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I have 2 txt files in Linux.
A.txt contents (each line will contain a number):
1
2
3
B.txt contents (each line will contain a number):
1
2
3
10
20
30
grep -f A.txt B.txt results below:
1
2
3
10
20
30
Is there a way to grep in such a way I will get only the exact match, i.e. not 10, 20, 30?
Thanks in advance
934
The easiest of the two commands is to use grep's -w option. This will find only lines that contain your target word as a complete word. Run the command "grep -w hub" against your target file and you will only see lines that contain the word "hub" as a complete word.
To Show Lines That Exactly Match a Search String The grep command prints entire lines when it finds a match in a file. To print only those lines that completely match the search string, add the -x option. The output shows only the lines with the exact match.
Try grep " OK$" or grep "[0-9]* OK" . You want to choose a pattern that matches what you want, but won't match what you don't want. That pattern will depend upon what your whole file contents might look like.
Exact Match with -w Option The -w option is used to match specified term exactly for the given content. Actually the -w option is created to match words where single word can match.
For exact match use -x switch
grep -x -f A.txt B.txt
EDIT: If you don't want grep's regex capabilities and need to treat search pattern as fixed-strings then use -F switch as:
grep -xF -f A.txt B.txt
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