Grep the lines in one file that are also in another


 
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# 8  
Old 09-30-2014
Quote:
Originally Posted by RavinderSingh13
Hello Akshay,

If I am correct here OP has asked in 1st post output as follows.


And your output is coming as follows so only I have requested you to add.
Code:
awk 'FNR==NR{A[$1];next}$1 in A' fileA fileB
adventures
adversity

Thanks,
R. Singh
No surprise man if you reverse files Smilie
# 9  
Old 09-30-2014
Why not
Code:
grep -ffileB fileA
adventures     com|hum
adversity    com|hum|hum

# 10  
Old 09-30-2014
I like things that are easy to read, imho makes it simpler to maintain later on...
Code:
while read line;do
   grep ^$line[[:space:]] fileA
done<fileB

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