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How to count number of results found?

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# 1  
Old 02-18-2013
How to count number of results found?
Hi guys,

I'm struggling with this one, any help is appreciated.

I have File1 with hundreds of unique words, like this:
Code:
word1
word2
word3

I want to count each word from file1 in file2 and return how many times each word is found.

I tried something like this:
Code:
for i in $(cat file1); do echo -n "$i ";tr -s ' ' '\n' < file2| grep -c "$i ";done > temp03

but its returning zero for every word even if it does exist.

Can you please help?

Thanks a lot!
Last edited by Franklin52; 02-19-2013 at 04:03 AM.. Reason: Please use code tags for data and code samples
# 2  
Old 02-18-2013
Try something like:
Code:
while read word
do
        c=$( tr ' ' '\n' < file2 | grep -c "${word}" )
        echo "${word} ${c}"
done < file1

This User Gave Thanks to Yoda For This Post:
demmel
# 3  
Old 02-18-2013
Code:
#!/bin/ksh

FILE1=x1.dat
FILE2=x2.dat

while read word
do
  # -w option to grep for searching on a word boundary.
  count=$( grep -wc "$word" $FILE2 )
  printf "%s: %d\n" "$word" $count
done < $FILE1

exit 0

Code:
$ cat x1.dat
word1
word2
word3
$ cat x2.dat
word1
word2
word3
word1
word2
word3oword1
word2
word2
word2
word3
word3
word3
word3 word3word3
$ ./x
word1: 2
word2: 5
word3: 5
$

I would advise against using tr, since that translation of the entire file is happening for each word in FILE1.
Last edited by gary_w; 02-18-2013 at 07:02 PM..
This User Gave Thanks to gary_w For This Post:
demmel
# 4  
Old 02-19-2013
Code:
for i in $(cat file1); do echo -n "$i ";tr -s ' ' '\n' < file2| grep -c "$i ";done > temp03

change echo -n to echo.
This User Gave Thanks to nithinsen For This Post:
demmel
# 5  
Old 02-19-2013
Using gary_w's files, would this satisfy your needs:
Code:
$ grep -of x1.dat x2.dat| sort |uniq -c
      3 word1
      5 word2
      8 word3

---------- Post updated at 12:50 ---------- Previous update was at 12:44 ----------

Quote:
Originally Posted by nithinsen
Code:
for i in $(cat file1); do echo -n "$i ";tr -s ' ' '\n' < file2| grep -c "$i ";done > temp03

change echo -n to echo.
That wouldn't help. Remove the space in grep's "$i " parameter...
This User Gave Thanks to RudiC For This Post:
demmel
# 6  
Old 02-19-2013
Note that RudiC's method counts the word if it is part of another word. I do not know if this is the desired result as the original spec did not get that detailed. Just sayin'.
This User Gave Thanks to gary_w For This Post:
demmel
# 7  
Old 02-19-2013
Well, then, use the -w switch to grep. This then would yield exactly gary_w's result. But I'm not sure that this will work on all grep versions.
This User Gave Thanks to RudiC For This Post:
demmel
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