Re: sed with Variable Substitution in the command

[Steve Matzura]

I solved it by putting the entire sed command in double-quotes, not 
single-quotes.


On 9/19/2024 10:03 AM, Steve Matzura wrote:
> Can't get any of these to work, despite reading and looking at several 
> examples. Variable substitution has always been a problem for me 
> because there doesn't seem to be a single hard-and-fast 
> rule--sometimes the variable is quoted, sometimes it's wrapped in 
> braces, sometimes the "$" is interpreted by the shell as a string 
> positional directive ("$", "%"). All of the following fail:
>
>
> sed -i 's/replace-this/$with_this_variable/'
>
>
> sed -i 's/replace-this/${with_this_variable}/'
>
>
> sed -i 's/replace-this/"${with_this_variable}/'
>
>
> What am I missing?