e7d

#!/bin/bash

# read input
domain=$1
if [ -z $domain ]; then
    read -p "domain: " domain
fi
rsa=$2
if [ -z $rsa ]; then
    rsa=2048 # 2048 bits by default

e7d

### Keybase proof

I hereby claim:

  * I am e7d on github.
  * I am e7d (https://keybase.io/e7d) on keybase.
  * I have a public key whose fingerprint is 6324 5E8E 75A6 2FA4 17C2  81D3 F320 BE00 7C0B 8881

To claim this, I am signing this object:

e7d

If you want to use the latest available version of Squid, you can Build a Squid anonymous proxy from source code

Setup a Squid anonymous proxy

Table of contents

• Disclaimer
• Squid installation script
• Manage users

e7d

Object.defineProperty(Number.prototype, 'fileSize', {
    value: function humanFileSize(si = false) {
        const divider = si ? 1e3 : 1024;
        const i = Math.floor(Math.log(this) / Math.log(divider));
        const fileSize =
            (this / Math.pow(divider, i)).toFixed(2) +
            ' ' + ['', 'k', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y'][i] +
            (si ? 'i' : '');
        return fileSize.toString();
    },

e7d

Introduction

What we want is to allow John to connect through sftp only (no bash, no terminal) and to be limited to a set of folders.

In this example, we'll consider an existing user john, whose home directory is /home/john. You'll have to adapt the different commands to your specific case.

User preparation

We need our user to customized a bit. First of all the, its home directory must be owned by root: chown -c root:root /home/john

e7d

#!/bin/bash

export AnException=100
export AnotherException=101

# start with a try
try
(   # open a subshell !!!
    echo "do something"
    [ someErrorCondition ] && throw $AnException

e7d

#!/bin/sh

run() {
    echo -en "# "
    ($@ 2>&1; echo $?>~/_$$) | log
    V=$(($(cat ~/_L$$;rm -f ~/_L$$) / $(tput cols)))
    if test 0 -eq $(cat ~/_$$;rm -f ~/_$$); then
        echo -e "\r\033["$V"A\033[1;32m✓\033[0m\r\033["$V"B"
    else
        echo -e "\r\033["$V"A\033[1;31m✕\033[0m\r\033["$V"B"

e7d

(function() {
    String.prototype.asciiEncode = function() {
        var i, result = [];
        for (i = 0; i < this.length; i++) {
            result.push("%", this.charCodeAt(i).toString(16));
        }

        return result.join('');
    }
    

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Automated install

Disclaimer

Read the install script before using it.
You may want to understand what the script is doing before executing it.
I will not be responsible for any damage caused to your server.

Installation script

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#!/bin/sh

sudo apt-get remove $(dpkg -l|egrep '^ii  linux-(im|he)'|awk '{print $2}'|grep -v `uname -r`)
update-grub