Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
awk '{sub(/../,"&-")}1' /input/file
[gray]# or[/gray]
awk '{print substr($0,1,2)"-"substr($0,3)}' /input/file
[gray]# or gawk only[/gray]
awk '{print gensub(/(..)/,"\\1-","")}' /input/file