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Many times I download an archive, extract it somewhere then remove the archive file from the disk (it’s just garbage). I have wondered if it’s possible to do everything on the fly, by one command only:
wget -O - http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.7.3.tar.bz2|tar -xjf -
So what I did was to download the tar.bz2 archive (wget) to the stdout file (-O -) and then, by using the Linux pipe (|), I’ve redirected the standard output and I’ve used it like an input (-) for the tar command.