On Mon, 16 Dec 2002, Cameron Simpson wrote:
> BTW, you don't need all though sloshes, unless this came from a Makefile
> (which I doubt because then there'd be lots of doubled $$s floating
> around).
>
> Eg:
>
> for idx in 5 4 3 2 1
> do if [ -d $$SNAPSHOT/daily.$idx ]
> then
> $MV $SNAPSHOT/daily.$idx $SNAPSHOT/daily.`expr $idx + 1`
> fi
> done
>
just to tighten things up, you might consider any or all of the following:
1) use the sequential && (and) operator: (or not, personal taste here)
[ -d $SNAPSHOT/daily.$idx ] && $MV $SNAP ... etc etc ...
^^
command sequencing (or whatever it's called)
2) use the curly brace expansion operator to filter out common stuff:
$MV $SNAPSHOT/daily.{$idx,$((idx+1))} # the entire $MV command
rday
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