Exclude dash in grep

Subbeh · #1 01-21-2013

Hi,

I must be overlooking something, but I don't understand why this doesn't work. I'm trying to grep on a date, excluding all the lines starting with a dash:

testfile:

Code:

#2013-12-31
2013-12-31

Scrutinizer · #2 01-21-2013

[^#] means a single character that is not a hash-sign.
Why not use:

Code:

grep '^2013-12-31'

elixir_sinari · #3 01-21-2013

Elementary. [^#] will match one character which is not an octothorpe (or hash). So, what you are asking grep to match is one non-hash character (mandatory for the overall pattern to match) at the beginning of a line followed by 2013-12-31 .

Get it?

Subbeh · #4 01-21-2013

Quote:

Originally Posted by Scrutinizer

[^#] means a single character that is not a hash-sign.
Why not use:

Code:

grep '^2013-12-31'

But perhaps you mean this:

Code:

grep '^[^#]*2013-12-31'

The problem is that the string doesn't always start with the date. It could be @2013-12-31 for example.

Code:

grep '^[^#]*2013-12-31'

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The Following User Says Thank You to Scrutinizer For This Useful Post:
Subbeh (01-21-2013)

The Following User Says Thank You to elixir_sinari For This Useful Post:
Subbeh (01-21-2013)