ttyplot: add page (#6679)

pages/linux/ttyplot.md

@@ -0,0 +1,20 @@
+# ttyplot
+
+> A realtime plotting utility for the command line with data input from stdin.
+> More information: <https://github.com/tenox7/ttyplot>.
+
+- Plot the values `1`, `2` and `3` (`cat` prevents ttyplot to exit):
+
+`{ echo {{1 2 3}}; cat } | ttyplot`
+
+- Set a specific title and unit:
+
+`{ echo {{1 2 3}}; cat } | ttyplot -t {{title}} -u {{unit}}`
+
+- Use a while loop to continuously plot random values:
+
+`{ while {{true}}; do echo {{$RANDOM}}; sleep {{1}}; done } | ttyplot`
+
+- Parse the output from `ping` and visualize it:
+
+`ping {{8.8.8.8}} | sed -u '{{s/^.*time=//g; s/ ms//g}}' | ttyplot -t "{{ping to 8.8.8.8}}" -u {{ms}}`