4 Usage

Caffeine Fueled edited this page 2025-11-05 19:29:04 +00:00

Table of Contents

• Examples for alias in bash
• Transfer directories or binary files
• Encryption with GPG
• Example
• Encryption with age and SSH key pair

Examples for alias in bash

## Optional: generate key, replace `mysecretkey`

openssl rand -hex 32

## Upload to linedump

ldup() {
  local dir="${1:-.}"
  local key="${2:-mysecretkey}"
  tar cz "$dir" \
    | openssl enc -aes-256-cbc -pbkdf2 -salt -base64 -pass pass:"$key" \
    | curl -sS -X POST --data-binary @- https://linedump.com
}

## Download and extract from linedump in current directory

lddown() {
  local paste_id="$1"
  local key="${2:-mysecretkey}"
  curl -s "https://linedump.com/${paste_id}" \
    | base64 -d \
    | openssl enc -d -aes-256-cbc -pbkdf2 -pass pass:"$key" \
    | tar xz
}

## Examples
# key is optional, as it would have been the default

ldup ./data mysecretkey

# replace `abc123` with paste_id of the upload

lddown abc123 mysecretkey

---

Transfer directories or binary files

Unencrypted:

Upload:

tar cvz ./data | base64 | curl -X POST --data-binary @- https://linedump.com

Download:

curl -s https://linedump.com/{paste_id} | base64 -d | tar xz

Encrypted:

Upload:

tar cz ./data \
  | openssl enc -aes-256-cbc -pbkdf2 -salt -base64 -pass pass:yourkey \
  | curl -sS -X POST --data-binary @- https://linedump.com

Download:

curl -s https://linedump.com/{paste_id} \
  | base64 -d \
  | openssl enc -d -aes-256-cbc -pbkdf2 -pass pass:yourkey \
  | tar xz

---

Encryption with GPG

Replace curl with any other tool that can send HTTP POST requests. Example on Linux.

Upload

String:

echo "Cheers" | gpg --symmetric --armor | curl -X POST --data-binary @- https://linedump.com

File:

gpg --symmetric --armor file.txt -o - | curl -X POST --data-binary @- https://linedump.com

Command:

ip -br a | gpg --symmetric --armor | curl -X POST --data-binary @- https://linedump.com

Download

Save to file:

curl -s https://linedump.com/{paste_id} | gpg --decrypt -o output.txt

Example

1. Upload

echo "Cheers" | gpg --symmetric --armor | curl -X POST --data-binary @- https://linedump.com
https://linedump.com/xGuiMp
Delete with HTTP POST: https://linedump.com/xGuiMp?token=x2NTpUh_JH7rwCdZ3gFDDAsCmAACkpYhZAaW0PP8

2. Checking encrypted content the server sees

curl https://linedump.com/xGuiMp
-----BEGIN PGP MESSAGE-----

jA0ECQMKjt5qCUrYoIj/0jwBPzikbS57PpJ0QR+5nlKXppAfkyVci7mI5kR3+zmC
HOQYztfu4JXW1sEGaH3OPD0KlmBwpWIpbuSU2VE=
=uRk1
-----END PGP MESSAGE-----

3. Download and decryption

curl -s https://linedump.com/xGuiMp | gpg --decrypt
gpg: AES256.CFB encrypted data
gpg: encrypted with 1 passphrase
Cheers

---

Encryption with age and SSH key pair

Upload

String:

echo "Cheers" | age -R ~/.ssh/id_ssh.pub | base64 | curl -X POST --data-binary @- https://linedump.com

File:

age -R ~/.ssh/id_ssh.pub -o - file.txt | base64 | curl -X POST --data-binary @- https://linedump.com

Command:

ip -br a | age -R ~/.ssh/id_ssh.pub | base64 | curl -X POST --data-binary @- https://linedump.com

Download

Save to file:

curl -s https://linedump.com/{paste_id} | base64 -d | age -d -i ~/.ssh/id_ssh > output3.txt