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find the same content in the file

 
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# 1  
Old 03-23-2005
find the same content in the file
I have two files ( eg. file1 and file2 ) , its contents are as below , I want to find out the same content ( same word ) in the two files , in the below example , the same content is "aaa" , could suggest how to do it ? thx.


#vi file1
aaa
bbb
ccc
ddd


#vi file2
111
222
333
aaa
# 2  
Old 03-23-2005
Quote:
Originally Posted by ust
I have two files ( eg. file1 and file2 ) , its contents are as below , I want to find out the same content ( same word ) in the two files , in the below example , the same content is "aaa" , could suggest how to do it ? thx.


#vi file1
aaa
bbb
ccc
ddd


#vi file2
111
222
333
aaa
try:

for i in `cat file1`
do
grep $i file2
done
# 3  
Old 03-23-2005
comm -12 file1 file2
# 4  
Old 03-24-2005
Please read the site rules, this looks as though it is a classic example of a homework question.

Please refrain from asking such questions in this forum. If, however, this is "self-study" for work enrichment please continue.
# 5  
Old 03-25-2005
Quote:
Originally Posted by marcello
try:

for i in `cat file1`
do
grep $i file2
done
Homework or otherwise, UUOC is all I see Smilie

Code:
while read line
do
  # do something
done < file

....is faster and avoids the useless use of cat...

cheers
ZB
 
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