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Lea Davies
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Asked: 2022-05-17T14:22:37+00:00 In:

Steps to fix the error “binary file (standard input) matches”

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I have the following program code, but I do not know how to find the correct result. Why has this problem occurred, and how can it be solved? Here is the code that I am running:

diff <(sed '1d' 'todayFile.txt' | sort ) <(sed '1d' yesterdayFile.txt | sort ) | grep "^<" >> 'diff.TXT'
diff <(sed '1d' 'todayFile.txt' | sort ) <(sed '1d' yesterdayFile.txt | sort ) > temp.txt
 grep "^<" temp.txt
Binary file (standard input) matches

And this is the error text I receive:

Binary file (standard input) matches
binary file
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1 Answer

  1. Best Answer
    Expert

    The cause: By standard, TYPE is binary, and if a binary file matches, grep normally gives a single line of message, and vice versa. grep thinks that a binary file does not match if TYPE is without-match; this is similar to the -I option. Your input files most likely contain some unintelligible characters.

    Solution: grep analyzes the file and thinks it’s in binary mode if it detects any illegible characters. To make grep treat the file as readable text, you should insert the -a switch. For example:

    comm -13 <(...) <(...)

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