我必须努力寻找一切可能的办法,在指挥要求中处理枪匹马, 请看以下法典,看一看如果使用不当,为什么使用单一报价会失败。

# Create Release and Tag commit in Github repository

# returns string with in-place substituted variables 

json=$(cat <<-END
    {
        "tag_name": "${version}", 
        "target_commitish": "${branch}", 
        "name": "${title}", 
        "body": "${notes}", 
        "draft": ${is_draft}, 
        "prerelease": ${is_prerelease} 
    }
END
)

# returns raw string without any substitutions
# single or double quoted delimiter - check HEREDOC specs

json=$(cat <<-!"END"   # or  END  
    {
        "tag_name": "${version}", 
        "target_commitish": "${branch}", 
        "name": "${title}", 
        "body": "${notes}", 
        "draft": ${is_draft}, 
        "prerelease": ${is_prerelease} 
    }
END
)

# prints fully formatted string with substituted variables as follows:

echo "${json}"  
{ 
    "tag_name" : "My_tag", 
    "target_commitish":"My_branch"
    ....
}

http://www.un.org/Depts/DGACM/index_french.htm

# enclosing in single quotes means no variable substitution 
# (treats everything as raw char literals)

echo  ${json}    
${json} 

echo  "${json}"    
"${json}" 

# enclosing in single quotes and outer double quotes causes
# variable expansion surrounded by single quotes(treated as raw char literals).

echo " ${json} " 
 { 
    "tag_name" : "My_tag", 
    "target_commitish":"My_branch"
    ....
} 

www.un.org/Depts/DGACM/index_spanish.htm 说明2:与线路终点站保持距离

• Note the json string is formatted with line terminators such as LF
• or carriage return (if its encoded on windows it contains CRLF )
• using (translate) tr utility from shell we can remove the line terminators if any

# following code serializes json and removes any line terminators 
# in substituted value/object variables too

json=$(echo "$json" | tr -d  
  | tr -d  
  )

# string enclosed in single quotes are still raw literals

echo  ${json}    
${json} 

echo  "${json}"    
"${json}" 

# After CRLF/LF are removed

echo " ${json} " 
 { "tag_name" : "My_tag", "target_commitish":"My_branch" .... } 

说明3:格式

• while manipulating json string with variables, we can use combination of and " such as following, if we want to protect some raw literals using outer double quotes to have in place substirution/string interpolation:

# mixing   and " 

username=admin
password=pass

echo "$username:$password"
admin:pass

echo "$username" : "$password"
admin:pass

echo "$username" [${delimiter}] "$password"
admin[${delimiter}]pass

www.un.org/Depts/DGACM/index_chinese.htm

• Following curl request already removes existing (ie serializes json)

response=$(curl -i 
            --user ${username}:${api_token} 
            -X POST 
            -H  Accept: application/vnd.github.v3+json  
            -d "$json" 
            "https://api.github.com/repos/${username}/${repository}/releases" 
            --output /dev/null 
            --write-out "%{http_code}" 
            --silent
          )

So when using it for command variables, validate if it is properly formatted before using it :)

这些解决办法是很晚才提出的,但我认为,这些解决办法本身比以前的建议(避免援引和教唆的复杂性)更为简单。

    BUCKET_NAME=testbucket
    OBJECT_NAME=testworkflow-2.0.1.jar
    TARGET_LOCATION=/opt/test/testworkflow-2.0.1.jar
    
    # Initial unsuccessful solution
    JSON_STRING= {"bucketname":"$BUCKET_NAME","objectname":"$OBJECT_NAME","targetlocation":"$TARGET_LOCATION"} 
    echo $JSON_STRING 
    
    # If your substitution variables have NO whitespace this is sufficient
    JSON_STRING=$(tr -d [:space:] <<JSON
    {"bucketname":"$BUCKET_NAME","objectname":"$OBJECT_NAME","targetlocation":"$TARGET_LOCATION"}
    JSON
    )
    echo $JSON_STRING 
    
    # If your substitution variables are more general and maybe have whitespace this works
    JSON_STRING=$(jq -c . <<JSON
    {"bucketname":"$BUCKET_NAME","objectname":"$OBJECT_NAME","targetlocation":"$TARGET_LOCATION"}
    JSON
    )
    echo $JSON_STRING 
    
    #... A change in layout could also make it more maintainable
    JSON_STRING=$(jq -c . <<JSON
    {
       "bucketname" : "$BUCKET_NAME",
       "objectname" : "$OBJECT_NAME",
       "targetlocation" : "$TARGET_LOCATION"
    }
    JSON
    )
    echo $JSON_STRING

您可使用<代码>envsubst:

  export VAR="some_value_here"
  echo  {"test":"$VAR"}  | envsubst > json.json

也可以是“模板”文件:

//json.template
{"var": "$VALUE", "another_var":"$ANOTHER_VALUE"}

因此,在你能够做到之后:

export VALUE="some_value_here"
export ANOTHER_VALUE="something_else"
cat  json.template | envsubst > misha.json

Bash will not insert variables into a single-quote string. In order to get the variables bash needs a double-quote string. You need to use double-quote string for the JSON and just escape double-quote characters inside JSON string. Example:

#!/bin/sh

BUCKET_NAME=testbucket
OBJECT_NAME=testworkflow-2.0.1.jar
TARGET_LOCATION=/opt/test/testworkflow-2.0.1.jar

JSON_STRING="{"bucketname":"$BUCKET_NAME","objectname":"$OBJECT_NAME","targetlocation":"$TARGET_LOCATION"}"


echo $JSON_STRING 

如果你有点 no子,并且在全球得到最小安装:

jc() {
    node -p "JSON.stringify(require( minimist )(process.argv), (k,v) => k== _ ?undefined:v)" -- "$@"
}
jc --key1 foo --number 12 --boolean 
    --under_score  abc def  -- white space       
# {"key1":"foo","number":12,"boolean":true,"under_score":"abc def","white space":"   "}

您可以 cur笑或说什么:

curl --data "$(jc --type message --value  hello world! )" 
    --header  content-type: application/json  
    http://server.ip/api/endpoint

注意:

jc --m.room.member @gholk:ccns.io
# {"m":{"room":{"member":"@gholk:ccns.io"}}}

供世界妇女论坛宏观组合使用:

JSON_CONFIG=$( jq -n 
   --arg bucket_name "$BUCKET_NAME" 
   --arg kms_key_arn "$KMS_KEY_ARN" 
    {"s3Destination":{"bucketName":$bucket_name,"kmsKeyArn":$kms_key_arn}} 
)

aws macie2 put-classification-export-configuration --configuration "$JSON_CONFIG"

你们只能发出这样的呼吁,以印刷“智者”。

#!/bin/sh
BUCKET_NAME=testbucket

OBJECT_NAME=testw或kflow-2.0.1.jar

TARGET_LOCATION=/opt/test/testw或kflow-2.0.1.jar

echo  { "bucketName": " "$BUCKET_NAME" ", "objectName": " "$OBJECT_NAME" ", "targetLocation": " "$TARGET_LOCATION" " } 

或

JSON_STRING= { "bucketName": " "$BUCKET_NAME" ", "objectName": " "$OBJECT_NAME" ", "targetLocation": " "$TARGET_LOCATION" " } 
echo $JOSN_STRING

with jq "@sh" we can translate jq string array to bash array:

#!/bin/bash

set -eufo pipefail
#set -x

# $1 should calculate an json array from input
jq_array() {
  jq "$1"
}

# $1 is an array name
# $2 should calculate an json array from input
read_jq_array() {
  eval unset "$1"
  eval "$(jq -r  ([" "$1" =("] + [ "$2"  | @sh ] + [")"]) | join(" ") )"
}

dump_array() {
  printf "[%s]
" "$@"
}

input_string= ["a     b", "2"
new line", "1	2	3"] 

# view the input
jq_array  .  <<< "$input_string"

arr=()

# transform to bash array
read_jq_array arr . <<< "$input_string"

# view the result
dump_array "${arr[@]}"

bash功能read_jq_array par子阵列和val子分配到目标篮子。 所有特殊特性线新行、表格、空间、配额都按预期保持不变。