add line to file in specific place in linux (bash)

Question

I'm using linux buildroot os disto 2020.02. and I have a conf file formated like so:

[section1]
key1 = val1
ke2 = val2

[section2]
key1 = val1
ke2 = val2

I would like to add the line "key3 = val3" to section1, it's important to add it after all the existing lines in the section, how can I do it?

I am also need to delete this line after.

On SO we do encourage users to do add their efforts which they have put in order to solve their own problems, so kindly do add the same your question and let us know then. — RavinderSingh13, Jul 06 '20 at 11:43
@RavinderSingh13 I don't have any efforts to the solution. I have no idea how can I do it. — matz_ch, Jul 06 '20 at 11:50
`echo "key3 = val3" | crudini --merge conf-file "section1"` / `crudini --del conf-file "section1" key3` — jhnc, Jul 06 '20 at 11:51
@jhnc Thanks. unfortunately, crudini is not supported on my board. — matz_ch, Jul 06 '20 at 12:30
I have found a solution for a similar question: https://stackoverflow.com/questions/22497246/insert-multiple-lines-into-a-file-after-specified-pattern-using-shell-script Thanks everyone. — matz_ch, Jul 06 '20 at 12:41

score 0 · Answer 1 · answered Jul 06 '20 at 11:51

0

Try this command : :g/ke2/ +1 s/$/key3 = val3/ | +1,$ d

answered Jul 06 '20 at 11:51

Farhad Sarvari

1 Answers1