[lug] delete last character of every line

[Calvin Dodge]

On Wed, Mar 23, 2005 at 02:33:54PM -0700, Shannon Johnston wrote:
> Once again, I'm stuck with a little problem.
> I've got a list of 6000 ip addresses in a text file, all of them have a
> trailing ".". I need to get rid of that before it becomes useful.
> 
> Does anybody know how to do that? Either in vi or as a sed command?

Hmmm ... if the format is "nnn.nnn.nnn.nnn.", then
cut -d '.' -f 1-4 FILENAME >newfile

Another way - if there are no spaces in the lines, is:

(for n in $(cat FILENAME);do echo ${n%\.};done) >newfile

But since you asked for sed, I finally broke down and tried that (I'm
not a sed expert):

sed -e 's/\(.*\)\./\1/' FILENAME >newfile

Calvin

-- 
Calvin Dodge
Certified Linux Bigot (tm)
http://www.caldodge.fpcc.net