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@learntheropes
learntheropes / update_time
Created February 29, 2024 17:25
update time
sudo ntpdate -b time.nist.gov
@learntheropes
learntheropes / create_postgres_email_extension.sh
Created January 31, 2024 15:28
CREATE EXTENSION citext;
CREATE DOMAIN email AS citext
CHECK ( value ~ '^[a-zA-Z0-9.!#$%&''*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$' );
@learntheropes
learntheropes / change_password.sh
Created January 31, 2024 11:38
postgres change default user password
$ sudo -u postgres psql
psql (14.1 (Ubuntu 14.1-2.pgdg20.04+1))
Type "help" for help.
postgres=# \password postgres
Enter new password:
Enter it again:
@learntheropes
learntheropes / swap_zfs.sh
Last active July 5, 2023 03:37
Ubuntu set swap on a zfs drive
# https://askubuntu.com/questions/1198903/can-not-use-swap-file-on-zfs-files-with-holes/1198916#1198916
sudo zfs create -V 8G -b $(getconf PAGESIZE) -o logbias=throughput -o sync=always -o primarycache=metadata -o com.sun:auto-snapshot=false rpool/swap
sudo mkswap -f /dev/zvol/rpool/swap
sudo swapon /dev/zvol/rpool/swap
# Make the swap persistent after reboot
# https://www.digitalocean.com/community/tutorials/how-to-add-swap-space-on-ubuntu-20-04#step-5-making-the-swap-file-permanent
@learntheropes
learntheropes / bulma-card-overlay.vue
Last active April 4, 2022 06:53
<template>
<section class="section container">
<div class="card">
<div class="card-image">
<figure class="image is-4by3">
<img
src="https://bulma.io/images/placeholders/1280x960.png"
alt="Placeholder image"
/>
</figure>
@learntheropes
learntheropes / ledger.sh
Last active February 4, 2022 07:57
sudo wget -q -O - https://raw.githubusercontent.com/LedgerHQ/udev-rules/master/add_udev_rules.sh | sudo bash
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learntheropes / main.scss
Last active September 17, 2019 14:57
sass in nuxtjs with bulma
npm install --save-dev @nuxtjs/style-resources sass-loader node-sass
@learntheropes
learntheropes / debian_ubuntu_command_line.md
Created August 16, 2019 21:20
Debian/Ubuntu command line staff

Get timezone

timedatectl status | grep "Time zone"
@learntheropes
learntheropes / kbfs.md
Last active August 16, 2019 20:03
kbfs staff

Get ubuntu/debian default mountdir

printenv | grep $XDG_RUNTIME_DIR

If $XDG_RUNTIME_DIR exists, then KBFS is mounted at $XDG_RUNTIME_DIR/keybase/kbfs Otherwise is mounted at /home/user/.config/keybase/kbfs

Change mountdir




  


  




    


          
    

      

        
        

          

              @learntheropes
          

          

            
                learntheropes
                / ledgerjs-tetch-xpubkey-from-apps.js
            
            

              Created
              August 14, 2019 18:11
            

              
                https://github.com/LedgerHQ/ledgerjs/issues/156
              
          

        

      

        

  

    
    


        



  


  

        

          
          import { map, compose, dropLast, last, length } from 'ramda'
        

        

          
          import { crypto, HDNode } from 'bitcoinjs-lib'
        

        

          
          import * as BIP32 from 'bip32'
        

        

          
          import BIP39 from 'bip39'
        

        

          
          import Transport from "@ledgerhq/hw-transport-node-hid"
        

        

          
          import AppBtc from "@ledgerhq/hw-app-btc"
        

        

          
          import * as bippath from 'bip32-path'
        

        

          
          

        

        

          
          const mnemonic = 'deer scout bonus forward rubber rate embrace street tragic know wife tongue photo stool rival century cruise inspire cinnamon before sudden include strong flip'