{"author_url":"https://blog.hatena.ne.jp/zenpou/","blog_url":"https://zenpou.hatenadiary.org/","description":"\u6614\u3001\u30b7\u30a7\u30eb\u3092\u899a\u3048\u305f\u7d4c\u7def\u3092\u8a73\u3057\u76ee\u306b\u66f8\u3044\u3066\u307f\u308b\u3068\u304b \u66f8\u3044\u305f\u4e8b\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u30b7\u30a7\u30eb\u306f\u5965\u304c\u6df1\u3044\uff65\uff65\uff65\uff65\uff65\uff65\u3002 \u3068\u8a00\u3046\u304b\u4e00\u5ea6\u6700\u521d\u304b\u3089\u52c9\u5f37\u3057\u305f\u65b9\u304c\u3044\u3044\u306e\u304b\u3082\u3057\u308c\u3093\u3002 bash\u3084zsh\u3068\u304b\u306b\u3082eval\u304c\u3042\u308b\u3093\u3067\u3059\u306d\u3002 eval \u6587\u5b57\u5217\u3067\u8a55\u4fa1\u3057\u3066\u304f\u308c\u308b\u307f\u305f\u3044 \u3068\u3044\u3046\u308f\u3051\u3067\u3053\u3093\u306a\u6587\u304c\u4f5c\u308c\u308b\u3002 TEST=1 DATA_1=\"B\" eval echo \\$DATA_$TEST\\$DATA_$TEST \u304c \\$\u306f$\u306b\u306a\u308a\u3001$TEST\u306f1\u3068\u306a\u3063\u3066 $DATA_1\u306b\u306a\u308b\u307f\u305f\u3044\u3002 \u3053\u3046\u3059\u308b\u3068\u3001echo $DATA_1\u3068\u306a\u308a\u3001 B\u304c\u8868\u793a\u3055\u308c\u308b\u3002 \u914d\u5217\u3068\u304b\u3082\u3053\u308c\u3067\u5b9f\u73fe\u51fa\u6765\u307e\u3059\u306d\u3002","type":"rich","width":"100%","provider_url":"https://hatena.blog","image_url":null,"version":"1.0","categories":["Linux"],"provider_name":"Hatena Blog","height":"190","blog_title":"zenpou\u306e\u65e5\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fzenpou.hatenadiary.org%2Fentry%2F20081001%2F1222868069\" title=\"\u30b7\u30a7\u30eb\u306beval\u304c\u3042\u3063\u305f\uff01 - zenpou\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://zenpou.hatenadiary.org/entry/20081001/1222868069","author_name":"zenpou","published":"2008-10-01 22:34:29","title":"\u30b7\u30a7\u30eb\u306beval\u304c\u3042\u3063\u305f\uff01"}