[SOLVED] sed help

Linux_Kidd · 03-12-2024, 03:17 PM

I kinda suck with sed.

I need sed (gnu or other) expression to remove lines inclusive of a from pattern to an end pattern.
"marker1" and "marker2" are the text patterns.

from:

Code:

<tag1>
<!-- marker1 -->
d
d
d
<!-- marker2 -->
</tag1>

to:

Code:

<tag1>
</tag1>

TB0ne · 03-12-2024, 03:41 PM

Quote:

Originally Posted by Linux_Kidd

I kinda suck with sed. I need sed (gnu or other) expression to remove lines inclusive of a from pattern to an end pattern. "marker1" and "marker2" are the text patterns. from:

Code:

<tag1>
<!-- marker1 -->
d
d
d
<!-- marker2 -->
</tag1>

to:

Code:

<tag1>
</tag1>

Sounds like your other thread:
https://www.linuxquestions.org/quest...pt-4175734593/

There are a lot of ways to do this in sed; putting "sed remove from between patterns" into any search-engine will give you lots. You say you're stuck, but don't show us what you're stuck ON, or show your efforts. This also seems like some sort of JSON/XML/HTML code, and there are FAR better tools to parse up HTML/JSON/structured data.

Keith Hedger · 03-12-2024, 03:41 PM

Code:

keithhedger@Marvin [ ~ ]$ echo '<tag1>
<!-- marker1 -->
d
d
d
<!-- marker2 -->
</tag1>'|sed '/<!-- marker1 -->/,/<!-- marker2 -->/d'
<tag1>
</tag1>

TB0ne types faster than me

Linux_Kidd · 03-12-2024, 09:03 PM

Quote:

Originally Posted by TB0ne

Sounds like your other thread:
https://www.linuxquestions.org/quest...pt-4175734593/

There are a lot of ways to do this in sed; putting "sed remove from between patterns" into any search-engine will give you lots. You say you're stuck, but don't show us what you're stuck ON, or show your efforts. This also seems like some sort of JSON/XML/HTML code, and there are FAR better tools to parse up HTML/JSON/structured data.

Between patterns I had working after modifications.
But then my other code didn't work ok with that.
So now I needed to do pattern to pattern inclusive delete.
Like I said, my sed skills are crappy, and I am testing sed between ubuntu and android, and the android sed comes from in toybox, I have to escape the "!" otherwise sed fails.

But I don't really need to pattern match the whole marker tag, just need to pattern the words "marker1" and "marker2", which means no more "!" issue.

A greatful thanks for the replies.

pan64 · 03-13-2024, 02:02 AM

it is answered, I think. I can add only a remark: you can use . (dot) instead of those strange characters (like |), sometimes that helps.
We have no info about your other code, therefore can't help on that.

NevemTeve · 03-13-2024, 02:53 AM

Perhaps:

Code:

ptndel () {
    local File="$1"
    local SedCmd='s;[].*[\\/];\\&;g'
    local From=$(sed "$SedCmd" <<<"$2")
    local To=$(sed "$SedCmd" <<<"$3")
    sed "/$From/,/$To/d" "$File"
}

test:

Code:

ptndel - ".*" "[]" <<"DONE"
elso
.*
kivag
[]
utolso
DONE

result:

Code:

elso
utolso

pan64 · 03-13-2024, 03:32 AM

Quote:

Originally Posted by NevemTeve

Perhaps:

Code:

ptndel () {
    local File="$1"
    local SedCmd='s;[\[\]\.\\\/];\\&;g'
    local From=$(sed "$SedCmd" <<<"$2")
    local To=$(sed "$SedCmd" <<<"$3")
    sed "/$From/,/$To/d "$File"
}

you can escape chars in shell too: https://stackoverflow.com/questions/...hen-using-bash