{"id":4979,"date":"2013-06-03T13:56:31","date_gmt":"2013-06-03T11:56:31","guid":{"rendered":"http:\/\/daniel.haxx.se\/blog\/?p=4979"},"modified":"2013-06-03T13:56:31","modified_gmt":"2013-06-03T11:56:31","slug":"embedded-hacking-contest-2-decoded","status":"publish","type":"post","link":"https:\/\/daniel.haxx.se\/blog\/2013\/06\/03\/embedded-hacking-contest-2-decoded\/","title":{"rendered":"Embedded hacking contest #2, decoded"},"content":{"rendered":"

Okay, so here are the correct answers to the embedded hacking #2 contest<\/a> (click for larger pictures):<\/p>\n

\"The<\/a><\/p>\n

The fact that you get the clues as hexadecimal uppercase ASCII was pretty quickly clear to everybody. I found it interesting to hear how people attacked the problem of decoding the hex into letters. Most people seem to have made a lookup-table fairly soon, and at least one contestant I talked to made a mistake in his table that turned W into X instead! This year’s winner did the conversion completely without a written down table…<\/p>\n

So all the pieces are decoded like this:<\/p>\n

\"The<\/a><\/p>\n

Of course, now a pedant would argue that FORK() isn’t correct, but I decided to use all uppercase just to make the conversion slightly easier. At least I think converting only uppercase ASCII as hex is easier. So the question is “What does fork() return in the child process?”<\/p>\n

The answer to the question is 0 (zero). Short and simple. See fork’s man page<\/a>.<\/p>\n

\"Linus<\/p>\n

After 13 minutes and 20 seconds<\/strong> since I clicked start on the timer, Linus Nielsen Feltzing approached me with a little note with the correct answer and we had a winner!<\/p>\n

The very happy Linus was very disappointed in the previous competition<\/a> when he was very close to winning but was beaten just within seconds by last time’s winner.<\/p>\n

Now, the Chromebook that Enea donated to the winner of the contest was handed over to Linus. (The Samsung Cortex-A15 version.)<\/p>\n","protected":false},"excerpt":{"rendered":"

Okay, so here are the correct answers to the embedded hacking #2 contest (click for larger pictures): The fact that you get the clues as hexadecimal uppercase ASCII was pretty quickly clear to everybody. I found it interesting to hear how people attacked the problem of decoding the hex into letters. Most people seem to … Continue reading Embedded hacking contest #2, decoded<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,14,6],"tags":[361,35,360,270],"class_list":["post-4979","post","type-post","status-publish","format-standard","hentry","category-development","category-linux","category-floss","tag-contest","tag-embedded","tag-enea","tag-foss-sthlm"],"_links":{"self":[{"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/posts\/4979","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/comments?post=4979"}],"version-history":[{"count":15,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/posts\/4979\/revisions"}],"predecessor-version":[{"id":5040,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/posts\/4979\/revisions\/5040"}],"wp:attachment":[{"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/media?parent=4979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/categories?post=4979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/daniel.haxx.se\/blog\/wp-json\/wp\/v2\/tags?post=4979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}