On 25th October 2011
In System Administration
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dd if=/dev/zero of=ashish.img bs=1M count=100
Testing write speed of your server,
eg. bs=1M -> 1M block size
count=100 -> 100 MB total size
/dev/zero -> writing blank
ashish.img -> output as ashish.img of that 100MB file.
29th April 2019
steganography & exiftool
hydra [by example]
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