Skip to content

Instantly share code, notes, and snippets.

View penglei's full-sized avatar

penglei penglei

37 followers · 40 following
View GitHub Profile
@penglei
penglei / network-restart.sh
Created January 25, 2021 08:16 — forked from tachang/network-restart.sh
Cleanly restart the default libvirt network
#!/bin/bash
#
# Yury V. Zaytsev <yury@shurup.com> (C) 2011
#
# This work is herewith placed in public domain.
#
# Use this script to cleanly restart the default libvirt network after its
# definition have been changed (e.g. added new static MAC+IP mappings) in order
# for the changes to take effect. Restarting the network alone, however, causes
# the guests to lose connectivity with the host until their network interfaces
@penglei
penglei / beamer-slides-with-notes.pdf
Created February 1, 2023 08:54 — forked from andrejbauer/beamer-slides-with-notes.pdf
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
@penglei
penglei / macos-ramdisk.md
Created May 12, 2023 15:28 — forked from htr3n/macos-ramdisk.md
Creating RAM disk in macOS

Built-in

diskutil erasevolume HFS+ 'RAM Disk' `hdiutil attach -nobrowse -nomount ram://XXXXX`

where XXXXX is the size of the RAM disk in terms of memory blocks.

Notes:

@penglei
penglei / nar-spec.md
Created April 20, 2024 02:33 — forked from jbeda/nar-spec.md
Nix Archive (NAR) file specification

This is taken directly from Figure 5.2 in http://nixos.org/~eelco/pubs/phd-thesis.pdf. It is presented here to be more directly linkable.

serialise(fso) = str("nix-archive-1") + serialise1(fso)

serialise1(fso) = str("(") + seralise2(fso) + str(")")

serialise2(type=Regular, exec, contents) =
  str("type") + str("regular")
 + (