Shell Script String extraction

Question

I'm getting string from some service something like this,

{"statusCode":200,"statusText":"OK","responseEntity":{"authMethod":"Bearer","encodedHeader":"SCBjYjA5MTEtNTFjZi00ZTBjLWFmN2UtMzFhDTYzYzA3EjFk","expiresDate":"2017-10-16T14:58:24.697Z"}}

I want to extract encodedHeader value which

SCBjYjA5MTEtNTFjZi00ZTBjLWFmN2UtMzFhDTYzYzA3EjFk

I tried sed with version I know but no luck. any help on this

Akshay Hegde · Accepted Answer · 2017-10-13 14:52:47Z

2

If you have GNU awk then

awk 'match($0,/"encodedHeader":"([^"]*)"/,arr){print arr[1]}' <<<"$line"

Test Results:

$ line='{"statusCode":200,"statusText":"OK","responseEntity":{"authMethod":"Bearer","encodedHeader":"SCBjYjA5MTEtNTFjZi00ZTBjLWFmN2UtMzFhDTYzYzA3EjFk","expiresDate":"2017-10-16T14:58:24.697Z"}}';
$ awk 'match($0,/"encodedHeader":"([^"]*)"/,arr){print arr[1]}' <<<"$line"
SCBjYjA5MTEtNTFjZi00ZTBjLWFmN2UtMzFhDTYzYzA3EjFk

answered Oct 13, 2017 at 14:52

Akshay Hegde

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1 Comment

z atef Over a year ago

Beginner I would recommend that you use @3161993 solution +1 :) . You don't have to worry about he number of fields being changed.

Patrick Trentin · Accepted Answer · 2017-10-13 17:12:50Z

0

Here is one way to do it using AWK.

~$ myline={"statusCode":200,"statusText":"OK","responseEntity":{"authMethod":"Bearer","encodedHeader":"SCBjYjA5MTEtNTFjZi00ZTBjLWFmN2UtMzFhDTYzYzA3EjFk","expiresDate":"2017-10-16T14:58:24.697Z"}}

And

~$ echo $myline  | awk -F[:,] '{print $9 }'

Ouputs:

SCBjYjA5MTEtNTFjZi00ZTBjLWFmN2UtMzFhDTYzYzA3EjFk

[:,] Match a single character present in the list.

,: are the field separators and the field you want is number 9.

edited Oct 13, 2017 at 17:12

Patrick Trentin

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answered Oct 13, 2017 at 3:39

z atef

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1 Comment

z atef Over a year ago

You can always accept as an answer if it does what you wanted :)

Claes Wikner · Accepted Answer · 2017-10-13 16:52:23Z

0

awk -F\" '{print $16}' file

SCBjYjA5MTEtNTFjZi00ZTBjLWFmN2UtMzFhDTYzYzA3EjFk

answered Oct 13, 2017 at 16:52

Claes Wikner

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