/usr/share/fritzing/sketches/ is in fritzing-data 0.6.3b+dfsg-3.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/fritzing/sketches/core/
/usr/share/fritzing/sketches/core/555TouchSwitch.fz
/usr/share/fritzing/sketches/core/AnalogInputFSR.fz
/usr/share/fritzing/sketches/core/AnalogInputOutput.fz
/usr/share/fritzing/sketches/core/AnalogInputPot.fz
/usr/share/fritzing/sketches/core/AnalogInputThermistor.fz
/usr/share/fritzing/sketches/core/AnalogInputToServo.fz
/usr/share/fritzing/sketches/core/Arduino-no-FTDI.fz
/usr/share/fritzing/sketches/core/ArduinoISP.fz
/usr/share/fritzing/sketches/core/Barebones Arduino (stripboard).fz
/usr/share/fritzing/sketches/core/Blink-SMD.fz
/usr/share/fritzing/sketches/core/Blink.fz
/usr/share/fritzing/sketches/core/Button-SMD.fz
/usr/share/fritzing/sketches/core/Button.fz
/usr/share/fritzing/sketches/core/Curvy-Parking-Assistant.fz
/usr/share/fritzing/sketches/core/DC_motor_control.fz
/usr/share/fritzing/sketches/core/Knock.fz
/usr/share/fritzing/sketches/core/LiquidCrystalDisplay.fz
/usr/share/fritzing/sketches/core/Loop-SMD.fz
/usr/share/fritzing/sketches/core/Loop.fz
/usr/share/fritzing/sketches/core/Melody.fz
/usr/share/fritzing/sketches/core/MidiDrumKit.fz
/usr/share/fritzing/sketches/core/Op-amp.fz
/usr/share/fritzing/sketches/core/Optocoupler.fz
/usr/share/fritzing/sketches/core/Parking-Assistant.fz
/usr/share/fritzing/sketches/core/Photocell.fz
/usr/share/fritzing/sketches/core/RGB-LED.fz
/usr/share/fritzing/sketches/core/Relay.fz
/usr/share/fritzing/sketches/core/Shift_Register.fz
/usr/share/fritzing/sketches/core/Shift_Register_double_sided.fz
/usr/share/fritzing/sketches/core/Stepper_Motor.fz
/usr/share/fritzing/sketches/core/Stepper_Motor_double_sided.fz
/usr/share/fritzing/sketches/core/TiltSwitch.fz
/usr/share/fritzing/sketches/core/TouchSwitch.fz
/usr/share/fritzing/sketches/core/TrafficLight.fz
/usr/share/fritzing/sketches/core/VirtualColorMixer.fz
/usr/share/fritzing/sketches/core/VirtualColorMixer_double_sided.fz
/usr/share/fritzing/sketches/core/VoltageRegulator_7800series.fz
/usr/share/fritzing/sketches/core/VoltageRegulator_with_switch.fz
/usr/share/fritzing/sketches/core/Window_Alarm.fz
/usr/share/fritzing/sketches/core/color-fader.fz
/usr/share/fritzing/sketches/core/npnPowerTransistor.fz
/usr/share/fritzing/sketches/core/treeduino.fz
/usr/share/fritzing/sketches/index.xml