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#!/bin/sh cat <<EOF Content-Type: text/html; charset=utf-8 <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Operating System Uptime</title> </head> <body> <h1>Operating System Uptime</h1> <pre>$(uptime)</pre> </body> </html> EOF