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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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How to reliably(!) exclude files from a list in tar? (feddit.de)

submitted 4 months ago* (last edited 4 months ago) by MonkderDritte@feddit.de to c/linux@lemmy.ml

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This is bothering me for years now, my backup script always takes everything with it, taking forever to finish.

I initially used the --exclude option, but this is rather restrictive, cluttered the script and still had the excluded directories.
Then i discovered -X/--exclude-from but same result here, weird globbing and still fails.
So i hacked a negative list via fd's --ignore-file and tar -T/--files-from together. But tar still includes files and directories not on the fucking files.tmp.

So i'm not sure if it is a bug in Arch's GNU tar or if it's maybe a parameter in the wrong position, tar can be removed there. This is my current code

# tar -cf - -X "$XDG_CONFIG_HOME"/backup/ignore "$INPUT" -P

fd . -Hi --ignore-file "$XDG_CONFIG_HOME"/backup/ignore "${INPUT}" > "$_tmpfile"
tar -cf - --verbatim-files-from --files-from="$_tmpfile" -P \
	|pv -tapes "$_fssize" \
	|compress >"${OUTPUT}.$_ext"

INPUT is $HOME in this case.

And if anyone has a solution that works on busybox tar as well...

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[–] MonkderDritte@feddit.de 2 points 4 months ago* (last edited 4 months ago)

Thanks!

I save it for now, until i work on it again. Possibly the wildcards thing. And that tar includes files of folders given too, from someone else (how to work with that).