[EMAIL PROTECTED] am Freitag, 9. Februar 2007 14:11:
> I just found this one online but not sure I understand it
>
> what are the .{ and s/ called so I can look them up?
>
> http://user.it.uu.se/~matkin/programming/PERL/perl-cookbook.shtml
>
> perl5 -p000e 'tr/ \t\n\r/ /;s/(.{50,72})\s/$1\n/g;$_.="\n"x2'
>
> >perl -n00e'tr/\n/ /; print "$1\n" while s/^(.{0,69}\S)\s+//; print "\n"'
If you speak about this part: s/(.{50,72})\s/$1\n/g
.{50,72} belong together. {} is one of the possible quantifiers.
It means (in this case, without the /s modifier):
"match any sequence of characters (except newline) of minimal
length 50 and maximal length 72"
There are two 's/' combinations in the expample:
The first is part of the 's///' construct, meaning it's a substitution.
In the second, '\s' belong together (without the following '/').
'\s' means "white space character".
You can read all about this by typing
perldoc perlre
on the command line
Hope this helps!
Dani
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