grep inclusive and

schneidz · 09-25-2007, 11:26 AM

hi please check out this example:

Code:

schneidz@lq temp> cat temp.txt
hello
hello world
world
schneidz@lq temp> egrep "(hello|world)" temp.txt
hello
hello world
world

matches all three lines because they have hello or world in it.

i would like only the line that has hello and world in it.

Code:

schneidz@lq temp> grep hello*world temp.txt

produces nothing. i like grep because i can use the '-l' switch which returns the filename only.

this is on aix so some options are missing from the gnu version

thanks,

anomie · 09-25-2007, 11:35 AM

Try:
grep 'hello.*world' temp.txt

Don't forget the single quotes. You don't want your shell expanding values for you...

schneidz · 09-25-2007, 11:40 AM

thanks so much.

fyi this works too:

Code:

egrep hello.+world temp

matthewg42 · 09-25-2007, 05:02 PM

The example above will get the lines provided, but would miss "world hello". For this there are several options, of which I present two:

Code:

grep hello temp |grep world
egrep '(hello.*world|world.*hello)'

ghostdog74 · 09-25-2007, 08:31 PM

use awk. it gives you more flexibility than (e)grep.

Code:

awk '/hello/ && /world/' "file"

output:

Code:

# awk '/hello/ && /world/' "file"
hello world