Linux – Show file size by type in Linux

linux

I'm trying to find out the total size of all files within a directory that have a particular extension.

I do some offsite backup via rsync but due to limited bandwidth and disk space at the other end I can't do everything, so I'd like to find out, for example, how much disk space MP3 files take up so I can decide whether to remove the mp3 extension from the current list of rsync excluded patterns.

It's not as simple as doing a 'du -sh' on the My Music directory in there as there's some other file types.

Thanks!

Best Answer

You can use du:

find Music/ -type f -name "*.mp3" -exec du -shc {} + | tail -1 | awk '{print $1}'

output example:

980M

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Linux – Identify files that would be deleted when removing an rsync –link-dest directory

A simple way would be to just use find with the -links option.

Specifically you would want to do something like find path -type f -links 1.

I haven't tested, but I believe a command like this would delete all the multi-linked files.

# you might not need to escape the !, depends on your shell
# should find all the files that do NOT have a link count of 1 and delete them
find path -type f \! links 1 -print -delete

Linux – rsync cannot delete non-empty directory

Use the p modifier:

A p indicates that a rule is perishable, meaning that it is ignored in directories that are being deleted. For instance, the -C option’s default rules that exclude things like "CVS" and "*.o" are marked as perishable, and will not prevent a directory that was removed on the source from being deleted on the destination.

For example, I use the -F option, which "tells rsync to look for per-directory .rsync-filter files that have been sprinkled through the hierarchy and use their rules to filter the files in the transfer."

My .rsync-filter contains lines like these to filter out these "droppings" that Macs leave behind them:

-p .DS_Store
-p ._*

If using exclude instead of just -, add a comma. For example :

exclude,p .DS_Store
exclude,p Thumbs.db

Best Answer

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Linux – Identify files that would be deleted when removing an rsync –link-dest directory

Linux – rsync cannot delete non-empty directory

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