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linuxgrepasciiextended-ascii

How to use grep command for count extended ASCII characters

I have a file which contains Inverted exclamation mark, I want to count number of occurrences of these inverted exclamation marks using Linux grep command.

I have tried hex representation of this character as follows. but it is returning complete file , not exactly the lines which are matching this text. 

grep -v "["$'\xA1'"]" K2345061.005

Thanks in advance for sharing any idea on this issue.

Solution

  • If your grep supports the -P flag for PCRE regex syntax, you can use that:

    $ echo -e '\xa1Ay caramba!' > /tmp/a1.dat
$ grep -P '\xa1' /tmp/a1.dat 
¡Ay caramba!