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content/post/2007-07-04-command-line-scanning.markdown

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+---
+author: einar
+categories:
+- Linux
+comments: true
+date: "2007-07-04T21:26:31Z"
+slug: command-line-scanning
+title: Command line scanning
+disable_share: true
+wordpress_id: 269
+---
+
+Recently, I had to do a few scans with my old but trusty BenQ 640BU. Given that I could not use any GUI due to a [long-standing Feisty bug](https://bugs.launchpad.net/bugs/85488), I tried to settle for command line scanning with the scanimage command from [SANE](http://www.sane-project.org). The main problem is that scanimage only saves images in PNM or TIFF formats. I wanted to use JPEG or PNG, but apparently that looked impossible to do.
+
+Instead, I found that  scanimage sends its results to standard output, and also that ImageMagick can accept standard input as source file, it was easy to convert on the fly:
+
+[code lang='c']
+scanimage --format pnm | convert -format png - test.png
+[/code]
+
+"-" tells convert to use the standard input. Another great example  of the power of the command line.