put string on top of the text

[packets]

I want to create a script wherein it will put a string somewhere on the text file. But my priority was on top but I hope I can place it in any lines if possible. I tried to create a script using redirect ">" and then put it on top of the file.

The text contains:

foo
fee
fii
fuu

I want to put "MY TEXT" so I did the script below:

#!/bin/bash

cat /root/tmp/text > /root/tmp/text.tmp
echo "MY TEXT" > /root/tmp/text
cat /root/tmp/text.tmp >> /root/tmp/text
rm -f /root/tmp/text.tmp

Is there other way I could do this?

[tpl]

using "tac" you could save one line:

#!/bin/bash
echo "MY TEXT" >> /root/tmp/text
tac /root/tmp/text > /root/tmp/text.tmp
mv /root/tmp/text.tmp /root/tmp/text

[ghostdog74]

put on top

sed '1 i text' file

put at line number 10

sed '10 i text' file

[Kloschüssel]

this may work too:

sed '1i\
your text goes here' file_name > file_name