油灰终端中的grep和cut命令

Question

I'm trying to cut a specific line from several files. I have about 300 json files.

file structure:
{
"FieldName1": "XXXX",
"FieldName2": "1",
"FieldName3": "XXX",
"FieldName4": "XXX",
"FieldName5": "1",
.
.
.
}
,

 {
"FieldName1": "XXXX",
"FieldName2": "2",
"FieldName3": "XXX",
"FieldName4": "XXX",
"FieldName5": "2",
.
.
.
}

some of the files are written in one row:

{"FieldName1": "XXXX", "FieldName2": "3", "FieldName3": "XXX", "FieldName4": "XXX", "FieldName5": "3"}, {"FieldName1": "XXXX", "FieldName2": "4", "FieldName3": "XXX", "FieldName4": "XXX", "FieldName5": "4"}, ...


}

What i need to get in my output file is just a list of 2 fields from the files :

"FieldName1": "1",
"FieldName2": "1",
"FieldName1": "2",
"FieldName2": "2",
"FieldName1": "3",
"FieldName2": "3",
"FieldName1": "4",
"FieldName2": "4",
.
.
.

Is there an easy way to do so?

Thanks!

Answer 1

For the single line, you can use this gnu awk (do to multiple characters in RS)

awk -v RS='"FieldName' 'NR>1 {sub(/, "/,",");print RS$0}' file
"FieldName1": "XXXX",
"FieldName2": "3",
"FieldName3": "XXX",
"FieldName4": "XXX",

---

For multiple line use grep or awk like this:

awk '/FieldName/' file
"FieldName1": "XXXX",
"FieldName2": "1",
"FieldName3": "XXX",
"FieldName4": "XXX",
"FieldName5": "1",