10,987 reputation
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bio website mattdm.org
location Somerville, MA
age
visits member for 3 years, 11 months
seen yesterday

I've been using Linux and Unix professionally since 1995, mostly in Linux-related sysadmin/systems architect jobs supporting academia. I generally know my stuff, but am very happy to learn something new and to be corrected when I'm wrong. Currently, I am the Fedora Project Leader.


Sep
19
comment How to remove a (group) of softwares that depend on one another?
Oooh. I don't think this is a duplicate. The grep-based solution is dangerous. Better to use yum's own wildcards or in some cases `yum --setopt="clean_requirements_on_remove=1"
Sep
17
comment Why is there an apt-get script set in my cron.daily, I'm on Fedora 20?
If you don't have any particular reason for it, I'd suggest removing it. The native package managers are much better maintained.
Sep
11
comment How to automate Linux server configuration?
@staticx Yes, this isn't comprehensive. There's a whole world of provisioning systems too: Cobbler, Foreman, Satellite/Spacewalk, FAI, Razor, and that's not even getting into cloud stuff.
Sep
11
comment Do files change while passing from ext2 to ext3 to ext4?
@StéphaneChazelas Edited for clarity.
Aug
30
comment Batch delete exif info
Thanks @Mark. Fixed.
Aug
5
comment Make many subdirectories at once
@StéphaneChazelas Yes. I just think it's a good habit to always use, unless there's a very good reason to use plain -exec. It's also the case that the depth options might not be needed at all in the specific scenario needed — could be just find * with the -depth option. (But they're good to generally be comfortable with!)
Jul
21
comment transfer a file to remote dir only if doesn't exist without replacing
What if the file is created in the meantime? Perhaps even more crucially, what if there is some other error in the first connection?
Jul
21
comment How do I diagnose a font rendering problem?
Perfect! Although substituting Arial for Helvetica might count as blasphemy; I went with MgOpen Moderna instead.
Jul
21
comment How do I diagnose a font rendering problem?
@Wilf Yes, I'm using that -- it says Helvetica Regular, and under that, smaller, "system"
Jul
12
comment Why does Alt+SysRq+B not always trigger while REISU do?
Yep! There are "gaming" or "professional" keyboards that do register all keys separately. Search for "n-key rollover", or NKRO. (Das Keyboard is one example. I have no affiliation with them except I love mine.)
Jul
10
comment How to install package via yum in Fedora
Please note that Fedora 15 reached end-of-life over two years ago, in June 2012. That means that security and bug fix updates are no longer produced. Please update to a current release. (Right now, F20 is your best bet!) Also, Fedora 15 was kind of a rough release, with early systemd and big changes to the desktop environments. Newer releases are a lot more polished.
Jul
10
comment Apache : Close entire site to public but display a custom page
This is nicely answered at stackoverflow.com/questions/3522921/…
Jun
20
comment How is it possible to do a live update while a program is running?
If you really want to do this with your own code, you might want to look at the programming language Erlang, where "hot" code updates are a key feature. learnyousomeerlang.com/relups
Jun
17
comment Red Hat internal specifications
That's a pretty big question!
Jun
17
comment Red Hat internal specifications
@MatheusSilva If this answer -- the direct, actual kernel parameters used! -- doesn't provide you what you need to know for your homework, then you need to clarify further what your homework actually asks.
Jun
17
comment Red Hat internal specifications
/proc/config.gz isn't usually compiled in on RHEL kernels. (Look in /boot for the config-* files instead -- why take up memory when a static file will do?
Jun
11
comment What is fedmsg?
If you want to create something that listens to this activity, because you want to make a service that reacts to it in some way, or if you want to display statistics, you might want it installed, but otherwise, you really don't need it.
Jun
11
comment What is fedmsg?
@HarryWeston It doesn't ease package installation. It's used in the Fedora Project infrastructure so our different services can communicate to each other. For, every time a package is built, a message goes out saying who was responsible. One consumer of those messages is the Fedora Badges system, where they are used to award the If you build it... or What goes up... (must come down) badges to deserving users.
May
15
comment Installing iPython3 Fedora 20
FWIW, here's the tracking bug to updating to the newer ipython version in Fedora. If anyone wants to help out with this, I'm sure help would be welcome. bugzilla.redhat.com/show_bug.cgi?id=1006575
May
9
comment Why can yum still not update GCC 4.9.0?
If you really don't want to wait, consider switching to Rawhide, Fedora's continuous development release. It's not quite for the faint of heart, as sometimes things break, but that's the price of following the latest versions of things. (Disclaimer: I'm a Fedora developer. Also, more on Rawhide in the middle of this blog post I wrote.)