Does zgrep unzip a file before searching? [closed]

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Does zgrep unzip a gzip file and make a temporary copy before searching or does it search directly on the compressed file?

回答1:

This source of zgrep uncompresses the file with zcat and pipes the result to grep.

So, no, it does not use a temporary file, but yes, it decompresses (but not fully) before searching.

来源：https://stackoverflow.com/questions/45175030/does-zgrep-unzip-a-file-before-searching