Tuesday, January 27

<h1>Tuesday, January 27</h1>

what version of what linux distribution is this?
------------------------------------------------

Some luck _may_ be had with one or more of:

    root@beaglebone:~# uname -a
    Linux beaglebone 3.8.13-bone47 #1 SMP Fri Apr 11 01:36:09 UTC 2014 armv7l GNU/Linux

    root@beaglebone:~# lsb_release -a
    No LSB modules are available.
    Distributor ID:	Debian
    Description:	Debian GNU/Linux 7.8 (wheezy)
    Release:	7.8
    Codename:	wheezy

    root@beaglebone:~# cat /etc/debian_version 
    7.8

    root@beaglebone:~# cat /etc/dogtag
    BeagleBoard.org BeagleBone Debian Image 2014-04-23

    root@beaglebone:~# cat /etc/os-release 
    PRETTY_NAME="Debian GNU/Linux 7 (wheezy)"
    NAME="Debian GNU/Linux"
    VERSION_ID="7"
    VERSION="7 (wheezy)"
    ID=debian
    ANSI_COLOR="1;31"
    HOME_URL="http://www.debian.org/"
    SUPPORT_URL="http://www.debian.org/support/"
    BUG_REPORT_URL="http://bugs.debian.org/"

armhf
-----

[Is it armhf or armel?](https://blogs.oracle.com/jtc/entry/is_it_armhf_or_armel):

> During diagnosis, the question becomes, how can I determine whether my Linux
> distribution is based on armel or armhf?  Turns out this is not as
> straightforward as one might think.  Aside from experience and anecdotal
> evidence, one possible way to ascertain whether you're running on armel or
> armhf is to run the following obscure command:
>
>     $ readelf -A /proc/self/exe | grep Tag_ABI_VFP_args
>
> If the Tag_ABI_VFP_args tag is found, then you're running on an armhf system.
> If nothing is returned, then it's armel.  To show you an example, here's what
> happens on a Raspberry Pi running the Raspbian distribution:
>
>     pi@raspberrypi:~$ readelf -A /proc/self/exe | grep Tag_ABI_VFP_args
>     Tag_ABI_VFP_args: VFP registers
>
> This indicates an armhf distro, which in fact is what Raspbian is.  On the
> original, soft-float Debian Wheezy distribution, here's what happens:
>
>     pi@raspberrypi:~$ readelf -A /proc/self/exe | grep Tag_ABI_VFP_args
>
> Nothing returned indicates that this is indeed armel.

On a recent-ish Beaglebone Black:

    root@beaglebone:~# readelf -A /proc/self/exe | grep Tag_ABI_VFP_args
      Tag_ABI_VFP_args: VFP registers