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I have used the following command to get unique list of each name from my file 

grep -oP "name_\w*" file_copy.txt | sort |uniq > list.txt
FILE=list.txt
while read line; do
     cat file_copy.txt | grep "$line" | wc -l 
     cat file_copy.txt | grep $line | grep "name" | grep $line+1 -v | wc -l

Last command is not running the way i expected

list.txt files like below:
USA
Russia
Japan

file_copy.txt
USA Russia Russia Russia Japan
Japan Japan USA USA Russia
Japan Japan USA USA Russia
Japan Russia USA USA Russia

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  • 2
    would be a good idea to add sample input and expected output as well Commented Nov 23, 2016 at 16:12
  • @Sundeep I have two files one is list_txt where I have some unique names like a,b,c etc and second file which is file_copy.txt where i would like to search and count these names to create a venn. And I want combinations of two and invert-match(-v) for third. Commented Nov 23, 2016 at 16:27
  • that is not clear, at least to me.. what I would suggest is create sample files for list_txt, file_copy.txt and add complete expected output for that to question... Commented Nov 23, 2016 at 16:31

2 Answers 2

Reset to default
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Replace last line to:

grep -c -e "$line" -e "name" -e $((line+1))

You can define more condition with parameter -e, and wc is useless, grep can count matches with -c

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For a given input file:

a
b
c
d
e
f
g

If you want to get a count for any lines matching, say, e and b:

$ grep -c -e 'e' -e 'b'
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2
  • Thank you @DopeGhoti, I would like do invert-match(-v) for one of the character and check the overlapping to create a Venn. So the Idea is to match these names in another files to count overlapping numbers Commented Nov 23, 2016 at 16:22
  • You might want to look into comm. Commented Nov 23, 2016 at 16:26

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