json jq 条件输出
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jq Conditional output
提问by clwen
I'm using jqto play with json. I was wondering how to conditionally print something in that.
我正在使用jq来玩 json。我想知道如何有条件地打印一些东西。
Say I am interested in a field call geo. I used the following command and find out there is only one entry whose geois null:
说我对实地考察感兴趣geo。我使用了以下命令，发现只有一个条目geo是null：
% cat all.json | jq '.geo != null' | sort | uniq -c
1 false
6891 true
How can I print out that entry only without printing everything else?
如何仅打印该条目而不打印其他所有内容？
Didn't see something like printcommand in the manual. And this doesn't work: cat all.json | jq 'if .place == null then . end'. jqcomplained about syntax error.
print在手册中没有看到类似命令的内容。这不起作用：cat all.json | jq 'if .place == null then . end'. jq抱怨语法错误。
