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Added «pdfimages»; first test of multiple indices

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Kenneth John Odle 2026-07-26 12:33:21 -04:00
parent 134c577bdd
commit bbda6f906c
3 changed files with 10 additions and 2 deletions
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2
chapters/ch00-intro.tex
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@ -11,3 +11,5 @@ What follows here is a compendium of Linux commands and various options that I h
\paragraph{``How can I send you corrections or suggestions for future issues?''} My contact information is listed in the ``Impressum'' on page ii.
\paragraph{Filenames} To keep things simple, the input file will always be ``input'' in the example code, and likewise, the output file name will always be ``output''. If a file extension is not required, it will not be included. For example ``input.pdf'' means the input \textit{must} be a pdf file, whereas ``input'' means it can be any type of file the application can handle.
\paragraph{Why \LaTeX{}?} Because \LaTeX{} makes things consistent. It also (usually) makes things easier, but the few times it makes things harder are always learning opportunities and I walk away knowing something I didn't know before. It's fun figuring out how things work.

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chapters/ch01-images.tex
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@ -32,7 +32,11 @@ Doubling the resolution along both axes will increase the file size by an approx
\section{To Extract Images from a PDF File}
\lettrine[findent=0mm]{T}{o} extract images from a pdf file, use the \texttt{pdfimages} command (also from the same package\index{poppler-utils} mentioned in \S \ref{poppler-utils} ).
\lettrine[findent=0mm]{T}{o} extract images from a pdf file, use the \texttt{pdfimages}\index{pdfimages} command (also from the same package\index{poppler-utils} mentioned in \S \ref{poppler-utils} ). As before, the \texttt{-f} flag denotes the first page you want to extract image files from and the \texttt{-l} flag denotes the last page to extract image files from. Omitting them both will extract images from all pages.
By default, images are saved as PBM (for monochrome images), PGM (for grayscale images), or PPM (for color images) files. Use the \texttt{-j} flag to save them as \texttt{jpeg} files or the \texttt{-J} flag to save them as \texttt{jpeg 2000} files.
The \texttt{-list} flag will send a list of image information to \texttt{stdout} including the image file name, the page number, the image dimensions and resolution, the color space type, and the color depth\index[concepts]{color depth}\index[concepts]{bits per component} (i.e., bits per component). If needed, this can redirected to a text file. To generate the list without generating any images, use the \texttt{-listonly} flag.
\section{This is just a test}

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ulc_001.tex
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@ -10,6 +10,7 @@
\checkandfixthelayout % Required if you have altered settings for the memoir class
% Make an index
\makeindex[columns=3, title=Packages Mentioned, intoc]
\makeindex[name=concepts, columns=3, title=Concepts, intoc]
\begin{document}
\pagenumbering{roman}
@ -46,5 +47,6 @@
\input{chapters/ch03-files}
\printindex
\printindex[concepts]
\end{document}