C:\Program Files (x86)\Arduino\hardware\tools\avr\bin>avrdude -C ..\etc\avrdude.
conf -p m8 -c arduino -P com4 -b 19200 -U flash:w:usbasp.atmega8.2011-05-28.hex

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e9307 (probably m8)
avrdude: NOTE: "flash" memory has been specified, an erase cycle will be perform
ed
To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: reading input file "usbasp.atmega8.2011-05-28.hex"
avrdude: input file usbasp.atmega8.2011-05-28.hex auto detected as Intel Hex
avrdude: writing flash (4700 bytes):

Writing | ################################################## | 100% 7.04s

avrdude: 4700 bytes of flash written
avrdude: verifying flash memory against usbasp.atmega8.2011-05-28.hex:
avrdude: load data flash data from input file usbasp.atmega8.2011-05-28.hex:
avrdude: input file usbasp.atmega8.2011-05-28.hex auto detected as Intel Hex
avrdude: input file usbasp.atmega8.2011-05-28.hex contains 4700 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 3.59s

avrdude: verifying ...
avrdude: 4700 bytes of flash verified

avrdude: safemode: Sorry, reading back fuses was unreliable. I have given up and
exited programming mode

avrdude done. Thank you.