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Why does grep think a file is binary?
As this answer notes, there are two cases where grep thinks your file is binary: if there’s an encoding error detected, or if it detects some NUL bytes. Holes are unwritten data and Unix mandates that they read as NUL bytes, so if a file has holes, it’s got NULs and so grep will call it a binary file.
Does SED work on binary files?
5 Answers. bbe is a “sed for binary files”, and should work more efficiently for large binary files than hexdumping/reconstructing. Further information on the man page.
Can you grep a binary file?
5 Answers. You can use grep anyway to search through the file – it does not really care if the input file is really text or not. From ‘man grep’: -a, –text Process a binary file as if it were text; this is equivalent to the –binary-files=text option.
Are images binary files?
Binary files can be used to store any data; for example, a JPEG image is a binary file designed to be read by a computer system. The data inside a binary file is stored as raw bytes, which is not human readable.
How does grep know if a file is binary?
If the first few bytes of a file indicate that the file contains binary data, assume that the file is of type TYPE. By default, TYPE is binary, and grep normally outputs either a one-line message saying that a binary file matches, or no message if there is no match.
When to use the-I option in grep?
If TYPE is without-match, grep assumes that a binary file does not match; this is equivalent to the -I option. If TYPE is text, grep processes a binary file as if it were text; this is equivalent to the -a option.
When to use without match in grep command?
If TYPE is without-match, grep assumes that a binary file does not match; this is equivalent to the -I option. If TYPE is text, grep processes a binary file as if it were text; this is equivalent to the -a option.
Why does grep-Q consume the whole input file?
You are confusing sed and grep. For the sed command, -2q is saying to quit the current iteration if at the second line, the -n option is saying to function quietly, so you will get all lines after the 2nd.