printfformats[strings]
Print strings using the specified formats.
formats can be ordinary text characters, C-language escape
characters, or more commonly, a set of conversion arguments listed below.
Print the next string.
n$sPrint the nth string.
m[.n]sPrint the next string, using a field that is m characters wide.
Optionally limit the field to print only the first n characters
of string.
Strings are right-adjusted unless the left-adjustment flag - is specified.
printf '%s %s\n' "My files are in" $HOMEprintf '%-25.15s %s\n' "My files are in" $HOME