{"version":"1.0","provider_url":"https://hatena.blog","height":"190","width":"100%","url":"https://www.mtioutput.com/entry/cat-input-output","blog_url":"https://www.mtioutput.com/","blog_title":"(O+P)ut","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.mtioutput.com%2Fentry%2Fcat-input-output\" title=\"cat\u30b3\u30de\u30f3\u30c9\u306b\u3066input file is output file\u3068\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u969b\u306e\u30dd\u30a4\u30f3\u30c8 - (O+P)ut\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2019-07-10 09:00:00","categories":["UNIX","UNIX-Linux"],"title":"cat\u30b3\u30de\u30f3\u30c9\u306b\u3066input file is output file\u3068\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u969b\u306e\u30dd\u30a4\u30f3\u30c8","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/m/mtiit/20190708/20190708151205.jpg","type":"rich","author_name":"mtiit","author_url":"https://blog.hatena.ne.jp/mtiit/","description":"\u306f\u3058\u3081\u306b \u5165\u529b\u30d5\u30a1\u30a4\u30eb\u3068\u51fa\u529b\u30d5\u30a1\u30a4\u30eb\u3092\u540c\u3058\u306b\u3059\u308b\u30b3\u30de\u30f3\u30c9\u306f\u907f\u3051\u308b\u3079\u304d\u3067\u3042\u308a\u3001\u4f8b\u3048\u3070\u5b9f\u969b\u306b\u62bc\u4e0b\u3057\u305f\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u3066cat\u30b3\u30de\u30f3\u30c9\u306b\u5931\u6557\u3057\u307e\u3059\u3002 $ cat abc.txt >> abc.txt cat: abc.txt: input file is output file$ cat abc.txt > abc.txt cat: abc.txt: input file is output file\u305f\u3060\u3057\u3001\u4e0a\u66f8\u304d\u3067\u3042\u308b>\u304b\u8ffd\u8a18\u3067\u3042\u308b >>\u3067\u306f\u7d50\u679c\u304c\u5927\u304d\u304f\u5909\u308f\u308a\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u305d\u308c\u3089\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u8aac\u660e\u3057\u307e\u3059\u3002 cat\u30b3\u30de\u30f3\u30c9\u306e\u30d0\u30fc\u30b8\u30e7\u30f3 $ cat --version cat \u2026"}