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SSH ProxyCommand unusual use cases

Last years, with modern IaC tools, ssh command and protocol feel less important. More tasks are done by crafting disposable software stacks in docker images, and by setting centralised observability solutions. And ssh acts as a «last resort» manual tool.

But software is still running on the servers, and we need access to those servers sometimes. Additionally, physical resource configuration still needs to be managed, and ssh is a standard way to do this.

Using ssh is easy. Public key authentication imposes some additional learning. After you'll get used to it, ssh becomes some transparent routine.

ssh allows you to customise configuration with a set of Host and Match rules in the config file. When the host alias matches one of those rules, the following configuration options apply to the connection. Some ssh configuration options can be used with percent interpolated variables, such as %h for user-requested host alias.

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const accessToken = 'YOUR_GITHUB_ACCESS_TOKEN';
const repoOwner = 'REPO_OWNER';
const repoName = 'REPO_NAME';
const productionTag = 'production/<number>';
const targetBranch = 'development';

async function findRecentReleaseCommit(branch) {
  const accessToken = 'YOUR_GITHUB_ACCESS_TOKEN'; // Replace with your GitHub access token
  const url = `https://api.github.com/repos/${repoOwner}/${repoName}/commits?sha=${branch}`;

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const AWS = require('aws-sdk');
const dns = require('dns');
const fs = require('fs');

// Set your AWS credentials and Region
AWS.config.update({
  accessKeyId: 'YOUR_ACCESS_KEY',
  secretAccessKey: 'YOUR_SECRET_ACCESS_KEY',
  region: 'us-east-1', // Change to your desired AWS region
});

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#!/bin/sh

. /lib/functions.sh
. /lib/functions/system.sh

get_model_name () {
	cat /proc/device-tree/compatible | tr -s '\000' '\n' | head -n 1
}

get_oem_data_parser () {

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const fs = require('fs').promises;

const { parse } = require('acorn');
const acornWalk = require('acorn-walk');

// Important limitations:
// Variables in attributes cannot be processed automatically, converter will throw in that case
// Whitespace and source comments lost sometimes, especially in first argument
// Constructs like x.difference(y), z.union(a, b, c) probably not supported - need parameter reordering
// If you see it not works and want to add support for that, modify `cluster.chunks.reduce` in `processCluster`

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function FindProxyForURL(url, host) {
  if (
    dnsDomainIs(host, ".rutracker.org")
    || dnsDomainIs(host, ".lostfilm.tv")
  ) {
    return "PROXY 10.10.10.200:18080; DIRECT";
  } else {
    return "DIRECT";
  }
}

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Switching from russian to english version for aliexpress

Open Console from Developer tools on *.aliexpress.com, then enter

document.cookie = document.cookie.split ('; ').filter (v => v.match (/^aep_usuc_f/))[0].replace ('site=rus', 'site=glo').replace ('b_locale=ru_RU', 'b_locale=en_US') + '; domain=.aliexpress.com';
document.cookie = document.cookie.split ('; ').filter (v => v.match (/^intl_locale/))[0].replace ('ru_RU', 'en_US') + '; domain=.aliexpress.com';

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#!/bin/sh

. /lib/functions.sh
. /lib/functions/system.sh

get_board_name () {
	cat /proc/device-tree/compatible | tr -s '\000' '\n' | head -n 1
}

mtd_get_cstring () {

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1. Select menu item Network > Switch and click Add button under VLAN ID section
2. For the new VLAN, make sure the CPU is tagged, then select untagged for the LAN port(s) you are want to use this new VLAN. Make sure that port is off for all other VLANs. Click Save & Apply
3. In the Network > Interfaces click Add new interface button (under the interface overview section)
4. Name the new interface (Guest), select the new VLAN (likely something like eth0.3); the rest of the defaults are okay. Click Submit.
5. Set your desired IPv4 address (for the router on this VLAN), net mask, and gateway, and any other stuff here you want. Click Save.
6. Click Setup DHCP Server button. Defaults here are fine, but you can change them if you want. Click Save.
7. Select the Firewall Settings tab for the interface. The radio button will default to the unspecified -or- create box. Name your firewall zone (guest). Click Save & Apply.
8. Network > Firewall > Zones section,

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avr-uart-calc

A Pen by ivan baktsheev on CodePen.

License.