tricky

• dotfiles

• highlight output

  • ack

  • less

  • grep

  • highlight

  • ccat

  • render visualization of hexadecimal colors

  • others

• remove highlight

• alias

  • bash -<parameter>

• get cookie from firefox

• authentication

  • special characters in usernames and passwords

• downlaods bookmark

• markdown icons

  • programming

  • tools

  • file format

  • platform

  • github readme status

• extract fonts from pdf

dotfiles

[!TIP|label:references:]

• dotfiles
• webpro/awesome-dotfiles
• dotfiles.github.io

highlight output

[!TIP] references:

• Colorized grep -- viewing the entire file with highlighted matches
• Highlight text similar to grep, but don't filter out text [duplicate]
• kilobyte/colorized-logs

ack

$ curl -sg https://api.domain.com | ack --passthru 'keyword'

less

$ curl -sg https://api.domain.com | less -i -p 'keyword'

grep

$ command | grep --color=always 'pattern\|$'
$ command | grep --color=always -E 'pattern|$'
$ command | egrep --color=always 'pattern|$'

• example

  $ curl -sg 'https://api.domain.com | jq -r . | grep --color=always '.*keyword.*\|$'
  
  # or
  $ curl -sg 'https://api.domain.com | jq -r . | grep --color=always -E '| .*keyword.*'

highlight

[!TIP] Highlight was designed to offer a flexible but easy to use syntax highlighter for several output formats. Instead of hardcoding syntax or colouring information, all relevant data is stored in configuration scripts. These scripts may be altered or enhanced with plug-in scripts.

$ highlight -i git.groovy -o git.groovy.html --syntax groovy --inline-css --include-style --line-numbers

ccat

[!TIP] ccat is the colorizing cat. It works similar to cat but displays content with syntax highlighting.

$ ccat /path/to/file.groovy

# output html format
$ ccat file.py --bg=dark --html

# get colors
$ ccat --palette

render visualization of hexadecimal colors

[!NOTE|label:references:]

• #2705 Render visualization of hexadecimal colors (or other common formats) using true color ANSI escape sequences

# colorcat
# - cats a file, but if any line contains N hex colors, it appends the colors
#   (rendered as ansi escape sequences) to the end of the line.
# - input can be stdin, a file, or a hex color in plain text
function colorcat() {
  if [[ "$#" -eq 1 && ! -f "$1" ]]; then
    echo "$1"
  else
    cat "$@"
  fi | while read -r line; do
    local colors=""
    for word in $line; do
      if [[ "$word" =~ ^[^A-Fa-f0-9]*#?([A-Fa-f0-9]{6})[^A-Fa-f0-9]*$ ]]; then
        hex=${BASH_REMATCH[1]}
        local r=$((16#${hex:0:2}))
        local g=$((16#${hex:2:2}))
        local b=$((16#${hex:4:2}))
        local truecolor="\033[48;2;${r};${g};${b}m"
        local reset="\033[0m"
        colors="${colors}${truecolor}  ${reset} "
      fi
    done
      echo -e "$line $colors"
  done
}

others

• dev-shell-essentials

remove highlight

[!TIP] references:

• Removing colors from output
• Remove ANSI color codes from a text file using bash

$ <cmd> | sed -r "s/\x1B\[([0-9]{1,3}(;[0-9]{1,2};?)?)?[mGK]//g"

# or
$ alias decolorize='sed -r "s/\x1B\[(([0-9]+)(;[0-9]+)*)?[mGKHfJ]//g"'
# deprecated
# $ alias decolorize='sed -r "s/\\x1B\\[([0-9]{1,3}(;[0-9]{1,2})?)?[mGK]//g"'
$ command | decolorize

• tips

  $ git br -a | cat -A
  * ^[[1;32mmarslo^[[m$
    ^[[31mremotes/origin/marslo^[[m$
    ^[[31mremotes/origin/gh-pages^[[m$
    ^[[31mremotes/origin/gitbook^[[m$
    ^[[31mremotes/origin/master^[[m$
    ^[[33mgh-pages^[[m$
    ^[[33mmaster^[[m$
    ^[[31mremotes/origin/sample^[[m$
  
  $ git br -a | decolorize | cat -A
  * marslo$
    remotes/origin/marslo$
    remotes/origin/gh-pages$
    remotes/origin/gitbook$
    remotes/origin/master$
    gh-pages$
    master$
    remotes/origin/sample$

alias

[!NOTE|label:references:]

• _complete_alias | cykerway/complete-alias
• How do I get bash completion for command aliases?
• make-completion-wrapper
• make-completion-wrapper
• bash-completion/README

$ echo ${BASH_ALIASES[ls]}
ls --color=always

bash -<parameter>

• get bash login log ( for rc script debug )

  $ bash -l -v

• run with only one startup file ( for sharing accounts )

  $ bash -i --rcfile="$HOME/.marslo/.imarslo"

get cookie from firefox

$ grep -oP '"url":"\K[^"]+' $(ls -t ~/.mozilla/firefox/*/sessionstore.js | sed q)

authentication

special characters in usernames and passwords

references:

• percent-encoding
• * iMarslo - get unicode

  $ echo -n '] [ ? /' |
    fmt -1 |
    xargs -i bash -c 'echo "{} -- $(echo -n {} | jq -sRr @uri)"'
  ] -- %5D
  [ -- %5B
  ? -- %3F
  / -- %2F

CHARACTERS	PERCENT-ENCODED
]	%5D
[	%5B
?	%3F
/	%2F
<	%3C
~	%7E
#	%23
```	%6D
!	%21
@	%40
$	%24
%	%25
^	%5E
&	%26
*	%2A
(	%28
)	%29
+	%2B
=	%3D
}	%7D
`	%7C
:	%3A
"	%22
;	%3B
'	%27
,	%2C
>	%3E
{	%7B
space	%20

downlaods bookmark

[!TIP|label:references:]

• terrorgum.com

  • Bash Cookbook
  • Becoming the Hacker
  • Deep Learning Revolution
  • linux basics for hackers.pdf
  • Linux In Nutshell.pdf
• pdfprof.com

  • Advanced Bash-Scripting Guide
  • Linux Bash Shell Cheat Sheet
• dye784/collection

markdown icons

[!NOTE|label:references:]

• * Simple Icons
• * Primer Design System | github - custom-icon-badges
• Ileriayo/markdown-badges
• VishwaGauravIn/pretty-readme-badges
• inttter/md-badges
• Simple Icons slugs

programming

NAME	ICON	MARKDOWN
python		
groovy		

tools

NAME	ICON	MARKDOWN
vim		
neovim		
git		
git		
iterm2		
helm		

file format

NAME	ICON	MARKDOWN
yaml		
json		

platform

NAME	ICON	MARKDOWN
macos		
linux		
ubuntu		

github readme status

[!NOTE|label:references:]

• github-readme-stats
• github-readme-streak-stats

TOOL	MARKDOWN	IMAGE
streak-stats	

extract fonts from pdf

$ python3 -m pip install pdfminer
$ python3 -m pip install pdfminer.six
$ python3 pdf_font_report.py input.pdf --format csv --output result.csv

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import argparse
import csv
from pdfminer.high_level import extract_pages
from pdfminer.layout import LTTextContainer, LTChar, LTTextLine, LTTextBox

def analyze_pdf_fonts(pdf_path, output_format=None, output_file=None):
    rows = []

    for page_number, page_layout in enumerate(extract_pages(pdf_path), start=1):
        for element in page_layout:
            if isinstance(element, LTTextContainer):
                for text_line in element:
                    if hasattr(text_line, "__iter__"):
                        for character in text_line:
                            if isinstance(character, LTChar):
                                char = character.get_text()
                                font = character.fontname
                                size = round(character.size, 2)
                                rows.append((page_number, char, font, size))
                    elif isinstance(text_line, LTChar):
                        # handle case where element is directly a character
                        char = text_line.get_text()
                        font = text_line.fontname
                        size = round(text_line.size, 2)
                        rows.append((page_number, char, font, size))

    if output_format == "markdown":
        print("| Page | Char | Font | Size |")
        print("|------|------|------|------|")
        for row in rows:
            print(f"| {row[0]} | `{row[1]}` | `{row[2]}` | {row[3]} |")

    elif output_format == "csv":
        if not output_file:
            output_file = "font_report.csv"
        with open(output_file, "w", newline="", encoding="utf-8") as csvfile:
            writer = csv.writer(csvfile)
            writer.writerow(["Page", "Char", "Font", "Size"])
            writer.writerows(rows)
        print(f"[✓] CSV report saved to: {output_file}")

    else:
        # Default: plain text output
        for row in rows:
            print(f"Page {row[0]}: '{row[1]}' → {row[2]} ({row[3]}pt)")

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Extract character-font-size info from PDF")
    parser.add_argument("pdf", help="Path to input PDF file")
    parser.add_argument("-f", "--format", choices=["markdown", "csv"], help="Output format")
    parser.add_argument("-o", "--output", help="Output file (for CSV)")
    args = parser.parse_args()

    analyze_pdf_fonts(args.pdf, args.format, args.output)