how can I use lines in a file as arg and append a prefix to each arg in bash?

Question

I have a file like this:

arg1
arg2
arg3
...
argN

I knew I can use xargs for this cat input.txt | xargs <my command>. However, I would like to append a prefix to each args so the result should be <my command> prefix/arg1 prefix/arg2 ...

The -I cannot work because it implies -L 1 and -x.

Answer 1

You could use sed to change the lines before piping them into xargs

sed 's/^/prefix\//' input.txt | xargs <my command>