Regular Expression Question

Krispy · #1 (**permalink**) 01-19-2006

Hi - I am trying to ignore the following items from a list.

lp0
lp11
lp12
lp14

The following code works fine, but I was wondering if there was a tidier way to write the lp[0 |11|12|14] regular expression?

Code:

egrep -v "lp[0 |11|12|14]"

Thanks in advance.

linuxpenguin · #2 (**permalink**) 01-19-2006

hmm, dunno why you would think the above is not tidy.
but here is another version you may want to use

grep -v "lp[01][ 124]" filename

Krispy · #3 (**permalink**) 01-20-2006

Thanks linuxpenguin.

Maybe I am being a bit picky.

aigles · #4 (**permalink**) 01-20-2006

Quote:

hmm, dunno why you would think the above is not tidy.
but here is another version you may want to use

grep -v "lp[01][ 124]" filename

This command ignore all that lines :
lp0
lp01
lp02
lp04
lp1
lp11
lp12
lp14

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