The difference between

for i in "a b"; do	mv -f $i $i-UBUNTU	...done

and

FOO="a b"for i in $FOO; do	mv -f $i $i-UBUNTU	...done

is subtle (in visual appearance) and easy to accidentally forget, but important .

(Fortunately I am doing test installations in VMWare thesedays, so a mistake is less tedious than it used to be .)

A lot of documentation of Perl-style regular expressions describes \b as'matching a word boundary' or similar phrases. Life would be simpler ifthe documentation used the phrase 'identifier boundary' instead, because\b's idea of word characters includes underscores .Thus \b and \w's idea of word characters makes a lot of sense forpicking out identifiers in languages like C, but not necessarilyso much sense for things like picking out words in written text.

(The same thing applies to

We had a power meter lying around my new office and a differentvariety of stuff from last time , so here'ssome more power consumption numbers.

First, for a random assortment of stuff: