write variable into specific line with sed command

Question

echo -n "##### STATIONS? #######"
read station
text="stab_site "

I need to write echo $text$station into the 27th line of text file. I used below command but it didn't work,

sed -i "27i\$text$station" text.data

it produce; $textankr ista "text" variable cannot be passed within sed function.

Answer 1

That's because your shell is interpreting \$ to mean a literal (escaped) dollar sign. Try

sed -i "27i\\$text$station" text.data

or using a mix of single- and double-quotes

sed -i '27i\'"$text$station" text.data

or with a literal newline

sed -i "27i\
$text$station" text.data

(which is more POSIXly correct, I think).

Answer 2

Maybe the problem can be a empty output file. Example: #!/bin/bash

CAMINHO='/etc/scripts/dropbox.log'

RESULTADO=`date +%d/%m/%Y | tr '\n' ' '; dropbox status;`

sed -i "1i\
$RESULTADO" /etc/scripts/dropbox.log

This script cant write to a empty file dropbox.log.

Write some text on file and execute script again.