xcorvis

#!/usr/bin/env bash

set -Eeuo pipefail
trap cleanup SIGINT SIGTERM ERR EXIT

script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)

usage() {
  cat <<EOF
Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]

xcorvis

#! /bin/bash

if [ -z "$1" ]; then
    echo "Usage: $0 new-release-codename"
    echo "Example: $0 saucy"
    exit 1
fi

NEW_CODENAME="$1"

xcorvis

#!/usr/bin/env bash
# tests openssl ciphers against a host
# source: https://superuser.com/questions/109213/how-do-i-list-the-ssl-tls-cipher-suites-a-particular-website-offers

# OpenSSL requires the port number.
SERVER=$1
DELAY=1
ciphers=$(openssl ciphers 'ALL:eNULL' | sed -e 's/:/ /g')

echo Obtaining cipher list from $(openssl version).

xcorvis

#!/bin/bash
# clean up the current git directory a bit

# delete local branches that have been merged to master
# note that depending on your workflow, this could delete things you're still working on
( git checkout master && git pull ) || exit
( git branch -l --merged | egrep -v "\*|master|develop" | xargs git branch -D ) || exit

( git remote prune origin && git gc ) || exit

xcorvis

# locate old library files that are still in use, such as after an openssl update
sudo lsof -n | grep libssl | grep DEL 

# just the (truncated) names of the app using the library
sudo lsof -n | grep libssl | grep DEL | cut -c1-10 | sort | uniq

# Note that the names that services run as may also be useful for figuring out what needs to be restarted.

xcorvis

# Add a parameter to a line in a file using sed, where that parameter is missing or may already exist at any position.

# Example line:
PARAMS=quiet,splash,elevator=noop
# On the line that matches, if the entry is not present append it to the line
sed '/^PARAMS/ {/audit=1/! s/.*/\&,audit=1/}' grub.conf

# Example line:
PARAMS="quiet splash elevator=noop"
# Same as above but accounts for the trailing quote on the original string

xcorvis

# Two example one-liners for showing the lines of a file that that are less than x minutes old
# this is quite slow on large files
# uses older syslog date format
awk ' BEGIN { cmd="date -d \"-5 min\" +%s"; cmd | getline old; close(cmd); } { cmd="date -d \""$1" "$2" "$3"\" +%s"; cmd | getline d; close(cmd); if (d > old) print; } ' /var/log/syslog

# uses the slightly different date format
awk ' BEGIN { cmd="date -d \"-2 hour\" +%s"; cmd | getline old; close(cmd); } { cmd="date -d \""$1" "$2"\" +%s"; cmd | getline d; close(cmd); if (d > old) print; } ' /var/log/nginx/error.log

xcorvis

#!/bin/sh

if [ "$(id -u)" != 0 ] ; then
    echo This must be run as root!
    exit 1
fi

# Look for the most common cases
for driver in xhci_hcd ehci_hcd uhci_hcd ; do
    # Some distros need to use these instead: xhci-pci ehci-pci uhci-pci

xcorvis

Install virtualbox and qemu
qemu-img convert image.vmdk image_2.vmdk image.bin
VBoxManage convertdd image.bin image.vdi