blocks|key|1587139|text|#!/bin/bash

list=(+http://RESTURL1+http://RESTURL2+)

declare+-A+hypothetical_data=(
++++[http://RESTURL1]='{"foo":"Tiger+Nixon","bar":"Edinburgh"}'
++++[http://RESTURL2]='{"foo":"Garrett+Winters","bar":"Tokyo"}'
)

#+create+the+seed+file
result="result.json"
echo+'{"data":[]}'+>+"$result"

for+url+in+"${list[@]}";+do
++++#+fetch+the+data.
++++json=${hypothetical_data[$url]}
++++#+would+really+do:+json=$(curl+"$url")

++++#+extract+the+name+("foo")+and+location+("bar")+values
++++name=$(+jq+-r+'.foo'+<<<"$json"+)
++++location=$(+jq+-r+'.bar'+<<<"$json"+)

++++jq+--arg+name+"$name"+\
+++++++--arg+loc+"$location"+\
+++++++++'.data+%2B=+[[$name,+$loc]]'+"$result"+%7C+sponge+"$result"

++++#+"sponge"+is+in+the+"moreutils"+package+that+you+may+have+to+install.+
++++#+You+can+also+write+that+line+as:
++++#
++++#+tmp=$(mktemp)
++++#+jq+--arg+name+"$name"+\
++++#++++--arg+loc+"$location"+\
++++#++++++'.data+%2B=+[[$name,+$loc]]'+"$result"+>+"$tmp"+&&+mv+"$tmp"+"$result"
++++#++++++++++++++++++++++++++++++++++++++++++%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E%5E
done|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1587140|最终结果：|unstyled|1587141|$+cat+result.json
{
++"data":+[
++++[
++++++"Tiger+Nixon",
++++++"Edinburgh"
++++],
++++[
++++++"Garrett+Winters",
++++++"Tokyo"
++++]
++]
}|1587142|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>#!/bin/bash

list=( http://RESTURL1 http://RESTURL2 )

declare -A hypothetical_data=(
 [http://RESTURL1]='{"foo":"Tiger Nixon","bar":"Edinburgh"}'
 [http://RESTURL2]='{"foo":"Garrett Winters","bar":"Tokyo"}'
)

# create the seed file
result="result.json"
echo '{"data":[]}' &gt; "$result"

for url in "${list[@]}"; do
 # fetch the data.
 json=${hypothetical_data[$url]}
 # would really do: json=$(curl "$url")

 # extract the name ("foo") and location ("bar") values
 name=$( jq -r '.foo' &lt;&lt;&lt;"$json" )
 location=$( jq -r '.bar' &lt;&lt;&lt;"$json" )

 jq --arg name "$name" \
 --arg loc "$location" \
 '.data += [[$name, $loc]]' "$result" | sponge "$result"

 # "sponge" is in the "moreutils" package that you may have to install. 
 # You can also write that line as:
 #
 # tmp=$(mktemp)
 # jq --arg name "$name" \
 # --arg loc "$location" \
 # '.data += [[$name, $loc]]' "$result" &gt; "$tmp" &amp;&amp; mv "$tmp" "$result"
 # ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
done
</code></pre>

End result:

<pre><code>$ cat result.json
{
 "data": [
 [
 "Tiger Nixon",
 "Edinburgh"
 ],
 [
 "Garrett Winters",
 "Tokyo"
 ]
 ]
}
</code></pre>

blocks|key|796401|text|你真的需要用jq写这个文件吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|796402|list=(+http://RESTURL1+http://RESTURL2+)

exec+>+result.json++++

echo+'['

for+p+in+"${list[@]}"
++++data=$(curl+"$p")
++++echo+"++$(jq+-c+'[.foo,+.bar]'+<<<+"$data"),"
done

echo+']'|code-block|syntax|javascript|796403|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Do you really need to write the file using jq?

<pre><code>list=( http://RESTURL1 http://RESTURL2 )

exec &gt; result.json 

echo '['

for p in "${list[@]}"
 data=$(curl "$p")
 echo " $(jq -c '[.foo, .bar]' &lt;&lt;&lt; "$data"),"
done

echo ']'
</code></pre>

blocks|key|1587191|text|重用Glenn的测试框架，但对整个脚本只调用一次jq：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1587192|list=(+http://RESTURL1+http://RESTURL2+)

declare+-A+hypothetical_data=(
++++[http://RESTURL1]='{"foo":"Tiger+Nixon","bar":"Edinburgh"}'
++++[http://RESTURL2]='{"foo":"Garrett+Winters","bar":"Tokyo"}'
)

for+url+in+"${list[@]}";+do
++echo+"${hypothetical_data[$url]}"++#+or+curl+"$url"
done+%7C+jq+-n+'{"data":+[inputs+%7C+[.foo,+.bar]]}'|code-block|syntax|javascript|1587193|entityMap^0|O|2|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Reusing Glenn's test framework, but calling <code>jq</code> only once for the entire script:

<pre><code>list=( http://RESTURL1 http://RESTURL2 )

declare -A hypothetical_data=(
 [http://RESTURL1]='{"foo":"Tiger Nixon","bar":"Edinburgh"}'
 [http://RESTURL2]='{"foo":"Garrett Winters","bar":"Tokyo"}'
)

for url in "${list[@]}"; do
 echo "${hypothetical_data[$url]}" # or curl "$url"
done | jq -n '{"data": [inputs | [.foo, .bar]]}'
</code></pre>

I want to produce json file with structure like this:

<pre><code>{
 "data": [
 [
 "Tiger Nixon",
 "Edinburgh"
 ],
 [
 "Garrett Winters",
 "Tokyo"
 ]
 ]
}
</code></pre>

Here is my bash script:

<pre><code>list=( http://RESTURL1 http://RESTURL2 )

jq -n .data[] &gt; result.json ## -&gt; (create empty array data)

for p in $list

VAR1=$(curl $p | jq -r .foo ) ## -&gt; (Tiger Nixon)
VAR2=$(curl $p | jq -r .bar ) ## -&gt; (Edinburgh)

cat result.json | jq -n --arg a "$VAR1" --arg b "$VAR2" .data["$a","$b"] &gt;&gt; results.json ## -&gt; (add Tiger Nixon and Edinburgh to .data array)

done
</code></pre>

Script is selfexplaining. Except jq part. I dont know how to handle jq to create json file.

Basically I want to iterate over list of urls, populate 2 variables and push it to results.json file as entry/per iteration.

Thanks

jq create array and append entry to it

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想生成如下结构的json文件：{  "data": [    [      "Tiger Nixon",      "Edinburgh"    ],    [      "Garrett Winters",      "Tokyo"    ]  ]}下面是我的bash脚本：list=( http://RESTURL...

问jq创建数组并向其追加条目
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