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Petr Michalec epcim

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epcim / gist:eac5083ae1ea5e8dc0e862d9dfa28fbd
Created Mar 12, 2019 — forked from mattm7n/gist:1405067
Monitor DHCP traffic with tcpdump
View gist:eac5083ae1ea5e8dc0e862d9dfa28fbd
# Monitoring on interface eth0
tcpdump -i eth0 -n port 67 and port 68
@epcim
epcim / gist:da40504103f2390f76ebcee4fe48e226
Created Mar 3, 2019 — forked from pwnsdx/gist:d127873e24cef159d4d603accaf37ee4
Uninstall XQuartz.app from OSX Yosemite/El Capitan/Sierra
View gist:da40504103f2390f76ebcee4fe48e226
launchctl unload /Library/LaunchAgents/org.macosforge.xquartz.startx.plist && \
sudo launchctl unload /Library/LaunchDaemons/org.macosforge.xquartz.privileged_startx.plist && \
sudo rm -rf /opt/X11* /Library/Launch*/org.macosforge.xquartz.* /Applications/Utilities/XQuartz.app /etc/*paths.d/*XQuartz && \
sudo pkgutil --forget org.macosforge.xquartz.pkg && \
rm -rf ~/.serverauth* && rm -rf ~/.Xauthorit* && rm -rf ~/.cache && rm -rf ~/.rnd && \
rm -rf ~/Library/Caches/org.macosforge.xquartz.X11 && rm -rf ~/Library/Logs/X11
@epcim
epcim / vimrc
Created Feb 4, 2019 — forked from jonmorehouse/vimrc
UUID generator for vim. Inputs a uuid to copy buffer
View vimrc
fu! GenerateUUID()
python << EOF
import uuid
import vim
# output a uuid to the vim variable for insertion below
vim.command("let generatedUUID = \"%s\"" % str(uuid.uuid4()))
EOF
@epcim
epcim / dhcpd.conf
Created Jan 16, 2019 — forked from robinsmidsrod/dhcpd.conf
Trying to chainload iPXE with full feature set from a lesser featured one, whilst still being able to boot non-supported cards with UNDI
View dhcpd.conf
ddns-update-style none;
deny bootp; #default
authoritative;
include "/etc/dhcp/ipxe-option-space.conf";
# GREEN (private network)
subnet 10.1.1.0 netmask 255.255.255.0 {
range 10.1.1.100 10.1.1.199;
option subnet-mask 255.255.255.0;
@epcim
epcim / _INSTALL.md
Created Jan 16, 2019 — forked from robinsmidsrod/_INSTALL.md
Bootstrapping full iPXE native menu with customizable default option with timeout (also includes working Ubuntu 12.04 preseed install)
View _INSTALL.md

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

View libvirt_kvm.rst

Using Libvirt and KVM

Installation

Install required packages
apt-get install qemu-kvm libvirt-bin bridge-utils virtinst
View jq-cheetsheet.md

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

View Terraform_functions.md

Supported built-in functions

  • abs(float) - Returns the absolute value of a given float. Example: abs(1) returns 1, and abs(-1) would also return 1, whereas abs(-3.14) would return 3.14. See also the signum function.

  • basename(path) - Returns the last element of a path.

  • base64decode(string) - Given a base64-encoded string, decodes it and returns the original string.

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