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Count the number of occurence of perticular word from file

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Top Forums Shell Programming and Scripting Count the number of occurence of perticular word from file
# 22  
Old 08-09-2007
Quote:
Originally Posted by Shell_Life
This solution does not work.

Here is a sample file:
Code:
a aa aaa
aaa aa a
aaa aa a aaa aa a aaa

Here is one test:
Code:
tr -cs 'A-Za-z' '\n' < FILE | grep -c "aaa"

It gives the total of words as '3', when the answer is '5'.

I get 5 using that script. If you are using a very old version of tr, you may need to bracket the range and/or extend the replacement string:

Code:
tr -cs '[A-Za-z]' '\n*' < FILE | grep -c "aaa"

Or be more specific about what get translated:

Code:
tr -s ' \011\012' '\n\n\n' < FILE | grep -c "aaa"

# 23  
Old 08-09-2007
Quote:
Originally Posted by cfajohnson
Or be more specific about what get translated:
Code:
tr -s ' \011\012' '\n\n\n' < FILE | grep -c "aaa"

Using the same test data:
Code:
a aa aaa
aaa aa a
aaa aa a aaa aa a aaa

This solution does not work for the following case:
Code:
tr -s ' \011\012' '\n\n\n' < FILE | grep -c "a"

It gives the total of words as '13', when the answer is '4'.
# 24  
Old 08-09-2007
I havn't though about this much at all, nor have I tested it, but for the awk solution I think this should work:
Code:
awk 'BEGIN {RS="abc" } END { print NR }'

(where abc is the word)
# 25  
Old 08-09-2007
Quote:
Originally Posted by reborg
Code:
awk 'BEGIN {RS="abc" } END { print NR }'

(where abc is the word)
Reborg,
Using the same test data:
Code:
a aa aaa
aaa aa a
aaa aa a aaa aa a aaa

Using your solution to find the number of 'a' words:
Code:
awk 'BEGIN {RS="a" } END { print NR }' FILE

Gives total of '28' when the result is '4'.
# 26  
Old 08-09-2007
This solution (previously posted) works:
Code:
$ cat file
a aa aaa
aaa aa a
aaa aa a aaa aa a aaa
 aa a aaa


awk '{ 
     for (i=1;i<=NF;i++)
         if ( $i == "a")
         c++
     }
END{
print c}' file
5

Cheers
# 27  
Old 08-09-2007
Quote:
The quick brown fox jumps over the lazy dog.
Is the last colored sequence of characters a word?
# 28  
Old 08-09-2007
Quote:
Originally Posted by Shell_Life
Using the same test data:
Code:
a aa aaa
aaa aa a
aaa aa a aaa aa a aaa

This solution does not work for the following case:
Code:
tr -s ' \011\012' '\n\n\n' < FILE | grep -c "a"

It gives the total of words as '13', when the answer is '4'.

Then you need to adjust your grep to search for a word, not a letter. If your grep has it, use -w; if not, use "\<a\>".

Also, some older versions of tr need \012 instead of \n.
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