Short Notes, Hints and Tips

kmag

Handy utility that some people may not even know esists

• comes from package kdeaccessibility
• KDE: Applications > Accessibility
• GNOME, just create a launcher for /usr/bin/kmag
• F2 switches from mouse-mode to selector-window mode
• check out Save Snapshot As.., and Print to PDF

Gimp's Perspective tool

Really neat tool for correcting perspective distortion

• Note: must mouse-click on image (shows grid)
• Tool Options: set preview image + grid, (say) 15 grid lines
  • AND Backward (corrective)
  • clipping probably yes .. but experiment
• drag corners of grid inside image -- will crop
• don't forget to work on a copy of the layer
• remember Gimp online & context help

Wireshark's Flow Graph

Net wizards know this tool .. but look at this neat diagram

(the program formerly known as ethereal)

• Prep Hint: try Statistics > Conversations, [choose something]?, right-click, apply as filter
• Then use Statistics > Flow Graph, Displayed packets
• Note Save As saves a text file (not quite as pretty as gui)
• Consider using kmag to capture & save a snapshot
• Also remember the ability to right click on any packet and choose Follow TCP Stream to see nice payload display.

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