jarun

prerequisites

• Compile the program in gcc with debug symbols enabled (-g)
• Do NOT strip the binary
• To generate assembly code using gcc use the -S option: gcc -S hello.c

utilities

objdump

jarun

1. Look up the interface

$ sudo iw dev                            
phy#0
	Unnamed/non-netdev interface
		wdev 0x3
		addr 98:54:1b:0a:9f:16
		type P2P-device
 txpower 0.00 dBm

jarun

In this example, we will setup a SSH server on Termux (for Android) and connect to the server from Ubuntu desktop. However, a similar procedure should work with any SSH server.

1. Generate your ssh key pair on your desktop

   $ ssh-keygen
   

2. Check your desktop IP address (say, 192.168.0.100)

3. Run ssh server on your desktop

4. Copy the file to Termux over SCP

$ scp arun@192.168.0.100:~/.ssh/id_rsa.pub ~/.ssh/authorized_keys

jarun

Instead of waiting for long commands to finish one can easily get notifications when they are complete. The following procdure shows how to set his in fish shell.

Requirements: fish shell, notify-send, xdotool

• Add a new file vi ~/.config/fish/functions/noti.fish with the content below:

function fish_right_prompt
    if test $CMD_DURATION
 # Check if terminal window is hidden

jarun

#!/usr/bin/env python3

import os
import stat

extns = ['.aac', '.avi', '.flac', '.m3u', '.m4a', '.mkv', '.mp3', '.mp4', '.smi', '.srt', '.sub', '.webm', '.wma']

for root, dirs, files in os.walk('.'):
    for entry in files:
        fname, ext = os.path.splitext(entry)

jarun

List the network devices.

$ ls /sys/class/net
eth0  lo  wlan0

Edit the config file.

jarun

A collection of awesome commands, functions, aliases to save your time

Play random music from your media storage:

# BASH shell

boom()                                                                           
{                                                                                
 find $@ -type f \( -iname "*.mp3" -o -iname "*.flac" -o -iname "*.webm" -o -iname "*.wma" \) | sort -R | head -n 100 | xargs -d "\n" smplayer > /dev/null 2>&1 &

jarun

vim

daw - delete a word (under cursor)
caw - delete a word (under cursor) and put in insert mode

Remove first 5 characters in each line:

:%s/^.{0,5}//

jarun

#!/usr/bin/env python3

'''
Description: split a music track into specified sub-tracks using ffmpeg
             target files are saved as variable bit-rate mp3 (lossless)

Usage: split <original_track> <track_list>
'''

import shlex

jarun

sudo apt install ruby ruby-dev
sudo gem install travis
# install path: /var/lib/gems/