hmage.net

Hello and welcome to my (pretty much empty) site!

I make music, 3D art, I code, I DJ, I eat tea.

Music

You can listen to my music on Youtube.

If for some crazy reason you want to pay for music and support me financially, you can do this on iTunes, Amazon or Bandcamp.

I also have Twitter where I spam random nonsensical stuff — feel free to chat up with me there, I don't bite.

Projects

I also have some projects in various stages of completeness (and abandonment):

Random notes

This site is mainly used as my personal notepad for random scribbles – things and links that I want to keep preserved without re-hunting for them in the internet:

coding

Snippets:

  • C89 standard section 3.5.7 — omitted entries in the initalizer list are defaulted to being assigned 0. This is valid C89:
  • main() {
    int array[100] = {104, 5}; /* initializes rest to 0 */
    struct blah {int a; int b; char c; void* d;} blah = {10}; /* initializes rest to 0 */
    return 0;
}
  • Show which options -march=native will enable:
    gcc -march=native -Q --help=target

    alternatively more verbose 

    gcc -fverbose-asm -x c - -S -o - < /dev/null
  • Show difference in effective flags between -march=native and -march=haswell:
    diff -uw <(gcc -fverbose-asm -march=haswell -x c - -S -o - < /dev/null | sed "1,/options enabled/d") <(gcc -fverbose-asm -march=native -x c - -S -o - < /dev/null | sed "1,/options enabled/d")
  • Show GCC's built-in preprocessor defines:
    gcc -dM -E - < /dev/null | sort
  • Make git think ignore deletion of files, useful for big blobs:
    git ls-files --deleted -z | git update-index --assume-unchanged -z --stdin
  • Show default pkg-config search paths:
    pkg-config --variable pc_path pkg-config

security

unix

Snippets:

  • List installed dpkg packages sorted by size (in kilobytes): 
    dpkg-query -Wf '${Installed-Size}\t${Package}\n' | sort -n
  • Prevent an OSX partition from automounting in /etc/fstab: 
    UUID=FAB060E9-79F7-33FF-BE85-E1D3ABD3EDEA  none     hfs    rw,noauto
  • Tar into archive sorted by extension: 
    find directory | rev | sort | rev | tar cv -T - --no-recursion | xz > directory.tar.xz
  • Tame APT from getting translations and keep it from installing unwanted packages: 
    echo 'Acquire::Languages "none";' > /etc/apt/apt.conf.d/zz-local-tame
  • Prevent NTP server from panicking inside suspended VM's: 
    tinker panic 0
  • Remove duplicate lines without sorting:
    awk '!x[$0]++'
  • Avoid creating temporary files to feed as filename: 
    diff -u <(sort /etc/passwd) <(shuf /etc/passwd | sort)
  • Dump backtraces for all processes in pidlist: 
    for i in $pidlist; do gdb -batch -n -ex 'thread apply all bt' -p "$i"; done
  • Fix slow SMB on OSX 10.11+: 
    printf "[default]\nsigning_required=no\n" | sudo tee /etc/nsmb.conf >/dev/null
sudo defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server SigningRequired -bool FALSE
sudo /usr/libexec/smb-sync-preferences
  • To disable modesetting inside qemu, add this to kernel command line: 
    fbcon=map:99
  • Put Dropbox on OSX to use background IO scheduler:
    lldb -p `pgrep Dropbox`
expr (int)setiopolicy_np(0, 0, 3)
quit
  • Make time machine normal priority:
    sudo sysctl debug.lowpri_throttle_enabled=0
  • Force hostname instead of DHCP-given:
    sudo scutil --set HostName <newname>
  • Enable screen sharing from command line:
    sudo defaults write /var/db/launchd.db/com.apple.launchd/overrides.plist com.apple.screensharing -dict Disabled -bool false && sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.screensharing.plist
  • List all excluded items in Time Machine:
    sudo mdfind "com_apple_backup_excludeItem = 'com.apple.backupd'"
  • Show exclusions that were active in latest backup:
    sudo defaults read /Volumes/Time\ Machine\ Backups/Backups.backupdb/*/Latest/.exclusions.plist
  • Remount OSX volume with noatime:
    mount -vuwo noatime /Volumes/FADownloader
  • Make HFS+ volume acceptable for Time Machine on newer OSX:
    mkdir Backups.backupdb

Video

Browser-based benchmarks

Other

3D art

My 3D art is NSFW, so you'll have to find it yourself.