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Cryptographic hash functions can be used for verifying file integrity. To check that the file has not been altered during transfer over the network.

Let's say we have the following file named data.txt with the following content:

Hello world

The openssl dgst command can be used to perform various digest operations.To generate a hash of the file data.txt using SHA-256, run the following command:

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# EditorConfig is awesome: http://EditorConfig.org

# top-most EditorConfig file
root = true

# Unix-style newlines with a newline ending every file
[*]
end_of_line = lf
insert_final_newline = true
trim_trailing_whitespace = true

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-w "\nstatus=%{http_code} %{redirect_url} size=%{size_download} time=%{time_total} content-type=\"%{content_type}\"\
insecure
insecure

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  # https://clubmate.fi/alacritty
  # ~/.config/alacritty/alacritty.yml. -- linux
  # %APPDATA%\alacritty\alacritty.yml -- windows

window:
  # Blank space added around the window in pixels. This padding is scaled
  # by DPI and the specified value is always added at both opposing sides.
  padding:
    x: 10
    y: 10

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How to use treefmt in a nix build

{ src # src should point to the project to check the format for
, runCommandNoCC
, shfmt
, rustfmt
, treefmt
}:

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#
import string
import random

# Generate a list of 10  lower case random 4 letter strings

result_str = string.ascii_lowercase

random_strings = []

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#!/bin/sh
#
# pdfsplit [input.pdf] [first_page] [last_page] [output.pdf] 
#
# Example: pdfsplit big_file.pdf 10 20 pages_ten_to_twenty.pdf
#
# written by: Westley Weimer, Wed Mar 19 17:58:09 EDT 2008
#
# The trick: ghostscript (gs) will do PDF splitting for you, it's just not
# obvious and the required defines are not listed in the manual page. 

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#!/bin/sh
 
#
# Load variables from '.env' files
#
# Usage:
#
# To inject '.env' variables and run a command:
#     dotenv my_command param1 param2
#

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#!/bin/bash

# source:
# https://gist.github.com/fideloper/2649884
 
# THIS VERSION WILL ASK YOU FOR THE DATABASE NAME AND WHERE TO SAVE IT LOCALLY
 
function show_usage {
        echo "Usage: $0 database-name save-directory"
        exit 1

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#!/bin/bash

# source:
# https://github.com/LeCoupa/awesome-cheatsheets/blob/master/languages/bash.sh
 
##############################################################################
# SHORTCUTS
##############################################################################
 
CTRL+A  # move to beginning of line