Update cheatsheets

linux/rpicam-jpeg

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# rpicam-jpeg
+
+> Capture and store a JPEG image using a Raspberry Pi camera.
+> More information: <https://www.raspberrypi.com/documentation/computers/camera_software.html#rpicam-jpeg>.
+
+- Capture an image and name the file:
+
+`rpicam-jpeg -o {{path/to/file.jpg}}`
+
+- Capture an image with set dimensions:
+
+`rpicam-jpeg -o {{path/to/file.jpg}} --width {{1920}} --height {{1080}}`
+
+- Capture an image with an exposure of 20 seconds and a gain of 150%:
+
+`rpicam-jpeg -o {{path/to/file.jpg}} --shutter 20000 --gain 1.5`