Update cheatsheets

linux/gs

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# gs
+
+> GhostScript is a PDF and PostScript interpreter.
+> More information: <https://manned.org/gs>.
+
+- To view a file:
+
+`gs -dQUIET -dBATCH {{file.pdf}}`
+
+- Reduce PDF file size to 150 dpi images for reading on a e-book device:
+
+`gs -dNOPAUSE -dQUIET -dBATCH -sDEVICE=pdfwrite -dPDFSETTINGS=/ebook -sOutputFile={{output.pdf}} {{input.pdf}}`
+
+- Convert PDF file (pages 1 through 3) to an image with 150 dpi resolution:
+
+`gs -dQUIET -dBATCH -dNOPAUSE -sDEVICE=jpeg -r150 -dFirstPage={{1}} -dLastPage={{3}} -sOutputFile={{output_%d.jpg}} {{input.pdf}}`
+
+- Extract pages from a PDF file:
+
+`gs -dQUIET -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile={{output.pdf}} {{input.pdf}}`
+
+- Merge PDF files:
+
+`gs -dQUIET -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile={{output.pdf}} {{input1.pdf}} {{input2.pdf}}`
+
+- Convert from PostScript file to PDF file:
+
+`gs -dQUIET -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile={{output.pdf}} {{input.ps}}`