01-22-2009
vi Search - First Line Not Containing a Particular String
Does anyone know if there is a search command in vi that positions the cursor on the first line not containing a particular string?
I am using the version of vi that comes with HP-UX 11.11, and Vim 7.2 for Windows.
I am editing a large file. Every line of the file has a timestamp in it, the same timestamp often recurs, and I have to find the points where the timestamp changes. There are other ways to do what I have to do, and I've got around the problem before, but I'm hoping there is a neat way of doing this in vi.
As one example, I have a large number of lines with the timestamp "Jan 13 06:01". I need to position the cursor on the next line that doesn't contain "Jan 13 06:01".
I can get all the lines that don't contain "Jan 13 06:01" using a NOT with the :g command -
:g!/Jan 13 06:01/
Since the file is very large I get a lot of screenfuls of results, and after the process is over the cursor is positioned at the last of the returned lines, instead of the first.
I need a way of using a NOT in a simple forward search.
I can do a forward search using -
/Jan 13 06:01/
This includes the current line after the current cursor position in its search. If it's possible to use a NOT with this search it might, (though I don't know for sure), just find the next 12 characters that don't equal "Jan 13 06:07", which wouldn't be useful. (I don't know for sure because I don't know how to put a NOT into that search.) What I need is the next whole line that doesn't contain the string.
I can also do a forward search starting with a ":" to get to the command line before typing the first "/" -
:/Jan 13 06:01/
I don't know all the differences between this and the previous search, but I do know this one doesn't include the current line after the current cursor position in its search. Using a NOT with this search might give me what I want.
I was expecting this to work -
:!/Jan 13 06:01/
but of course, the ! opens a shell.
Any help appreciated.
Many thanks.
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