, | tail -r
is simpler.
-rob
On Thu, Feb 7, 2008 at 8:55 PM, Douglas A. Gwyn <[EMAIL PROTECTED]> wrote:
> > My question is, how to
> > impliment non-parallel loop/condition commands in Sam?
>
> As you noticed, it's a different model from ed, sed, etc.
> In sam, you can specify sequential edits on separate lines,
> and a collection of lines can be grouped into a single action
> by surrounding the lines with braces { }.
>
>
> > In another
> > word, how to do things, such as inverse all lines, in Sam
>
> Don't forget that you have a lot of text-oriented tools at
> your disposal in any Unix or Plan 9 environment. To
> reverse the order of lines within a file already opened by
> sam, I would simply enter the following sam commands:
> ,| nl | sort -rn
> ,x/^ +[0-9]+ /d
> (on Solaris; maybe a slight change would be needed on Plan 9).
> This would be better packaged as a shell script, using sed
> rather than sam for the final number-stripping operation.
> You could then merely invoke that script for whatever "dot"
> region is selected in sam:
> | reverse # the script name
> It is nice to build up a little collection of useful
> editing scripts. Sometimes it is useful to enter nroff
> source and pipe it through nroff for automatic formatting:
> unformatted text
> .pl 12p\"prevent spacing to end of page afterward
> .ll 2i
> .tl 'le'ctr'ri'
> .ce
> centered title
> formatted text
> unformatted text
> Highlight (set dot to) all but the "unformatted text" and
> enter the same command
> | nroff -Tlp
> (on Solaris; for Plan 9 -Tlp is probably different). The
> -ms or other nroff macro package could be used, as desired.
>
