An introduction to curl
using GitHub's API.
Makes a basic GET request to the specifed URI
curl https://api.github.com/users/caspyin
An introduction to curl
using GitHub's API.
Makes a basic GET request to the specifed URI
curl https://api.github.com/users/caspyin
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
#!/usr/bin/env bash | |
# This script prints out all of your Redis keys and their size in a human readable format | |
# Copyright 2013 Brent O'Connor | |
# License: http://www.apache.org/licenses/LICENSE-2.0 | |
human_size() { | |
awk -v sum="$1" ' BEGIN {hum[1024^3]="Gb"; hum[1024^2]="Mb"; hum[1024]="Kb"; for (x=1024^3; x>=1024; x/=1024) { if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x]; break; } } if (sum<1024) print "1kb"; } ' | |
} |
# delete local tag '12345' | |
git tag -d 12345 | |
# delete remote tag '12345' (eg, GitHub version too) | |
git push origin :refs/tags/12345 | |
# alternative approach | |
git push --delete origin tagName | |
git tag -d tagName |
# save it as /etc/profile.d/ssh-telegram.sh | |
# use jq to parse JSON from ipinfo.io | |
# get jq from here http://stedolan.github.io/jq/ | |
USERID="<target_user_id>" | |
KEY="<bot_private_key>" | |
TIMEOUT="10" | |
URL="https://api.telegram.org/bot$KEY/sendMessage" | |
DATE_EXEC="$(date "+%d %b %Y %H:%M")" | |
TMPFILE='/tmp/ipinfo-$DATE_EXEC.txt' | |
if [ -n "$SSH_CLIENT" ]; then |
<?php | |
/** | |
* Trait UopzTrait | |
* | |
* Useful wrapper for uopz library's functions | |
*/ | |
trait UopzTrait | |
{ | |
/** |
package dk.im2b | |
import java.io.OutputStream | |
import java.net.ServerSocket | |
import java.net.Socket | |
import java.nio.charset.Charset | |
import java.util.* | |
import kotlin.concurrent.thread | |
(This is still a work-in-progress)
As of 2019-04-02 the following PR is has been merged into master which implements channel backups
See also https://twitter.com/alexbosworth/status/1112857863393763329
SCB has been merged into the lnd master branch:
lightningnetwork/lnd#2313 …
It allows for a small backup file to be made to recover a
data-lost channel's funds with peer cooperation. The file