Re: for loop exclusion

In article <20060426201134.GA11552@xxxxxxxxxxxxxxxxxxx>,
Jeff Hyman <scolist@xxxxxxxxxx> wrote:
Hello all,

# for STRING in "jeff " <== Nope.
for STRING in jeff
do
grep -i $STRING ascii_file
done

In the above example,
how would one exclude "jeffrey" from being found
since I'm only looking for "jeff" ?

If you were just wondering why the above commented-out line didn't work, it's
because you didn't quote $STRING, and so lost the trailing space.

grep -i "$STRING" ascii_file

would not find jeffrey. But, it also wouldn't find "jeff" at the end of a
line. To search for 'jeff' as a word:

egrep -i '(^|[^[:alnum:]])jeff([^[:alnum:]]|$)'

This finds 'jeff' surrounded by non-alphanums or the ends of a line, equivalent
to the word-boundary operators available in some regular expression lexicons.

John
--
John DuBois spcecdt@xxxxxxxxxx KC6QKZ/AE http://www.armory.com/~spcecdt/
.

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