19
votes
0answers
625 views

How to combine zsh autocomplete for wrapper function arguments and existing command

I work mostly in gvim and many terminals. Originally, I preferred to open all my files in a single vim instance. To that end I used an alias to open files from my terminals in the current 'vim ...
12
votes
0answers
722 views

Remapping keys that generate multiple scan codes

I have a ThinkPad W540. On its keyboard there are four multimedia keys above the numpad. Two of those keys generate keycodes (and, apparently, scancodes) that correspond to combination of keys, Win_L ...
11
votes
0answers
1k views

Monitor connected via displayport to DVI adapter won't sleep properly

I have a monitor connected to my machine that displays odd behavior when entering power saving sleep mode. When entering sleep, the monitor will alternate between blanking and displaying a default ...
11
votes
0answers
1k views

git completion with zsh: filenames with spaces aren't being escaped properly

Git completion: I'm having difficulty with git's filename autocompletions on my system. I'm using zsh (5.0.5) with git (1.9.3) on OS X (10.9.3). Both zsh and git have been installed via homebrew. ...
9
votes
0answers
477 views

Simplest possible secure sandboxing (limited resources needed)

I'm working on a project that implements distributed simulations: arbitrary code is executed on multiple nodes and the results are later collected and aggregated. Each node is an instance of an ...
9
votes
0answers
599 views

How can I get Mumble's overlay working?

Mumble and Team Fortress 2 (TF2) both work fine for me individually, but I cannot get mumble-overlay working, either independently or within TF2. I've tried putting the following launch options into ...
8
votes
0answers
68 views

How do cgroups interact with non-cgrouped processes?

I have 3 processes on a single core machine. Each process is exactly the same and burns CPU as fast as it can (tight loop). Two of them (A and B) are launched with cgexec in separate groups with ...
8
votes
0answers
67 views

agrep with directionally biased penalties

I am using tre-agrep (manpage), an implementation of agrep (manpage), to perform approximate pattern matching. This utility searches for matches based on Levenshtein distance, and the user can ...
6
votes
0answers
129 views

How to pause (or capture) the messages that fly by at the end of startup sequence?

Towards the end of the "startup sequence"1, I see a longish series of diagnostic messages fly by very quickly, right before I see the login prompt2. AFAICT, most, if not all, of the lines making up ...
6
votes
0answers
194 views

Linux iptables ssh port forwarding (martian rejection)

I have a Linux gateway performing NAT for my home network. I have another network which I'd like to transparently forward packets to, but only to/from specific IP/ports (ie. not a VPN). Here's some ...
6
votes
0answers
110 views

Why does OS X `install` errors on redirected input when the same version of `install` on linux works fine?

I would like to use install command in order to create a new executable file with pre-populated content (e.g. with single pwd command in it). So I've extended this example which creates a new empty ...
6
votes
0answers
359 views

Emacs slow loading time with AUCTeX on TeX files

I installed the auctex and emacs packages on two Xubuntu 14.04 computers, both of which have been working fine. Emacs itself works fine on both, but now with the auctex package installed, when I load ...
6
votes
0answers
237 views

Auto-switching PulseAudio profiles based on input(s) channel count

I'm running audio over HDMI to my receiver, which has a full 7.1 setup connected to it. However, most of the stuff that I listen to has far fewer channels—some is mono, most is stereo, a bit is 5.1. ...
6
votes
0answers
615 views

Why does `xvfb-run glxgears` fail with an swrast error?

xvfb is supposed to let me run X programs in a headless environment. But when I run xvfb-run glxgears, I get: libGL error: failed to load driver: swrast libGL error: Try again with ...
6
votes
0answers
2k views

git-upload-pack hangs indefinitely

I have the following call structure: Jenkins runs fab -Huser@host set_repository_commit_hash:123abc. set_repository_commit_hash runs git fetch with pty = False. The child process ssh git@github.com ...
6
votes
0answers
874 views

Rsnapshot destination full - how to safely rerun?

I ran my Rsnapshot backup today but my external drive became full half-way through the incremental backup (I have about 20 incremental backups now). rsync: write failed on "<path>": No space ...
5
votes
0answers
118 views

State of ZFS xattr support in FreeBSD

I'm trying to work out whether or not, or rather to what extend, xattrs are supported in FreeBSD using ZFS. I've read some conflicting information. zfs get xattr lists it as on (default) for /, /usr ...
5
votes
0answers
50 views

md raid5: translate md internal sector numbers to offsets

TL;DR summary: Translate an md sector number into offsets(s) within the /dev/mdX device, and how to investigate it with xfs_db. The sector number is from sh->sector in ...
5
votes
0answers
95 views

FreeBSD throttle cpu clock on high temperature

I'm using a laptop with bad cooling system, so my CPU sometimes hits very high temperature, and linux kernel is able to throttle cpu clock to cool it as I can see in dmesg: [22612.245243] CPU3: Core ...
5
votes
0answers
204 views

What is using 4GB of memory? (Not cache, not a process, not slab, not shm)

We have some EC2 servers that experience a memory leak over days or weeks. Eventually there gets to be many GB of memory that is used (according to tools like free and htop) and, if we don't restart ...
5
votes
0answers
165 views

Why are slab objects not reclaimed automatically

Everyday after a full system backup, various programs are failing with read errors until I run echo 2 > /proc/sys/vm/drop_caches to free reclaimable slab objects. For example, here's the output of ...
5
votes
0answers
71 views

enable external display on FreeBSD console

tl;dr, I'd like to use the external display with FreeBSD 10.0 on an HP Pavilion g7-2270us. Don't care if it's mirrored or I have to select one or the other. Here's the symptoms: When a display is ...
5
votes
0answers
116 views

How to delete a directory with multiple btrfs subvolumes?

My root file system is on a btrfs partition. My /chroot directory has a number of btrfs subvolumes in it which prevent me from deleting it with rm -rf /chroot. In an attempt to delete all the ...
5
votes
0answers
150 views

Prevent monitors from going to sleep in lock screen on GNOME

I have two monitors running on my Fedora 22 machine, however due to this bug sometimes the second monitor will not wake up after the computer goes to sleep, requiring me to unplug the DisplayPort ...
5
votes
0answers
63 views

Why kernel modesetting, instead of privilege separation?

Kernel modesetting was kind of painful to get on Linux at first, but now it's pretty awesome to have. I mean, X not need to run as root? High-res hardware accelerated consoles? Cool stuff. Problem ...
5
votes
0answers
186 views

allow regular users to use network namespaces

I have an architecture using network namespaces (netns). I would like to allow regular users to do some operations in these netns. I could write a script netns-exec.sh, inspired by this post, ...
5
votes
0answers
113 views

Where in GRUB2 source code is the handover/jump to kernel code?

I'm looking for the line of code where GRUB2 finally jumps to kernel code and thus hands over execution on x86 systems? I guess it's in an assembler file since this is very low architecture stuff. I ...
5
votes
0answers
116 views

How do I vmtouch a directory (not the files it contains)?

The vmtouch(8) tool allows locking a file or files in memory. It has recursive mode, but the directories are used just for discovering files and are not locked themselves. How do I lock a directory ...
5
votes
0answers
77 views

Why does gnome-keyring-daemon need the public key to cache the passphrase?

I have two Arch Linux machines with virtually identical setup, both running /usr/bin/gnome-keyring-daemon --daemonize --login. They both have the same SSH secret key, but only one of them has the ...
5
votes
0answers
560 views

Use desktop as bluetooth headset

My desktop's speaker is much better than my phones, so I want to use my desktop speakers in place of my cellphone's. It is inconvenient for me to use USB or the audio jack, so I am left with ...
5
votes
0answers
192 views

What are the differences between xdotool and xautomation?

xdotool and xautomation are two command line X11 automation tools. I've used the former for a while and only recently found out about the existence of the latter, and I'm curious to know what someone ...
5
votes
0answers
695 views

Why does Dropbox say “Killed” on Arch Linux?

I'm trying to install Dropbox on Arch Linux. I've installed both dropbox and dropbox-cli, at least to the point of having the binaries. When I run dropbox on its own, it just responds Killed in red ...
5
votes
0answers
184 views

How do I change key bindings based on which window is focused?

I have these lines in my i3 config right now: # Play/pause, prev, next bindcode 172 exec "/opt/playerctl/bin/playerctl play-pause" bindcode 173 exec "/opt/playerctl/bin/playerctl previous" bindcode ...
5
votes
0answers
101 views

How to make zsh correct remember my decision

I have enabled correction (I wouldn't call it autocorrection specifically because of this issue) in zsh by enabling setopt correct in my .zshrc. Now, when I type dtae in a terminal, I get: dtae ...
5
votes
0answers
142 views

Problem using Ctrl+Arrow keys in Vim when using Byobu with tmux

In Vim, I had set the Ctrl+Arrow keys to skip words. This works just fine when running Vim inside the gnome-terminal. However, when using byobu (tmux), it shows weird behavior : it deletes ...
5
votes
0answers
839 views

How to use terminal to access iCloud Drive when Finder is not running

I would like to access iCloud drive from Terminal in order to create an emergency backup. Unfortunately, my installation of Mac OS Yosemite is not operational, so I am using recovery mode to create my ...
5
votes
0answers
523 views

Change Zsh theme in Android Studio

I've recently jumped ship to zsh and I'm using the Oh my Zsh! theme blinks. It looks very nice in the OSX Terminal, but it looks very bad in Android Studio's terminal. So my question is is there a ...
5
votes
0answers
3k views

xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted)

I get this error in Xorg.0.log xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted) Googling quickly reveals that this error is caused by starting Xorg as non root user. ...
5
votes
0answers
321 views

change icon sizes in Gtk+ 3 applications

Using Gtk+ 2, I could use the gtk-icon-sizes option like this: gtk-icon-sizes = panel-menu=32,32:panel=32,32:gtk-menu=32,32:gtk-large-toolbar=64,64:gtk-small-toolbar=48,48:gtk-button=32,32 ...
5
votes
0answers
186 views

Changing the order of workspaces in Gnome Shell

In Gnome Shell, is it possible to change the sequence of workspaces by using drag-and-drop? For instance, is it possible to make Workspace 2 the uppermost one by dragging it above Workspace 1 (which ...
5
votes
0answers
814 views

Have tmux wait until I SSH in, to complete rest of Tmuxinator script

After recently discovering tmux and Tmuxinator, I've been trying to set up a development environment to use. Per protocol, we aren't allowed to store passwords/passphrases in scripts. So what I'm ...
5
votes
0answers
1k views

Dual monitors with 2 videos driver with xrandr 1.4

I'm trying to dual-screen with 2 differents video card drivers (i915 & nvidia) but as you can see xrandr is only listing nvidia provider. [x@epoch ~]$ xrandr --listproviders Providers: number : ...
5
votes
0answers
716 views

Netboot error: Invalid kernel argument

I'm trying to install Arch using the Netboot Live System following these steps: Install Syslinux on a SD card according to its wiki. Copy the iPXE kernel image to the SD card. Create an syslinux.cfg ...
5
votes
0answers
949 views

Autostart all LightDM seats and show one as default

I configured a media-center server running Debian with LightDM, Leapcast and Plex. What I want to accomplish is the following. There should be three LightDM seats, one default seat on which I can ...
5
votes
0answers
1k views

A real non-“better touch tools” solution for select-to-copy on Mac OS X

I recently moved to Mac. I am missing my X11 copy-paste style. I can't find a way to exactly emulate X11 behavior "select-to-copy", "middle-click-to-paste" globally on Mac OS X. I am aware that this ...
5
votes
0answers
2k views

Bad utf8 display with tmux

When I press the "é" key multiple times on my keyboard, here is what tmux print (notice the spaces) : arcanis@~ > é é é é é é é é é é é é é It also broke emacs when the file contains utf8 ...
5
votes
0answers
748 views

How to set up an encrypted directory to be mounted only during samba access?

(This is not about restricting client access, for which ext3 permissions do the trick) I'd like to encrypt the data on my NAS drive (Buffalo LinkStation Pro with SSH access enabled, if that matters) ...
5
votes
0answers
615 views

No access to symlink folder on NTFS partition

I am using an NTFS parition for storing data I like to access both from Ubuntu and Windows 7. On my Ubuntu HOME partition, I like to link the folder Assets in order to access it from an application ...
5
votes
0answers
579 views

How can I configure Yast to switch languages completely?

I have an installation of openSUSE 11.4 which was installed in German. I started Yast2 (which displayed in German, like "Netzwerkdienste") and switched the language to English under "System" -> ...
5
votes
0answers
434 views

Pop-up event reminders in Korganizer, when synchronizing with Google Calendar

I have "connected" my Google Calendar with Korganizer. I create an event within my Google account. I want pop-up reminders to show up when I go home, even though the events weren't create by ...

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