running pdfsandwich…. ==

	In the end we didn't use this, but [[pdfsandwich]] is a ~~(super) script~~ that calls a number of other commands:		In the end we didn't use this, but [[pdfsandwich]] is a command that just calls a number of other commands to turn an input pdf (without text information) into a pdf with text (aka searchable). It makes use of:

	* imagemagick (convert): to extract images from a source PDF		* imagemagick (convert): to extract images from a source PDF

2020-01-08T23:25:19Z

stdout/stderr/stdin

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	== stdout/stderr/stdin ==		== stdout/stderr/stdin ==

	In addition to shell scripts and command substitutions, creating [[Pipelines]] is another way to make novel workflows by composing multiple tools/commands.		In addition to shell scripts and command substitutions, creating [[Pipelines]] is another way to make novel workflows by composing multiple tools/commands. See also: [[stdout]]/[[stdin]] /[[stderr]]

	* [[stdout]]/[[stdin]] /[[stderr]]		Remember that:
	* >2 Save ~~stderr~~ as...		* > myfile ... Means Save stdout as myfile...
	* > Save ~~stdout~~ as...		* >2 myfile .... Means Save stderr as myfile...

	~~Try~~ using ">2 /dev/null" to hide ~~make~~ the output of wget.		So using ">2 /dev/null" means send stderr to "dev/null" (in other words, don't do anything with it) to hide the output of a program (such as wget).

	== Imagemagick! ==		== Imagemagick! ==

2020-01-08T23:23:07Z

stdout/stderr/stdin

← Older revision		Revision as of 01:23, 9 January 2020
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	== stdout/stderr/stdin ==		== stdout/stderr/stdin ==

			In addition to shell scripts and command substitutions, creating [[Pipelines]] is another way to make novel workflows by composing multiple tools/commands.

	* [[stdout]]/[[stdin]] /[[stderr]]		* [[stdout]]/[[stdin]] /[[stderr]]