How to replace one character with two characters using tr

Question

Can tr replace one character with two characters?

I am trying to replace \"~\" with \"~\\n\" but the output does not produce the newline.

$ echo \"a         


        

Answer 1

you could go with awk, let FS/OFS variable do the job for you:

awk -F'~' -v OFS="~\n" '$1=$1' 

test with your example:

kent$ awk -F'~' -v OFS="~\n" '$1=$1' <<< "asdlksad ~ adlkajsd ~ 12345" 
asdlksad ~
 adlkajsd ~
 12345