reading a zipped file without unzipping it

Category: UNIX-Unix Beginner

reading a zipped file without unzipping it?

dear all,
i would like to ask how i can read a zipped file (file.gz) without actually unzipping it?
i think there is a way to do so but i can't remember it..
can anyone help?

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either 'gzcat' or 'gunzip -c'