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Darsey Litzenberger dlitz

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dlitz /
Last active May 11, 2022
btrfstune -m breaks btrfs scrub
# dlitz 2022
# This tests 'btrfstune -m' (change metadata_uuid) followed by 'btrfs scrub'.
# Apparently, changing the metadata_uuid causes btrfs scrub to spew
# uncorrectable errors, even on an empty filesystem.
# Changing the metadata_uuid back to the old value makes 'btrfs scrub' happy
# again.
set -eu
dlitz /
Created Apr 27, 2022
Shell script to split .djvu files into pages, one per file
# dlitz 2022
# SPDX-License-Identifier: CC0-1.0
set -eu
usage() {
echo "usage: $0 [-v] inputfile.djvu output-dir"
echo "Split a DjVu document into multiple pages, one per file."
echo "Use djvm -c to reassemble the file."
dlitz /
Created Nov 3, 2018
simple hello-world script
echo "Hello world!"
View gist:fa06580b8622f10707b0
# creates a signed cert using openssl. depends on Debian's default openssl.cnf.
def _ssl_ca_signed_certificate(self, private_key, subject,
ca_key, ca_cert):
# Generate a CSR
csr = self._ssl_self_signed_cert(
private_key, subject=subject, req=True)
# Make some FIFOs, where one end is inherited across execve()
r, w = os.pipe()
fcntl.fcntl(r, F_SETFD, fcntl.fcntl(r, F_GETFD) & ~FD_CLOEXEC)

Keybase proof

I hereby claim:

  • I am dlitz on github.
  • I am dlitz ( on keybase.
  • I have a public key whose fingerprint is 19E1 1FE8 B3CF F273 ED17 4A24 928C EC13 39C2 5CF7

To claim this, I am signing this object:

dlitz / fix-python-2.2-plat-linux3.patch
Created Feb 22, 2014
Fix Python < 2.7 looking for 'plat-linux3' instead of 'plat-linux2'
View fix-python-2.2-plat-linux3.patch
sys.platform should return "linux2" even if the system was compiled on Linux 3.x or later.
diff -ru Python-2.2.3.orig/configure Python-2.2.3/configure
--- Python-2.2.3.orig/configure 2003-03-29 14:25:14.000000000 -0800
+++ Python-2.2.3/configure 2014-02-22 14:37:36.540457776 -0800
@@ -641,6 +641,8 @@
case $MACHDEP in
+ linux1) MACHDEP="linux1";;
dlitz /
Created Jan 21, 2014
VMware Workstation kernel module patches VMware Workstation 9.0.2 & Linux kernel 3.12
# Inspired by the vmware-any-any-update series of patches
set -e
ws_ver=`vmware-installer -l | grep vmware-workstation | awk '{ print $2 }' | cut -d. -f1-3`
if [ -z "$ws_ver" ] ; then
echo >&2 "$0: error: VMware Workstation not installed?"
exit 1
View gist:6982406
diff --git a/lib/travis/github/services/fetch_config.rb b/lib/travis/github/services/fetch_config.rb
index 6d61dd7..542cd0a 100644
--- a/lib/travis/github/services/fetch_config.rb
+++ b/lib/travis/github/services/fetch_config.rb
@@ -11,7 +11,8 @@ module Travis
register :github_fetch_config
def run
- config = retrying(3) { parse(fetch) }
+ config = retrying(3) { parse(fetch(config_url)) }
dlitz / rails_bug_1210_schemadumper_monkeypatch.rake
Created Dec 20, 2011
Workaround for ActiveRecord bug that breaks table_name_prefix
View rails_bug_1210_schemadumper_monkeypatch.rake
# Extracted from Rails 2.3.10's active_record/schema_dumper.rb, with our patch applied.
# Put this into rakelib/rails_bug_1210_schemadumper_monkeypatch.rake in your Rails project
# see
# Copyright (c) 2004-2010 David Heinemeier Hansson
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
dlitz / gist:1314989
Created Oct 26, 2011
this is the test that happens for if, unless, etc.
View gist:1314989
RTEST(value) returns true if the value is implicitly true
#define RTEST(v) (((VALUE)(v) & ~Qnil) != 0)
#define Qfalse ((VALUE)0)
#define Qtrue ((VALUE)2)
#define Qnil ((VALUE)4)