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@derekp7
derekp7 / gist:9978986
Last active November 25, 2024 03:57
RPC in Bash (rpcsh)

Let's say you have a Bash shell script, and you need to run a series of operations on another system (such as via ssh). There are a couple of ways to do this.

First, you can stage a child script on the remote system, then call it, passing along appropriate parameters. The problem with this is you will need to manually keep the remote script updated whenever you change it -- could be a bit of a challenge when you have something to execute on a number of remote servers (i.e., you have a backup script running on a central host, and it needs to put remote databases in hot backup mode before backing them up).

Another option is to embed the commands you want to run remotely within the ssh command line. But then you run into issues with escaping special characters, quoting, etc. This is ok if you only have a couple commands to run, but if it is a complex piece of Bash code, it can get a bit unwieldy.

So, to solve this, you can use a technique called rpcsh -- rpc in shell script, as follows:

First, place th

@artyom
artyom / rpc-tls-client.go
Last active October 9, 2023 15:44
Go RPC over TLS.You have to create the following keys: certs/client.crt, certs/client.key, certs/server.crt, certs/server.key. client.crt and server.crt should be signed with ca.crt, which should be concatenated to both client.crt and server.crt. It's easier to do with easy-rsa: http://openvpn.net/index.php/open-source/documentation/howto.html#pki
package main
import (
"crypto/tls"
"crypto/x509"
"log"
"net/rpc"
)
func main() {
@elazarl
elazarl / cp.go
Last active June 27, 2020 14:42
Unfortunately, searching for "golang copy file" gives subtly wrong code snippets (e.g. https://groups.google.com/d/msg/golang-nuts/JNyQxQLyf5o/kbGnTUK32TkJ that don't check close error code). This is an attempt to copy file content from `src` to `dst`
package cp
import (
"io"
"os"
)
func cp(dst, src string) error {
s, err := os.Open(src)
if err != nil {
@frsyuki
frsyuki / my_thoughts_on_msgpack.md
Created June 11, 2012 02:36
My thoughts on MessagePack

My thoughts on MessagePack

Hi. My name is Sadayuki "Sada" Furuhashi. I am the author of the MessagePack serialization format as well as its implementation in C/C++/Ruby.

Recently, MessagePack made it to the front page of Hacker News with this blog entry by Olaf, the creator of the Facebook game ZeroPilot. In the comment thread, there were several criticisms for the blog post as well as MessagePack itself, and I thought this was a good opportunity for me to address the questions and share my thoughts.

My high-level response to the comments

To the best of my understanding, roughly speaking, the criticisms fell into the following two categories.

@ismasan
ismasan / ws_events_dispatcher.js
Last active July 4, 2024 03:14
/*
The MIT License (MIT)
Copyright (c) 2014 Ismael Celis
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is