Ηow to append an variable with many words at the beginning of a file

Asked Jan 24 '22 at 11:24

Active Jan 24 '22 at 11:24

Viewed 24 times

I have the following variable

lanint="β— lan.1021 (inactive -> active - 1 Change)"

and I want to append it to the begin of a file I use the following code, but it shows me an error because I use spaces and special characters.

awk -i inplace 'BEGINFILE{print strftime("%d/%m/%Y - %T") " My info : '$lanint'"}{print}' log.txt

Can you help me how to do it ?

asked Jan 24 '22 at 11:24

swa056

If it isn't a multiline string then you can pass it as argument to awk `awk -v lanint="$lanint" ...` – Fravadona Jan 24 '22 at 11:28
Even if it is a multiline string, you can do that. – tripleee Jan 24 '22 at 11:33
The simple and obvious fix is to use double quotes around the string, though this could introduce Awk syntax errors; in that sense, @Fravadona's solution is more robust. – tripleee Jan 24 '22 at 11:35
@tripleee This look like a bug produced by parenhesis is *`regex`*! – F. Hauri - Give Up GitHub Jan 24 '22 at 14:19
Thank you @Fravadona to pass it as an argument work just fine. – swa056 Jan 24 '22 at 20:32
@tripleee you are right for the multiline string. – swa056 Jan 24 '22 at 20:34

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