Python's pickle is great and convenient to use, however python 2 and python 3 differing in unicode handling is making pickled files quite incompatible to load.

Read more…

If you do not have a usb here available, or usb not bootable for some reason (i.e. motherboard issue, usb issue, or whatever), you might need to boot your windows from local hard drive.

Make available for an empty partition and format it into NTFS

It just needs to hold the installation files, so make it 8G will suffice.

Read more…

Environment Setup

Read more…

What is GDB?

GDB is a user process that attaches on to another user process.

That's all.

Project Build Type

• Debug build: gcc -g
  • Works with gdb
  • Shows source code
  • Easy mode
• Release with debug information build:
  • Works with gdb
  • Shows source code, however messy because of optimizations
  • Hard mode
• Release build: gcc -O2
  • Works with gdb
  • No source code information available
  • Debug with disassembled application
  • Hell mode

Read more…

For Ubuntu 16.04 Users:

sudo apt-get -y install nvidia-361-updates-dev nvidia-prime nvidia-profiler \
  nvidia-settings nvidia-visual-profiler \
  nvidia-cuda-dev nvidia-cuda-toolkit nvidia-opencl-dev

And, that's it!

For Ubuntu 14.04 Users

Read more…

The method is for systemd users.

In order to show the error messages printed from your NetworkManager, you need to manually start it from your command line.

Here's the instructions:

systemctl mask NetworkManager.service
systemctl stop NetworkManager.service
NM_PPP_DEBUG=1 /usr/sbin/NetworkManager --no-daemon
systemctl unmask NetworkManager.service
systemctl restart NetworkManager.service

Sometimes wasting a partition for Linux Swap is quite annoying, so let's use a file instead.

Steps are simple:

cd /whatever-dir/
dd if=/dev/zero of=./swapfile bs=1024 count=<num in KB>
mkswap ./swapfile
swapon ./swapfile

# That's it, you just enabled your swapfile

If you'd hope that it'll start at boot, add it to your /etc/fstab:

echo "/whatever-dir/swapfile none swap sw 0 0" >> /etc/fstab

Requirement

How do I find out what package provides a file called /bin/ls?

Read more…

The man page of xmodmap is showing us a way of exchanging/swaping Caps_Lock and Control_L:

! file: ~/.xmodmap

!
! Swap Caps_Lock and Control_L
!
remove Lock = Caps_Lock
remove Control = Control_L
keysym Control_L = Caps_Lock
keysym Caps_Lock = Control_L
add Lock = Caps_Lock
add Control = Control_L

How to run the script:

1. Save the script in ~/.xmodmap.
2. Run xmodmap ~/.xmodmap
3. Check your Caps Lock and Left Control to see the effect.

However, the script will really swap it. Because if you rerun the script again, it'll swap it back.

Read more…