Re: GREP Help

Lew Pitcher <lpitcher@xxxxxxxxxxxx>:
On Jan 31, 8:20 pm, Garry Knight <garrykni...@xxxxxxx> wrote:
M wrote:
That gives me the lines that do not contain # but I want the lines that do
not begin with it.

Here's another way of doing it:
grep "^[^#]" /etc/my.conf

At 25 characters, both solutions are probably the shortest possible, but Lew
and Sinner's version is easier to type.

Yes, but your solution eliminates empty lines, and that might make the
results more readable.

Just another way to say the same thing, fwiw:

egrep -v '^#|^$' /etc/my.conf

29 chars, and it's a little more extensible. I use the same construct
for deselecting directories/files I don't want in my backups (one honking
long line, artifically broken for posting):

^/home/user/.netscape/cache| \
^/home/user/devl/kr/src/kernel-source-2.6.8| \
^/home/user/dwn| \
^/home/user/.opera/cache| \
lost\+found| \
^/home/user/.gnome2/epiphany/mozilla/epiphany| \
^/home/user/.galeon/mozilla/galeon/Cache| \
^/home/user/.mozilla/default/w2u0h33y.slt/Cache

Then:

find /somedir -depth -mount | egrep -v "`cat tarX_somedir`" | ...


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