joeljacobs

function vmmem { free="$(free -h)";echo "$free";memtotal=0 ; for i in $(virsh list --name); do mem=$(( $(virsh dommemstat $i |head -1|cut -d " " -f 2) /1024/1024));memtotal=$(( $memtotal + $mem)); printf "%-20s%10s\n" $i $mem; done; echo " Total VM ${memtotal}G"; echo "  Difference: $(( $(echo "$free" |grep "Mem:"|cut -d " " -f 12|rev|cut -c 2-|rev) - $memtotal))G"|sort -V; }

joeljacobs

function zfsswap { pool=${1-rpool}; gigs=${2-50};zfs create -V ${gigs}G -b $(getconf PAGESIZE) -o compression=zle -o logbias=throughput -o sync=always -o primarycache=metadata -o secondarycache=none -o com.sun:auto-snapshot=false $pool/swap &&  mkswap -f /dev/zvol/$pool/swap && echo /dev/zvol/$pool/swap none swap defaults 0 0 >> /etc/fstab && swapon -av ; }

joeljacobs

#!/bin/bash



if [[ $1 == "" ]]
then
  echo "You must specify the copy-to device as the first argument"
  echo "You may also specify a source device as the 2nd argument. Default= mmcblk0"
  echo "If you want no prompts and incremental, specify -a as the last argument"
  echo "i.e.: backup sda [nbd0] [-a]"

joeljacobs

#!/bin/bash

## Get my external IP

timeout=2   # seconds to wait for a reply before trying next server
#verbose=1   # prints which server was used to STDERR

dnslist=(
    "dig +short            myip.opendns.com        @resolver1.opendns.com"
    "dig +short            myip.opendns.com        @resolver2.opendns.com"

joeljacobs

Below are single-line commands to run in BASH on a Raspberry Pi to rewrite the toner chips to "full" for a Ricoh SP C250DN Printer.

You will need to have the 4 files below in the same directory: "black" "cyan" "magenta" and "yellow". 
The chip is near one edge of the cartridge. The pad closest to the edge is GND, followed by VCC, DATA, and Clock.
On the Pi, connect VCC and GND to +3.3V and GND. Connect Data to (physical numbering) 3 and 5. They are the I2C Data and Clock pins.

Be sure i2c is enabled and installed. 
modprobe -r i2c_bcm2708 ;modprobe i2c_bcm2708 baudrate=9600

joeljacobs

#!/bin/bash

OPTS=`getopt -o vhns: --long service:,sha:,server: -n 'parse-options' -- "$@"`
fail=false

if [ $? != 0 ] ; then echo "Failed parsing options." >&2 ; exit 1 ; fi

eval set -- "$OPTS"
servers=()
while true; do

joeljacobs

filldisk(){
DISKNUM=$2 
if [[ ! $2 =~ [0-9] ]]; then echo must specify disk num as 2nd arg;return 1;fi
SKIP="${3:-0}"
BS="${4:-4}"
SIZE=$(( (2 * 1024 *1024) - ($SKIP * 1024) ))
gnumfmt --format=%.3f --to=iec --from=iec ${SIZE}M\

case $1 in
random)

joeljacobs

docker ps --format 'table {{.ID}}|{{.Image}}|{{.Command}}|{{.RunningFor}}|{{.Status}}|{{.Ports}}|{{.Names}}'|sed -e 's/dev\.perfectpitchtech\.com:4567\/service\///' -e 's/\(^.*|.*|.*|.*|.*|\)\(.*\)\(|[^|]*$\)/\1+\2+\3/' -e 's/\(\|[a-z0-9]\{3\}[^\.]+\)\(\.[^|]\{4\}\)[^|]*$/\1\2\.\.\./'|(while read jerk; do ports=$(echo "$jerk"|sed 's/\(^.*+\)\(.*\)\(+.*$\)/\2/');newports=$(echo $ports|sed -e 's/\/[ut][dc]p\(,\)* */\1/g'|cut -c 1-12); echo $jerk|sed "s/+.*+/${newports}.../"; done)|column -tns "|"

joeljacobs

# du with only 1 filesystem
du -achxd1 |sort -h

# Ubuntu14 Service Management
update-rc.d -f <service> remove
service --status-all

joeljacobs

  #$pp_num_raw = split($::hostname, 'pp')[1]
  #$pp_num = sprintf("%0#2i", $pp_num_raw)
  #$pp_num = split($::hostname, 'pp')[1].sprintf"%0#2i"
  #$pp_num = sprintf("%0#2i", "${::hostname}".split('pp')[1])
  $pp_num = sprintf("%0#2i", "${::hostname}".match(/(pp)([0-9]+)([^[0-9]]*)/)[2])
  ["api", "live", "upload"].each|$local_suffix|{
    file { "/etc/nginx/conf.d/ppcc.local.$local_suffix":
      content => template("pp_nginx_manager/conf.d/ppcc.local.${local_suffix}.erb"),
      ensure  => present,
    }