如何在Bash/Python中为相邻大括号间添加逗号（排除最后一处）

你需要把连续的JSON对象用逗号分隔开，之前的sed命令写法有误，所以没效果。直接用下面的sed命令就能搞定：

sed 's/}{/},{/g'

具体操作示例 #

• 输入内容：

{"id": "1", "eventName": "Pause", "eventTime": "2022-11-02T21:00:42Z"}{"id": "2", "eventName": "Resume", "eventTime": "2022-11-03T14:18:47Z"}{"id": "7", "eventName": "Pause", "eventTime": "2022-11-02T18:15:48Z"}{"id": "3", "eventName": "Resume", "eventTime": "2022-11-03T08:01:19Z"}{"id": "4", "eventName": "Resume", "eventTime": "2022-11-03T06:34:42Z"}{"id": "6", "eventName": "Pause", "eventTime": "2022-11-02T23:01:07Z"}{"id": "5", "eventName": "Resume", "eventTime": "2022-11-03T03:01:05Z"}

• 执行命令后输出：

{"id": "1", "eventName": "Pause", "eventTime": "2022-11-02T21:00:42Z"},{"id": "2", "eventName": "Resume", "eventTime": "2022-11-03T14:18:47Z"},{"id": "7", "eventName": "Pause", "eventTime": "2022-11-02T18:15:48Z"},{"id": "3", "eventName": "Resume", "eventTime": "2022-11-03T08:01:19Z"},{"id": "4", "eventName": "Resume", "eventTime": "2022-11-03T06:34:42Z"},{"id": "6", "eventName": "Pause", "eventTime": "2022-11-02T23:01:07Z"},{"id": "5", "eventName": "Resume", "eventTime": "2022-11-03T03:01:05Z"}

为什么之前的命令无效？ #

你写的sed 's/"\[\[}{\]\]\\+"/","/g'存在语法错误：

• 多余的双引号包裹正则，导致匹配逻辑混乱
• 错误使用转义字符，既没必要也不符合基础sed的语法规则
• 正则根本匹配不到}{这个相邻符号组合

内容的提问来源于stack exchange，提问作者anup