Which is the fastest way to run grep?
You could also run it on several different machines through SSH (ssh-agent needed to avoid passwords): If you’re searching very large files, then setting your locale can really help. GNU grep goes a lot faster in the C locale than with UTF-8. Ripgrep claims to now be the fastest.
Which is faster GNU grep or UTF-8?
GNU grep goes a lot faster in the C locale than with UTF-8. Ripgrep claims to now be the fastest. -j, –threads ARG The number of threads to use. Defaults to the number of logical CPUs (capped at 6). [default: 0]
Which is faster, grep or MCE _ grep?
In addition, mce_grep does not sub-shell (sh -c /path/to/grep) when calling the binary. Another alternate is the MCE::Grep module included with MCE. A slight deviation from the original topic: the indexed search command line utilities from the googlecodesearch project are way faster than grep: https://github.com/google/codesearch:
What kind of algorithm does GNU grep use?
GNU grep uses the well-known Boyer-Moore algorithm, which looks first for the final letter of the target string, and uses a lookup table to tell it how far ahead it can skip in the input whenever it finds a non-matching character.
Which is faster to index a folder grep or codesearch?
A slight deviation from the original topic: the indexed search command line utilities from the googlecodesearch project are way faster than grep: https://github.com/google/codesearch: Once you compile it (the golang package is needed), you can index a folder with:
How to grep a big file in parallel?
If you have a multicore CPU, I would really recommend GNU parallel. To grep a big file in parallel use: It’s not entirely clear from you question, but other options for grep include: Dropping the -i flag. Setting a max number of matches with the -m flag. Remove the -i option, if you can, case insensitive is quite slow. Replace the . by \\.