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3

As per struct usb_device: urbnum number of URBs submitted for the whole device where URB stands for USB Request Block. An URB consists of all relevant information to execute any USB transaction and deliver the data and status back. See also: Kernel Documentation USB Urbs


1

The docs packages contains the documentation set for the related package. These should be installed in /usr/share/doc/ directory tree. You can browse this directory for the installed documentation packages. If you have the apache web server package installed, you can browse http://localhost/doc to view the documentation. This is normally restricted to ...


0

I found that btrfs filesystem df <mountpoint> gives a report like this: Data, single: total=1.45TiB, used=1.45TiB System, single: total=4.00MiB, used=0.00 System, RAID5: total=16.00MiB, used=176.00KiB Metadata, single: total=8.00MiB, used=0.00 Metadata, RAID5: total=3.00GiB, used=1.82GiB which shows what I wanted to check on: that metadata is ...


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$ man -K "fopen" gives you the output /usr/share/man/en/man3/fclose.3.gz? [ynq] y to open/display man page n to continue search q to Quit search


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There used to be a nice table on the getting started page of the Btrfs wiki that would guide you what to do with the btrfs tools shipping with your distribution (or what not to do). I recommend taking a look at the features of newer versions (up to 3.19) on the ChangeLog page, and consider downloading and compiling the source of a newer version. The ...


2

Use the global apropos option in man. -K, --global-apropos Search for text in all manual pages. This is a brute-force search, and is likely to take some time; if you can, you should specify a section to reduce the number of pages that need to be searched. Search terms may be simple strings (the default), or regular expressions if the ...


5

From man man: -K, --global-apropos Search for text in all manual pages. This is a brute-force search, and is likely to take some time; if you can, you should specify a section to reduce the number of pages that need to be searched. Search terms may be simple strings (the default), or regular expressions if the --regex ...


0

The first one is EINVAL (a standard POSIX C error) inverted. If you are curious it's from line 4218 in [src]/drivers/usb/core/hub.c (v. 3.19): 4217 if (udev->state != USB_STATE_DEFAULT) 4218 return -EINVAL; The other one is from the hub_port_init() function in the same file. These kinds of error messages aren't really intended to provide ...



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