sed & variable

[Komil13]

Hi,

How do I use a variable with sed?? For example:

if i set a $USER to be kjones

then insert the $USER variable in the first line of a file, using the below command

sed -e '1i$USER' | cat > temp

but this doesn't work ... i get $USER in the file and not the value.

 

[jad]

apart from the useless use of cat award ...

sed -e "1i\$USER" > temp

works.

 

[Komil13]

Thanks Jad ... that worked just perfectly ...

 

[iribach]

if you really will use cat (in your example):

(
echo $user
cat filename
) >temp