tl;dr: A Uniqlo t-shirt from Akamai's "Peace for All" campaign has a base64-encoded bash script printed on the back, complete with a shebang line. After OCR'ing and decoding the string, the author found it's an Easter egg: a shell script that animates a sine-wave loop of "♥PEACE♥FOR♥ALL♥" across the terminal in a cyan-to-orange gradient. Akamai's press release frames the design as a tribute to Linux and the early internet.