pv   1601

« earlier    

UtilityAPI - Business Products
they sell a software product that lets you get access to your customers' utility data - could be a good integration
solar  pv  software  dep  data 
6 days ago by aaronbeekay
Energy Toolbase | Proposal Tools for Solar PV and Energy Storage
Pretty impressive proposal tool. Is this better than doing it ourselves?
dep  solar  pv  tool  software 
6 days ago by aaronbeekay
9 Really Useful Tricks With pv- Pipe Viewer
1) Simulate typing
echo "You can simulate on-screen typing just like in the movies" | pv -qL 10
This will output the characters at 10 per second.

2) Monitor progress of a command
pv access.log | gzip > access.log.gz
Pipe viewer is a terminal-based tool for monitoring the progress of data through a pipeline. It can be inserted into any normal pipeline between two processes to give a visual indication of how quickly data is passing through, how long it has taken, how near to completion it is, and an estimate of how long it will be until completion.

3) live ssh network throughput test
yes | pv | ssh $host "cat > /dev/null"
connects to host via ssh and displays the live transfer speed, directing all transferred data to /dev/null

4) copy working directory and compress it on-the-fly while showing progress
tar -cf - . | pv -s $(du -sb . | awk '{print $1}') | gzip > out.tgz

What happens here is we tell tar to create “-c” an archive of all files in current dir “.” (recursively) and output the data to stdout “-f -“. Next we specify the size “-s” to pv of all files in current dir. The “du -sb . | awk ?{print $1}?” returns number of bytes in current dir, and it gets fed as “-s” parameter to pv. Next we gzip the whole content and output the result to out.tgz file. This way “pv” knows how much data is still left to be processed and shows us that it will take yet another 4 mins 49 secs to finish.

5) Copy a file using pv and watch its progress
pv sourcefile > destfile
pv allows a user to see the progress of data through a pipeline, by giving information such as time elapsed, percentage completed (with progress bar), current throughput rate, total data transferred, and ETA. (man pv)

6) Another live ssh network throughput test
pv /dev/zero|ssh $host 'cat > /dev/null'
connects to host via ssh and displays the live transfer speed, directing all transferred data to /dev/null

7) dd with progress bar and statistics
sudo dd if=/dev/sdc bs=4096 | pv -s 2G | sudo dd bs=4096 of=~/USB_BLACK_BACKUP.IMG
This command utilizes ‘pv’ to show dd’s progress.

Notes on use with dd:

— dd block size (bs=…) is a widely debated command-line switch and should usually be between 1024 and 4096. You won’t see much performance improvements beyond 4096, but regardless of the block size, dd will transfer every bit of data.

— pv’s switch, ‘-s’ should be as close to the size of the data source as possible.

— dd’s out file, ‘of=…’ can be anything as the data within that file are the same regardless of the filename / extension.

8) [re]verify a disc with very friendly output
dd if=/dev/cdrom | pv -s 700m | md5sum | tee test.md5
[re]verify those burned CD’s early and often – better safe than sorry –

at a bare minimum you need the good old `dd` and `md5sum` commands,

but why not throw in a super “user-friendly” progress gauge with the `pv` command –

adjust the “-s” “size” argument to your needs – 700 MB in this case,

and capture that checksum in a “test.md5” file with `tee` – just in-case for near-future reference.

*uber-bonus* ability – positively identify those unlabeled mystery discs –

for extra credit, what disc was used for this sample output?

9) time how fast the computer reads from /dev/zero
pv /dev/zero > /dev/null
my stats 217GB 0:00:38 [4,36GB/s]
linux  shell  command  pv 
14 days ago by iteruel
'Digital Grid Router' Used to Transfer Solar Electricity - News - Solar Power Plant Business
Close but not quite P2P distributed generation, and thankfully without a blockchain. But without a central ISO operator to manage the external controller, this seems a little stunted.
distributed  generation  solar  PV  home  energy  storage  battery  HEMS  grid  management  power  generator 
14 days ago by asteroza
has released the new Feed-in-Tariffs for 2019. rates look promising. is below expectati…
Offshore  Taiwan  PV  Wind  from twitter_favs
6 weeks ago by schee
DRP-3200-MEAN WELL Switching Power Supply Manufacturer
This is a pretty small (1/4U?) 3.2kW rack mount rectifier. It's only 24/48V output, but isolated.... they could be stacked ...?
dcdc  powerconversion  rectifier  dep  pv 
8 weeks ago by aaronbeekay
High-Reliability Power Supplies
ugh, this is a really obnoxiously defense-focused presentation but should follow up on power supplies
dcdc  inverter  powersupply  powerconversion  dep  pv 
8 weeks ago by aaronbeekay
P2 Panelboards
got excited about this series from Siemens because their installer training has these listed at 500Vdc (“Z” voltage rating in the part number) - but this doc has them at 250Vdc...? need to investigate more
panelboard  powerdistribution  distribution  ul67  dep  pv  microgrid 
8 weeks ago by aaronbeekay
Basics of Panelbaoards
Siemens course with info on fundamental panel board specification criteria and junk, pleasantly beginner-level
dep  pv  ul  regulation  electrical  learning 
8 weeks ago by aaronbeekay
Low Voltage Panelboards
can’t tell if they’re specifying dc ratings
ul67  pv  dep  panelboard 
8 weeks ago by aaronbeekay
Firefighter Safety and Photovoltaic Installations Research Project
Underwriters Laboratories examined fire service concerns of photovoltaic (PV) systems. These concerns include firefighter vulnerability to electrical and casualty hazards when mitigating a fire involving photovoltaic (PV) modules systems

this looks like a fun job lol
safety  ul  regulation  pv  dep 
8 weeks ago by aaronbeekay
OpenNEM: An Open Platform for National Electricity Market Data
Historical market data for Australian Energy Market Operator (AEMO) with energy sources and loads
energy  renewable  NEM  AEMO  electricity  market  greenhouse  gas  GHG  emissions  carbon  coal  hydro  wind  solar  photovoltaics  pv  battery  batteries  grid  biomass  natural 
9 weeks ago by adriaanbw

« earlier    

related tags

1.5economics  1980s  1983  1984  1986  1987  1988  1989  1990s  1992  1994  1996  1999  2000  2000s  2002  2009  2010s  2011  2016  2017  2018  2019  across  aemo  afci  africa  age_of_chance  agrovoltaics  air  alternative_energy  animation  architecture  array  atomic  ausgrid  australia  automation  aws  ballon  banda  base  batteries  battery  beam  behavior  berlinski  big_ron  bigzam  biomass  biomimicry  black  ble  bluetooth  box  bricks_are_heavy  bruce_cockburn  bueninvento  business  canada  canadian  carbon  case  catalyst  catchy  cell  cells  charger  charging  chinese  chunyan  cleanenergycosts  clientele  coal  code  cola  colloidal  command  commercial  comparison  concentrating  contactor  continent  controls  cooling  cost  cover  cpv  cracking  crime  crush_collision  crystalline  csp  dance  data  db  dcdc  dd  defer  dep  deposition  developments  devices  dh  dhcp  didyouknow  dirty_computer  distributed  distribution  diverter  diy  dot  drone  dronebox  droneport  dual  e-auto  eb  efficiency  el_coyote  electric  electrical  electricity  electrolysis  electromechanical  electronics  elektro  embedded  emissions  emitter  energy  energycosts  energystudy  engineering  england  environment  esa  eu  eupvsec  europe  eva  evidence  exports  farmers  fhqwhgads  floating  fronius  fujitsu  förderungen  gas  generation  generator  ghg  giant_sand  github  glum  grandfather  grandmother  green  greenfields  greenhouse  grid  gtm  hangar  hardware  hems  high  hiphop  home  homestarrunner  humor  hybrid  hydro  hydrogen  incentives  increase  indie_rock  industrial  insel  insolation  inverter  iot  ir  itc  its  j-pop  janelle_monáe  january  japanese  jinko  john_peel  jose_angel_ledesma  jpop  js  julieta_venegas  junction  k8s  ko_wen-je  l7  landing  laser  layer  learning  leeds  lemon_twigs  liberia  life  lightweight  linux  lithium-ion  load  log  long  love  ma  magazine  maki_ohguro  management  mangels  manufacturing  market  massachusetts  materials  maxim  mb  mcc  merge_records  meter  mexico  microgrid  microgrids  mls  mmb  mobility  modeling  monitoring  motors  mounting  multicrystalline  multijunction  music  nanoparticle  narrowband  natural  nec  nem  networks  new_edition  new_jack_swing  newengland  news  nostalgia  novascotia  november  nuclear  offgrid  offshore  openshift  optimisation  optimiser  oxford  oxide  panel  panelboard  panels  paper  pdf  perovskite  persistent  photocathode  photovoltaic  photovoltaics  pl  platform  politician  politics  pop  portfolio  power  power_of_dreams  powerconversion  powerdistribution  powersupply  prices  prince  production  punk  pvoutput  quantum  r&b  ralph_tresvant  randy_rainbow  rap  rebates  recharger  recharging  rectifier  recycling  reddit  regulation  renewable  renewables  republican  research  response  retro  reuse  rff  rhodium  rock  roof  rooftop  router  routing  rupert  sachiko_suzuki  safety  sarah_huckabee_sanders  savings  science  sence  sensor  sheldrake  shell  shifting  shōko_aida  silicon  sk  smart  software  solar  solaredge  solarquotes  song  sonnen  soul  space  spanish  spin  standards  start  starting  stealing_fire  steven_e  storage  stratosolar  strongbad  superstition  switch  sydney  taipei  taiwan  takedown  tandem  tanzania  tapete_records  tata  technology  tethered  time  titanium  to  tool  trade  transfer  trap  turbine  u.k.  uav  ubiquiti  ul  ul67  unsw  up  usa  utilisation  vawt  video  volumes  water  westernpower  whirlpool  white_house  wind  wink  wireless  world  wpt  youtube    ウィンク  大黒摩季  日本語  春艷  柯文哲  相田翔子  鈴木早智子 

Copy this bookmark: