bash jq中的转义引号
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Escape quotes in jq
提问by Mazzy
I've the following two bash lines
我有以下两条 bash 行
TMPFILE="$(mktemp)" || exit 1
< package.json jq '. + {"foo":'"${BOO}"'}' > "$TMPFILE"
but I get the following error:
但我收到以下错误：
jq: error: syntax error, unexpected '}' (Unix shell quoting issues?) at <top-level>, line 1:
. + {"foo":}
jq: 1 compile error
any idea how to escape properly that part by having the double quote there to mute the shellcheck error
任何想法如何通过在那里使用双引号来消除 shellcheck 错误来正确转义该部分
回答by Tom Fenech
Just use a variable and save yourself the hassle:
只需使用变量即可省去麻烦：
< package.json jq --arg b "$BOO" '. + { foo: $b }'
--arg b "$BOO"creates a variable $bthat you can use inside jq, without having to deal with quoting issues.
--arg b "$BOO"创建一个$b可以在 inside 使用的变量jq，而无需处理引用问题。
That said, the reason that your attempt was failing was that you were missing some literal double quotes:
也就是说，您的尝试失败的原因是您缺少一些文字双引号：
< package.json jq '. + { foo: "'"$BOO"'" }'
The extra double quotes insideeach of the the single-quoted parts of the command are needed, as the other ones are consumed by the shell before the command string is passed to jq.
额外的双引号内的每个命令的单引号的零件都需要，因为其他的人被shell命令字符串传递给之前消耗jq。
This will still fail in the case that the shell variable contains any quotes, so the first approach is the preferred one.
如果 shell 变量包含任何引号，这仍然会失败，因此第一种方法是首选方法。
