It's over 9 years old (as of 2024-02-18), there are many better guides! You might like https://rust-unofficial.github.io/too-many-lists/
% Let's build a binary tree!
Let's build a binary tree of strings in Rust. To recap, each node in a binary tree:
| use std::io::{BufRead, BufReader}; | |
| use std::process::{Child, Command, Stdio}; | |
| fn main() { | |
| for id in 1..64_000 { | |
| let mut child = Command::new("echo").arg(id.to_string()) | |
| .stdout(Stdio::piped()).stderr(Stdio::piped()) | |
| .spawn().unwrap(); | |
| output(&mut child, false); | |
| child.wait().unwrap(); |
| [cargobomb-prod cargobomb]$ df -h | |
| Filesystem Size Used Avail Use% Mounted on | |
| devtmpfs 15G 92K 15G 1% /dev | |
| tmpfs 15G 72K 15G 1% /dev/shm | |
| /dev/xvda1 99G 31G 68G 31% / | |
| /dev/xvdb 985G 801G 134G 86% /home/ec2-user/cargobomb/work | |
| [cargobomb-prod cargobomb]$ df -h | |
| Filesystem Size Used Avail Use% Mounted on | |
| devtmpfs 15G 92K 15G 1% /dev | |
| tmpfs 15G 72K 15G 1% /dev/shm |
emtest("😇") = "ߘ"
| dd if=/dev/urandom bs=1M count=1000 of=/tmp/bigfile | |
| # Note! This will cause your computer to slow down while it puts | |
| # all files it's accessing back in memory | |
| sudo sync | |
| sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches' | |
| sleep 5 | |
| dd if=/tmp/bigfile bs=1M of=/dev/null |
| package main | |
| import ( | |
| "database/sql" | |
| "database/sql/driver" | |
| "net/http" | |
| "runtime" | |
| "time" | |
| ) |
| ``` | |
| 2013/11/22 18:15:26 2c9e825beb3b2c37d0a4d9c5625e10384bc6433c4a08a19b2092820a783bae4a: Failed to umount filesystem: Umount: Failed to umount /var/lib/docker/containers/2c9e825beb3b2c37d0a4d9c5625e10384bc6433c | |
| 4a08a19b2092820a783bae4a/rootfs | |
| panic: runtime error: close of closed channel | |
| goroutine 24 [running]: | |
| runtime.panic(0x8eb1e0, 0x101f915) | |
| /usr/local/go/src/pkg/runtime/panic.c:266 +0xb6 | |
| github.com/dotcloud/docker.(*Container).monitor(0xc210062c40) | |
| /go/src/github.com/dotcloud/docker/container.go:1232 +0x512 |
| set -e | |
| # Clean up previous test | |
| rm log.log || true | |
| rm -rf .git .hg .bup | |
| # Specify how our file is going to be constructed | |
| NUMS="00 01 02 03 04 05 06 07 08 09" | |
| F1="00 " | |
| F2="00 01 02 " |
| // ==UserScript== | |
| // @name CoffeeTest | |
| // @namespace test | |
| // @version 0.1 | |
| // @grant none | |
| // @require http://jashkenas.github.io/coffee-script/extras/coffee-script.js | |
| // @match http://example.iana.org/ | |
| // ==/UserScript== | |
| /* |
The instructions are:
$ go build udocker.go
$ chgrp docker udocker
$ chmod g+s udocker
$ mv udocker /usr/local/bin
I have performed the first three and therefore have this: