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:

Here's a lesson that in retrospect I first absorbed from seeingpeople fall for what were really rather bad forgeries on Usenet,way back when:

Most people aren't suspicious.

Most people see what they expect to, and don't notice what they don'texpect to. If something is missing, people fill it in automatically; ifsomething is vaguely off, people ignore it. You don't need to be good tofool people; you just need to not be bad enough to force