Your groff command references $o but your script sets no value
for it, so $o is either empty or inherited from your environment.
* Alain D D Williams <a...@phcomp.co.uk> [21-02/22=Mo 12:58 +0000]:
> On Mon, Feb 22, 2021 at 06:04:15AM -0600, Richard Owlett wrote:
>> I have downloaded a program with a man-page in troff format.
>> How do I view it?
>> I installed troffcvt but its man-page is non-informative.
>> TIA
>
> Feel free to use my script to do that, below.
>
> ps_print is another script that send to my printer.
>
> ****************
> #!/bin/ksh
> # Format up a man page, the file name is the argument
> # ADDW, July 1999
>
> progname=$0
>
> Usage() {
> cat <<-!
> Process a file with the man macros.
> Usage: $0 [opts] [file]
> -p generate (Postscript) output to current printer
> -x eXplain
> !
> exit $1
> }
>
> Postscript=0
>
> while getopts px arg
> do case "$arg" in
> p) Postscript=1;;
> x) Usage 0;;
> esac
> done
>
> shift $((OPTIND - 1))
>
>
> if [ $# -eq 0 ]
> then echo "Usage: $0 filename" >&2
> exit 2
> fi
>
> if [ $Postscript = 1 ]
> then groff -man -etpsR -rO0.75i -rW6.5i -rL11i $o $1 | ps_print
> else tbl $1 | nroff -man | col | less
> fi
> ****************
