bash 需要使用 sed 更改 json 文件的值
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need to change values of json file using sed
提问by Shachar Hamuzim Rajuan
I need to change values of JSON file using sed,
我需要使用 sed 更改 JSON 文件的值，
I saw a lot of people suggesting using jq, python, or Perl.
我看到很多人建议使用 jq、python 或 Perl。
But I'm working inside a container and I want it to be as simple as possible so only sed is the needed solution for me.
但是我在一个容器内工作，我希望它尽可能简单，所以只有 sed 是我需要的解决方案。
the JSON file is:
JSON 文件是：
{
"useCaseName" : "rca",
"algorithm" : "log-clustering-train",
"mainClass" : "com.hp.analytics.logclustering.MainTrainer",
"applicationJar" : "log-clustering-train-1.0.0-SNAPSHOT-jar-with-dependencies.jar",
"conf" : {
"spark.driver.memory" : "3gb",
"spark.executor.memory" : "9gb",
"spark.executor.userClassPathFirst" : "true",
"spark.cores.max": "8"
},
"schedule" : {
"period" : "10",
"timeUnit" : "hours",
"timeoutPeriodSeconds" : "10800"
}
}
And I want to change 4 values inside it:
我想更改其中的 4 个值：
"spark.driver.memory" : "1gb",
"spark.driver.memory" : "1gb",
"spark.executor.memory" : "1gb",
"spark.executor.memory": "1gb",
"spark.cores.max" :"1"
“spark.cores.max”：“1”
"period" : "15",
“期间”：“15”，
So the output will be:
所以输出将是：
{
"useCaseName" : "rca",
"algorithm" : "log-clustering-train",
"mainClass" : "com.hp.analytics.logclustering.MainTrainer",
"applicationJar" : "log-clustering-train-1.0.0-SNAPSHOT-jar-with-dependencies.jar",
"conf" : {
"spark.driver.memory" : "1gb",
"spark.executor.memory" : "1gb",
"spark.executor.userClassPathFirst" : "true",
"spark.cores.max": "1"
},
"schedule" : {
"period" : "15",
"timeUnit" : "hours",
"timeoutPeriodSeconds" : "10800"
}
}
回答by skr
For sed use the following
对于 sed 使用以下内容
sed -i '/spark.driver.memory/c\ \"spark.driver.memory\" : \"1gb\",' file.txt
sed -i '/spark.executor.memory/c\ \"spark.executor.memory\" : \"1gb\",' file.txt
sed -i '/spark.cores.max/c\ \"spark.cores.max\" : \"1\",' file.txt
sed -i '/period/c\ \"period\" : \"15\",' file.txt
回答by RomanPerekhrest
For that time when you'll be ready for a proper solution using jqtool:
到那时，您将准备好使用jq工具获得正确的解决方案：
jq '.conf |= . + {"spark.driver.memory":"1gb","spark.executor.memory":"1gb","spark.cores.max":"1"} | .schedule |= . + {period:"15"}' file
The output:
输出：
{
"useCaseName": "rca",
"algorithm": "log-clustering-train",
"mainClass": "com.hp.analytics.logclustering.MainTrainer",
"applicationJar": "log-clustering-train-1.0.0-SNAPSHOT-jar-with-dependencies.jar",
"conf": {
"spark.driver.memory": "1gb",
"spark.executor.memory": "1gb",
"spark.executor.userClassPathFirst": "true",
"spark.cores.max": "1"
},
"schedule": {
"period": "15",
"timeUnit": "hours",
"timeoutPeriodSeconds": "10800"
}
}
回答by RavinderSingh13
try following awk and let me know if this helps you.
尝试关注 awk，如果这对您有帮助，请告诉我。
awk '{
match(sed 's/"spark.driver.memory" : "[0-9]gb"/"spark.driver.memory" : "1gb"/;s/"spark.executor.memory" : "[0-9]gb"/"spark.executor.memory" : "1gb"/;s/"spark.cores.max": "[0-9]"/"spark.cores.max" :"1"/;s/"period" : "[0-9]*"/"period" : "15"/' Input_file
,/^[[:space:]]+/);
val=substr(##代码##,RSTART,RLENGTH)
}
/spark.driver.memory/ || /spark.executor.memory/{
sub(/[0-9]+/,"1",);
}
/spark.cores.max/{
sub(/[0-9]+/,"1",)
}
/period/{
sub(/[0-9]+/,"15",)
}
{
printf("%s%s\n",!/^ +/?val:"",##代码##)
}
' Input_file
If you want to save the output of this into same Input_file, then you could save above code's output into a temp file and then save it to Input_file again.
如果要将其输出保存到同一个 Input_file 中，则可以将上述代码的输出保存到临时文件中，然后再次将其保存到 Input_file 中。
EDIT1:a sed solution too now.
EDIT1：现在也是一个 sed 解决方案。
##代码##If happy with above code's result then use sed -i option to save into the Input_file then.
如果对上述代码的结果感到满意，则使用 sed -i 选项保存到 Input_file 中。
