Change a certain line in several documents with command/variables

[Ivan K 0]

Good evening together,

i have multiple .json files where i want to replace a certain line in each.
Line 6 in each file contains following content:

---

1.json (“edition”: 1,)
2.json (“edition”: 2,)
3.json (“edition”: 3,)
4.json (“edition”: 4,)
… etc.
1000.json (“edition”: 1000,)

change for each document the line 6 to:
|
|
|
V
1.json ( “external_url” : “https://example.com/?token_id=1”,)
2.json ( “external_url” : “https://example.com/?token_id=2”,)
3.json ( “external_url” : “https://example.com/?token_id=3”,)
4.json ( “external_url” : “https://example.com/?token_id=4”,)
… etc.
1000.json ( “external_url” : “https://example.com/?token_id=1000”,)

---

Is there any command to execute to change this line for each document?

Many thanks in advance.

[PeterJones]

@ivan-k-0 said in Change a certain line in several documents with command/variables:

Is there any command to execute to change this line for each document?

It’s called regular expression search and replace.

Your method of describing your data is rather confusing. I don’t know whether those digits really prefix each line, or if you are just numbering the lines, or numbering the documents that contain that as line#6. Using the Template for Search/Replace questions mentioned below would have helped you communicate more clearly.

But I can come up with a solution that is agnostic of that prefix anyway.

If you want to replace any json ("edition": ###,) line with json ( "external_url":"https://example.com/?token_id=###",) then you can use
FIND = json \("edition": (\d+),\)
REPLACE = json \( "external_url":"https://example.com/?token_id=${1}",\)
SEARCH MODE = Regular Expression

If you have many such lines in the same file, but only want to replace the one on line 6, then change the FIND to \A(?-s:^.*$\R){5}\K^json \("edition": (\d+),\), which looks for the beginning of the file and 5 lines, then restarts the match.

If you allow other characters before the json prefix on line 6, you might have to tweak what comes after the \K to allow that. I will leave that as an exercise for the reader; give it a try using the docs below, and if you cannot figure it out, ask for hints.

-—

Useful References

• Please Read Before Posting
• Template for Search/Replace Questions
• FAQ: Where to find regular expressions (regex) documentation
• Notepad++ Online User Manual: Searching/Regex