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| Could anyone explain me please why when I am trying to pipe the egrep
command it doesn't work? I tried the following:
egrep '[a-z].*roy' filename | egrep '.*[ ].*[a-z].*$'
Thanks!
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| Ralf Fassel 2005-10-26, 6:01 pm |
| * "Diane" <froufrou_00@hotmail.com>
| Could anyone explain me please why when I am trying to pipe the
| egrep command it doesn't work?
What was the error message?
R'
| |
| Giorgos Keramidas 2005-10-26, 6:01 pm |
| "Diane" <froufrou_00@hotmail.com> writes:
> Could anyone explain me please why when I am trying to pipe the egrep
> command it doesn't work? I tried the following:
>
> egrep '[a-z].*roy' filename | egrep '.*[ ].*[a-z].*$'
It seems to work fine here:
% flame:/home/keramida$ echo 'Ryan McIlroy' > /tmp/foo
% flame:/home/keramida$ egrep '[a-z].*roy' /tmp/foo | egrep '.*[ ].*[a-z].*$'
% Ryan McIlroy
% flame:/home/keramida$
What do you mean by ``it doesn't work''?
- Giorgos
| |
|
| It executes only the one part of the pipe
Giorgos Keramidas wrote:
> "Diane" <froufrou_00@hotmail.com> writes:
>
> It seems to work fine here:
>
> % flame:/home/keramida$ echo 'Ryan McIlroy' > /tmp/foo
> % flame:/home/keramida$ egrep '[a-z].*roy' /tmp/foo | egrep '.*[ ].*[a-z].*$'
> % Ryan McIlroy
> % flame:/home/keramida$
>
> What do you mean by ``it doesn't work''?
>
> - Giorgos
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| Giorgos Keramidas 2005-10-26, 6:01 pm |
| "Diane" <froufrou_00@hotmail.com> writes:
> Giorgos Keramidas wrote:
>
> It executes only the one part of the pipe
You didn't use double '|' characters by any chance, right?
This:
egrep '[a-z].*roy' filename || egrep '.*[ ].*[a-z].*$'
is very different from the one quoted above.
What shell are you using anyway?
| |
| Barry Margolin 2005-10-27, 2:48 am |
| In article <1130344112.777745.67430@f14g2000cwb.googlegroups.com>,
"Diane" <froufrou_00@hotmail.com> wrote:
> Could anyone explain me please why when I am trying to pipe the egrep
> command it doesn't work? I tried the following:
>
> egrep '[a-z].*roy' filename | egrep '.*[ ].*[a-z].*$'
Works find for me:
barmar $ cat test.data
abcroydef
abcdefg hijkl
groy xxx
barmar $ egrep '[a-z].*roy' test.data | egrep '.*[ ].*[a-z].*$'
groy xxx
barmar $
BTW, you don't need the '.*' at the beginning of the second regexp, the
".*$' at the end of it, nor do you need [] around the space. The second
command in the pipe is equivalent to:
egrep ' .*[a-z]'
--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
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