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I have to find the following patterns in a text file 

\xc2d d\xa0 \xe7 \xc3\ufffdd \xc3\ufffdd \xc2\xa0 \xc3\xa7 \xa0\xa0

I start with finding \x occurrences and do this 

 grep "\\x" *.log | more

and nothing returns, is this query correct?

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  • Either the contents of your file is not the same as the one you showed us or the file does not end in .log. I ran the same query on a file with those exact lines in it and I got all the lines back (as I should have). Commented Jul 25, 2012 at 19:42

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I think you'll want to use single quotes instead of double quotes.

grep '\\x' *.log | more

Your shell is likely stripping that first backslash as part of the processing it does for strings in double quotes, which grep needs.

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