NNGRAB(1) General Commands Manual NNGRAB(1)NAME
nngrab - news retrieval by keyword (nn)
SYNOPSIS
nngrab [ -c ] keyword
DESCRIPTION
nngrab invokes nn on all USENET articles whose subject (or keyword) field(s) contain an instance of keyword. nngrab is a fast equivalent
for:
nn -mxX -s/keyword all
For example,
nngrab tesla
will retrieve items concerning Nikola Tesla.
Keyword case is ignored unless -c is specified, and the keyword can be a regular expressions (escaped to avoid conflicts with the shell).
For example,
nngrab "n.*tesla"
The range of search includes all newsgroups on the system, including ones which are unsubscribed.
FILES
$db/subjects subject database
SEE ALSO nn(1), nnspew(8), egrep(1)NOTES
nngrab can be much faster than the equivalent command shown above, if the tertiary news subject database generated by the nnspew(8) daemon
exists. To enable the faster operation, nnspew must be executed regularly by cron.
nngrab uses egrep(1) to scan the subject database, so if you are not running fast egrep (GNU-style) this is all for naught.
nngrab will use a subject database generated by nnspew independent of its age. Thus, if you stop running nnspew, remember to remove the
subjects file as well.
BUGS
Under version 6.4 onwards, search of the "Keywords:" field is not supported.
Search on name is not possible either.
AUTHOR
James A. Woods, NASA Ames Research Center
E-mail: jaw@ames.arc.nasa.gov
4th Berkeley Distribution Release 6.6 NNGRAB(1)
Check Out this Related Man Page
NNSPEW(8) System Manager's Manual NNSPEW(8)NAME
nnspew - subject database manager (nn)
SYNOPSIS
nnspew
DESCRIPTION
nnspew builds a sorted database of all available subjects in the nn article database for fast access via the nngrab utility.
nnspew should be activated regularly to rebuild the subject database, e.g. by cron. For example:
2 6,9,12,15,18,21 * * * root /bin/nice /usr/lib/nn/nnspew
Cross posted articles are only represented in the database once, and identical subjects in each group are merged into one to use a minimum
of disk space. This saves about 50% of the disk space otherwise required.
FILES
$db/subjects subject database
SEE ALSO nn(1), nngrab(1), egrep(1)NOTES
nngrap will use the subject database generated by nnspew independent of its age. Thus, if you stop running nnspew, remember to remove the
subjects file as well.
BUGS
nnmaster should automatically append new articles to the subject database to keep it up-to-date, and thus require less frequent rebuilding
using nnspew.
AUTHOR
James A. Woods, NASA Ames Research Center
E-mail: jaw@ames.arc.nasa.gov
4th Berkeley Distribution Release 6.6 NNSPEW(8)
Hi,
This question may be quite newbish.
I've stored a few files on my Unix system and am wondering how to search for their contents (i.e. I input the keyword and get a list of files with this keyword)
I'd then like to put it on my website (php).
I thought of find and grep, but am not... (19 Replies)
Hi,
I don't understand what is the correct way of writing:
egrep -l '{$min,$max} $pattern' $filename
I tryed to search on google how to wtrite {$min, $max}, but I don't have success (7 Replies)
We have an egrep search in a while loop.
egrep -w "$key" ${PICKUP_DIR}/new_update >> ${PICKUP_DIR}/update_record_new
${PICKUP_DIR}/new_update is 210 MB file
In each iteration, the egrep on an average takes around 50-60 seconds to search. Ther'es nothing significant in the loop other... (7 Replies)
Hi All,
i have to check a log file for the patterns like error, msg, fail or warn...
for this i can do, like
here log file is the input file to the script
egrep -i "error | fail | warn | unable" logfile.log
if
then
echo " patteren found "
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echo " pattern not... (8 Replies)
I have my data something like this. I want to delete all the lines before the frist instance of the key word 'ravi kumar'
aaa
bbbbbb cccccc
ddddd eeeee
1234 ravi kumar
aaaaaa vvvvvvv
5678 ravi kumar
rrrrrrr mmmmmmm
I want the output as follows.
1234 ravi kumar
aaaaaa... (8 Replies)
Hi All,
I am having a query regarding the usage of egrep command.
i am having two unix environmanets in environment when i am using
"egrep -f" it is working fine and other unix environment i am getting a syntax error.
Please let me know if i need to set any environmane variables.
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Can some one help me to print 4th line before the match using egrep or grep command options.
i have a very large file and i need to search the entire file, look for the match (key word) and print 4th line before the matched key word. (9 Replies)
Hello Unix gurus!
I'm a unix newbie. Can I use sed to replace a keyword in an xml file and convert this keyword with an output of a unix cat command?
for example: <test>keyword</test>
and temp.txt = hello!
I would like to replace "keyword" with the output of "cat temp.txt".
I think... (6 Replies)
hi,
i'm using egrep -i to search thru some text files for keywords (also stored in a file).
egrep does wildcard search aka %keyword%
as long as the keyword is found, it will be spool to a file
meaning if keyword is 'xyz'
123 aabgdggjxyzslgj
124 xyzgjksgjd
returns
123... (8 Replies)
Hi,
I have a weird requirement using egrep.
I'm using egrep -o 'x.*|y.*' to a file.
Since egrep returns the value if either of the 1 satisfies.
But in my file both the conditions are satisfied (x and y) and hence I want to return twice using this command.
Is there any way around?
I don't... (11 Replies)
Hi i have a data file whcih contains the data as follows :
FH332OY86|AAABBB CCCC DDDA FHLMC 30 8.000|FHLMC|3|30|8.00000000|1986|26.29164289|3.29544844|0.00000000|10.05940539|107.50704264|Mar 8 2013 12:00AM|20130311|D|DA|DAA|DAAC|201302
FH332OY87|AAABBB CCCC DDDA FHLMC 30... (9 Replies)
Hi All,
I am workingon below script, Where requirement is first copy the file with differnt name and than remove the specific keyword in the file after reading from the input file.
So I have to copy of file equal to the number of lines present in the input file and replace the specfic... (7 Replies)
Hello,
Need help using egrep
file format:
test.gz
Date, time, , number 1, number 2, counter...
20130618,912154, ,009912345678,911111111111,10000, , ,abc
20130618,982148, ,009101373810,034028791952294,8999, , ,gh
Want to extract number1 OR number2 records in files based on a two or... (8 Replies)
Hi
I want to implement something like this:
if( keyword1 exists)
then
check if(keyword2 exists in the same line)
then replace keyword 2 with New_Keyword
else
Add New_Keyword at the end of line
end if
eg:
Check for Keyword JUNGLE and add/replace... (7 Replies)
Hello scripting geniusii! I come to kneel before the alter of your wisdom!
I am looking to take a keyword and replace characters within that keyword and add them to a string variable. I would like this to only go through however many characters the word has, which may vary in size.
... (10 Replies)