CODEWITHSUNDEEP
jsonbashawksed
samdunne
samdunne

Reputation: 316

Find and replace for JSON with sed or awk

So I need to be able to inject a value into JSON using sed or awk (preferably on one line) and I cannot install any external libraries to help me.

An example of the json is something like {"version":"0.5363"}

I'd need to be able to inject a new value for version.

Any help would be greatly appreciated.

Upvotes: 11

Views: 12409

Answers (2)

juanmirocks
juanmirocks

Reputation: 6171

We can use \s* to match any whitespace between fields, which is irrelevant in JSON:

$ echo '{ "version": "0.5363" }' | sed 's/\s*\("version"\s*:[^"]*\)\s*\"[^"]*\"/\1\"newvalue\"/g'

{ "version": "newvalue" }

Upvotes: 0

Avinash Raj
Avinash Raj

Reputation: 174696

You could try the below sed command,

$ echo '{"version":"0.5363"}' | sed 's/\({"version":"\)[^"]*\("}\)/\1newvalue\2/g'
{"version":"newvalue"}

In the above sed command, replace the newvalue with value you want. Add inline edit option -i to save the changes made.

sed -i 's/regex/replacement/g' file

Upvotes: 9

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