{"description":"\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u3061\u3087\u3063\u3068\u3057\u305f\u8a08\u7b97\u3057\u305f\u3044\u6642\u306e\u30e1\u30e2 \u3044\u304f\u3064\u304b\u65b9\u6cd5\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u4e0b\u8a18\u304c\u7c21\u5358\u4e8c\u91cd\u30ab\u30c3\u30b3\u3092\u3064\u3051\u308b\u3068\u3067\u304d\u308b\u3002 XXX=\"90\" YYY=$((${XXX}+10)) echo ${YYY} # <-- 100 \u4ed6\u306b\u3082expr \u3067\u3082\u3067\u304d\u308b\u3051\u3069 \u639b\u3051\u7b97\u306f\u30c0\u30d6\u30eb\u30af\u30aa\u30fc\u30c8(\"*\") \u3064\u3051\u306a\u3044\u3068\u3060\u3081\u3068\u304b\u5236\u7d04\u304c\u3042\u308b\u3002 XXX=\"90\" ZZZ=`expr ${XXX} + 20` echo ${ZZZ} #<--- 110 QQQ=`expr ${XXX} \"*\" 3` echo ${QQQ} #<---270 \u3069\u3061\u3089\u3082\u5909\u6570(XXX)\u304c\u6587\u5b57\u5217\u3001int\u578b\u3067\u3082\u95a2\u4fc2\u306a\u304f\u8a08\u7b97\u3067\u304d\u308b\u306e\u304c\u3044\u3044\u306d\u3002www.atm\u2026","categories":["linux","shell","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"version":"1.0","blog_url":"https://blog.suganoo.net/","provider_url":"https://hatena.blog","image_url":"https://images-fe.ssl-images-amazon.com/images/I/51QHNmyaoxL._SL160_.jpg","blog_title":"S\u6c0f\u306f\u305f\u307e\u306bblog\u3092\u66f4\u65b0\u3057\u3066\u307e\u3059","url":"https://blog.suganoo.net/entry/2018/06/26/181542","published":"2018-06-26 18:15:42","provider_name":"Hatena Blog","author_name":"suganoo","title":"\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8\u5185\u3067\u8a08\u7b97\u51e6\u7406\u3057\u305f\u3044","author_url":"https://blog.hatena.ne.jp/suganoo/","width":"100%","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.suganoo.net%2Fentry%2F2018%2F06%2F26%2F181542\" title=\"\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8\u5185\u3067\u8a08\u7b97\u51e6\u7406\u3057\u305f\u3044 - S\u6c0f\u306f\u305f\u307e\u306bblog\u3092\u66f4\u65b0\u3057\u3066\u307e\u3059\" 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"}