{"provider_name":"Hatena Blog","description":"history\u30b3\u30de\u30f3\u30c9\u306e\u5c65\u6b74\u3092\u305f\u3069\u308b\u3068\u524d\u306b\u5b9f\u884c\u3057\u305f\u3084\u3064\u3092\u518d\u5b9f\u884c\u3067\u304d\u305f\u308a\u3057\u307e\u3059\u3002 \u4eca\u56de\u306f\u305d\u306e\u756a\u53f7\u3092\u898b\u308b\u65b9\u6cd5\u3067\u3059\u3002 \u5b9f\u969b\u306e\u3068\u3053\u308d $ echo $HISTCMD 513\u8a08\u7b97\u3082\u3067\u304d\u307e\u3059\u3002 $ expr $HISTCMD - 24 505 $ echo $(($HISTCMD+5)) 542 \u30b3\u30de\u30f3\u30c9\u7f6e\u63db(Command Substitution)\u5185\u3067\u306f\u65b0\u898f\u306b\u6570\u5b57\u304c\u4f5c\u3089\u308c\u308b $ echo `echo $HISTCMD` 1 \u524d\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u305f\u3044\u3060\u3051\u306a\u3089 $ echo 123 $ !-1 echo 123 123 \u53c2\u8003\u3082\u3068 man history","categories":["bash"],"blog_url":"https://shuzo-kino.hateblo.jp/","author_url":"https://blog.hatena.ne.jp/shuzo_kino/","version":"1.0","provider_url":"https://hatena.blog","image_url":null,"author_name":"shuzo_kino","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshuzo-kino.hateblo.jp%2Fentry%2F2019%2F09%2F13%2F235751\" title=\"bash\u3067history\u756a\u53f7\u3092\u307f\u308b - Bye Bye Moore\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","blog_title":"Bye Bye Moore","width":"100%","url":"https://shuzo-kino.hateblo.jp/entry/2019/09/13/235751","published":"2019-09-13 23:57:51","height":"190","title":"bash\u3067history\u756a\u53f7\u3092\u307f\u308b"}