[Smaug] A quick scripting puzzle
jay at got.net
Thu Nov 17 21:13:01 PST 2005
You'd have to escape the backticks to use this inside the
LASTSUNDAY example backticks, and on re-parsing the question
it asked for the date, not just day-of-month, so you'd have
to tack more characters into the second `date`s format string.
So I'm over 80 characters anyway. The practice of shaving bytes
off code like this is called 'golfing' in some circles (i.e. perl)
> It took all 80.
> (for x in 1 2 3 4 5;do date -d"$x sun";done)|grep `date +%b`|tail -1|cut -c9-10
> This assumes a non-ancient version of `date` that understands
> '1 sunday', '2 sunday' to mean the next two sundays.
> > For amusement, create a 1-line sh or bash command which will set
> > a shell variable $LASTSUNDAY to the date (2-digit day) of the last
> > Sunday in the current month.
> > Like
> > LASTSUNDAY=`some_shell_stuff`
> > Use only standard Unix utilities such as 'cat' or 'head' or 'date'.
> > The command shouldn't take longer than an 80-character line.
> > (I did this myself for creating a cron job which sends out email
> > announcing a meeting on the last sunday of a month).
> > :)
> > Peter
> > --
> > My Web: http://www.armory.com/~peterbe/
> > News: http://www.sonic.net/~peterbe/news.html
> > Humor: http://www.ibiblio.org/Dave/this-week.html
> > Goat: http://www.livejournal.com/site/goat.bml
> > (I'm 'velikij' on LJ)
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> Jay Campbell
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