Bash Utils

Miscellaneous small utils, mainly for the Bash shell.

jabbalaci
124
43
Python

Bash Utils (miscellaneous small utils for the Bash shell)

New (Jan 9, 2017)! All scripts were updated to Python 3. The original Python 2 version (which is not maintained anymore) is tagged as “v0.1”. You can find that
under the “release” link.

Here I collect some small command-line utils.

dictionary/meaning.py

  • Look up the meaning of a word.
  • Usage: meaning pen
  • Meaning: what does the word pen mean?

dropbox/dropbox_permissions.py

  • Set directory/file permissions in your Dropbox folder in an intelligent way.
  • Intended audience: Linux users who also use Windows sometimes.
  • Usage: put the script in the root of your Dropbox folder and launch it.
  • blog post

dropbox/get_public_link.py

  • Show the public Dropbox link(s) of one (or several) file(s).
  • Dropbox made some changes in 2017, so it doesn’t work anymore.
  • Usage: get_public_link [<file> | -a]
  • blog post

firefox/export_firefox_cookies.py

  • This script extracts cookies from Firefox’s cookies.sqlite that are specific to a given host. The exported cookies are saved in cookies.txt. New! It also exports session cookies from Firefox’s recovery.js file.
    The exported cookies are saved to session_cookies.txt.
  • The original script was written by Dirk Sohler.
  • Usage: export_firefox_cookies.py <host>
  • blog post

mouse/mousepos_gui.py

radio/radio.py

  • A minimalistic radio player.
  • Available stations: Slay Radio, goa, trance, chillout, etc.
  • Usage: radio.py

replace_accents/replace_latex_accents.pl

  • This script allows you to write special Hungarian and French characters in a simple way
    (using the ISO-8859-1 (Latin-1) charset), then convert them to their LaTeX-equivalents.
  • Example: La’szlo’ => L’{a}szl’{o}
  • blog post

replace_accents/replace_french_accents_to_latex.pl

  • This script converts a French accented text to LaTeX replacing the funny characters with their LaTeX equivalents.
  • Example: é => '{e}
  • blog post

alarm.py

  • A simple alarm script that plays a list of MP3s at a given time.
    Very useful if you leave your computer switched on during the night.
  • Usage:
$ alarm -p
    Play music first to adjust volume.
$ alarm -t 7h5
    Set alarm time (5 past 7 in this example).

cb.py

  • Print the content of the clipboard to the standard output.
  • Usage: cb.py

fftabs.py

  • A command line program for manipulating Firefox tabs.
  • Requirements: Firefox + MozRepl add-on.
  • Help: fftabs -h

from_base64.py

  • Ask a base64 string and convert it back to a normal string (decode).
  • Usage: from_base64

get_alap.py

  • An interactive program to generate a skeleton source code.
  • Supported languages: Python, Go, Java, C, D.
  • Usage: get_alap.py

get_images.py

  • Extract image links from a web page.
  • Usage: get_images URL [URL]... [-l]

get_links.py

  • Extract all links from a web page.
  • Usage: get_links.py <URL>
  • blog post

github_user_email.py

  • An interactive program that figures out the email address of a GitHub user.
  • Usage: github_user_email.py

here.py and here.sh

  • Print just the name of the current directory. For instance, if you are in /home/students/solo, then this script will print just solo.
  • here.sh simply prints the output, while here.py, in addition, copies the output to the clipboards.
  • Usage: here

img_to_base64.py

  • Take an image file and encode it with BASE64. Put the encoded data in an “img” HTML tag.
  • Usage: img_to_base64 <image_file>
  • blog post

inout.py

  • An interactive script for 1) compressing a folder to another directory, and
    2) uncompressing an archive file to a destination directory.
  • Rationale: I always forget the order of parameters…
  • Usage: inout

is_net_back.py

  • Play a sound when the Internet connection is back.
  • Usage: is_net_back

myip.py

  • My external IP address.
  • Usage: myip

ocr.py

  • A wrapper script around the Tesseract OCR engine. Convert an image to string.
  • Usage: ocr <image_file>

open_in_tabs.py

  • Read URLs from the standard input and open them in separated browser tabs.
  • Usage: cat url_list.txt | open_in_tabs
  • blog post

prettify.py

  • Prettify an HTML page, i.e. pretty print its HTML source.
  • The script prints the HTML source that is built by BeautifulSoup (BS). Idea: if you want to manipulate a page with BS, analyze the prettified source instead of the original because this is how BS stores it.
  • Usage: prettify <URL>
  • blog post

prettyjson.py

  • Prettify a JSON file.
  • Usage: prettyjson ugly.json

py2rtf.py

  • Transform a python source file to RTF.
  • Usage: py2rtf [-f] hello.py
  • Meaning: the output is written to hello.rtf
  • blog post

redirect_to.py

  • This script tells you where a webpage redirects.
  • Usage: redirect_to.py <URL>
  • blog post

rep.py

  • Repeat a bash command several times.
  • Usage: rep <rep> <cmd>
  • Example: rep 3 echo hello
  • Meaning: print the text “hello” three times.

slogan.py

  • Generate some slogans from a keyword.
  • Usage: slogan <keyword>

sp.py

  • Print the absolute path of a file. If no parameter is passed, show the current path. The name stands for “show path”.
  • This is one of my most useful scripts 😃 I use it every day.
  • Usage: sp [<filename>]
  • blog post

to_base64.py

  • Ask a string and convert it to a base64 string (encode).
  • Usage: to_base64

to_md5.py

  • This scripts reads a text interactively and prints its
    md5-encoded version. The output is a 32-character long
    hexa string.
  • Usage: to_md5

to_utf8.py

  • Convert a text file to an UTF-8-encoded text. The output is printed to the screen.
  • Usage: to_utf8 input.txt

tocb.py

  • Copy the text from the standard input to ALL clipboards. Thus, you can use any paste method to insert your text (middle mouse button or Shift+Insert). The name stands for “to clipboard(s)”.
  • Usage: cat file.txt | tocb
  • Options: with -t you can trim the text first (remove whitespaces from both ends of the text).
  • blog post

top10.py

  • Show the top 10 largest files in the current directory. Filesizes can be shown in a human-readable format with the -h option.
  • Usage: top10 [-h]

twitch2mp3.py

  • Grab a twitch video in mp3.
  • Usage: twitch2mp3 TWITCH_VIDEO_URL

userpass.py

  • Username and password generator.
  • Usage: userpass

us.py

  • Change spaces to underscores. Pass a string as a parameter OR pass it
    on the standard input.
  • Example #1: us "How to Think Like a Computer Scientist.pdf"
  • Result #1: How_to_Think_Like_a_Computer_Scientist.pdf
  • Example #2: echo "he he" | us
  • Result #2: he_he

xml2json.py

  • Convert an XML file to JSON.
  • This is a wrapper around the excellent xmltodict library.
  • Usage: xml2json <input.xml>