I want all the lines with assert_equal and without amazon.
I tried following but it is not working.
ack assert_equal | xargs ack -v amazon
+1
A:
There seem to be a couple of problems with your command. In the first part:
ack assert_equal
you do not provide a filename, so ack has nothing to process. In the second part:
xargs ack -v amazon
you are using xargs to provide the results from the initial ack as command-line arguments to the second ack, which is probably not what you intended. ack is already designed to accept data on standard input, so you do not need to use xargs at all.
Here is a statement that should work better:
ack assert_equal filename | ack -v amazon
or, if you are getting the output from another command, something like:
my_command | ack assert_equal | ack -v amazon
Mike Pelley
2010-03-10 19:00:54
ack assert_equal shows tons of data. Thanks for replying.
Nadal
2010-03-10 19:04:11
The `ack` available from betterthangrep.com (as mentioned by Dave Bacher above) will not return any data when run with a single argument (at least on my machine). Another `ack` program, the Kanji code converter, will output any text file provided as-is, but it does not take a -v argument so I'm guessing that's not it. Is there a third `ack` you might be using?
Mike Pelley
2010-03-10 19:21:39
ack does not need a filename to search. It only needs a search pattern. It assumes it wants to search the entire tree down, starting with the current directory.
Andy Lester
2010-03-10 22:57:47
A:
ack is not a standard tool in *nix. since you have it, its ok. But if you are on a *nix system which doesn't have it, here's how you can do it
awk '/asser_equal/&&!/amazon/' file
ghostdog74
2010-03-10 23:48:53