I got the white one and there is a bash + base64 code behind it and i got curious, and on their website they said
On the back of the T-shirt is real code. It’s a reference to Linux, the open-source language of the internet.
With the help of OCR and 2 hours of my time I somehow manage got a usable base64 code
eval "$(base64 -d <<<'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')"
Oh and there is comments in the base 64 code as well but I just gonna leave the ocr text here.
#!/bin/bash eval "$(base64 -d <<<'IyEvYmluL2Jhc2gKCiMgQ29uZ3Jhd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')"PEACE FOR ALL
I should listen to my lecture instead of doing this
I just scanned my t-shirt and had some OCR issues and stumbled over this gist. Thanks a lot for taking the time!