{"url":"https://tksmd.hatenablog.com/entry/20090122/p1","version":"1.0","provider_url":"https://hatena.blog","description":"\u304a\u984c : \u300cf.txt \u304b\u3089\u3001\u30e9\u30f3\u30c0\u30e0\u306b 20 \u884c\u629c\u304d\u51fa\u3057\u3001\u8868\u793a\u3059\u308b\u300d bash \u306e\u5834\u5408 l=`wc -l f.txt | awk '{print $1}'` i=1 while [ $i -le 20 ] do idx=$((RANDOM%l)) cat f.txt | head -$idx | tail -1 i=$((i+1)) done \u5c1a\u3001RANDOM \u5909\u6570\u3067\u3059\u304c\u3001\u4e0a\u9650 32767 \u306a\u306e\u3067\u3001\u305d\u308c\u4ee5\u4e0a\u306e\u884c\u6570\u304c\u30d5\u30a1\u30a4\u30eb\u306b\u3042\u308b\u5834\u5408\u306f\u6ce8\u610f\u3002\u4ee5\u4e0b Mac \u3067\u306e man bash \u3088\u308a\u3002 RANDOM Each time this parameter is referenced, a rando\u2026","author_name":"tksmd","published":"2009-01-22 00:00:00","blog_url":"https://tksmd.hatenablog.com/","height":"190","width":"100%","title":" \u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30e9\u30f3\u30c0\u30e0\u306b\u884c\u3092\u62bd\u51fa\u3057\u3066\u8868\u793a\u3057\u305f\u3044","type":"rich","author_url":"https://blog.hatena.ne.jp/tksmd/","provider_name":"Hatena Blog","blog_title":"Bug's Groove","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftksmd.hatenablog.com%2Fentry%2F20090122%2Fp1\" title=\" \u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30e9\u30f3\u30c0\u30e0\u306b\u884c\u3092\u62bd\u51fa\u3057\u3066\u8868\u793a\u3057\u305f\u3044 - Bug&#39;s Groove\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["\u6280\u8853\u5168\u822c","Python","\u5c0f\u30cd\u30bf"],"image_url":null}