Terminal based bitwise calculator in curses
Bitwise is multi base interactive calculator supporting dynamic base conversion and bit manipulation. It's a handy tool for low level hackers, kernel developers and device drivers developers.
Some of the features include:
- Interactive ncurses interface
- Command line calculator supporting all bitwise operations.
- Individual bit manipulator.
- Bitwise operations such as NOT, OR, AND, XOR, and shifts.
bitwise can be used both interactively and in command line mode.
Command line calculator mode
In command line mode, bitwise will calculate the given expression and will output the result in all bases including binary representation.
bitwise detects the base by the prefix of the input (0x/0X for hexadecimal, leading 0 for octal, b for binary, and the rest is decimal).
NEW Bitwise now support parsing IPv4 addresses, it will also output the possible IPv4 address in both Network and reversed byte order.
Simple base conversion
C style syntax Calculator
bitwise starts in interactive mode if no command line parameters are passed or if the -i | --interactive flag is passed. In this mode, you can input a number and manipulate it and see the other bases change dynamically. It also allows changing individual bits in the binary. You can show the help screen by pressing F1 .
Navigation in interactive mode
To move around use the arrow keys, or use vi key bindings : h j k l . Leave the program by pressing q .
Binary specific movement
You can toggle a bit using the space key. You can jump a byte forward using w and backwards one byte using b .
Bitwise operation in interactive mode
Setting the bit width:
Reducing or extending the bit width interactively is also very easy, just use: ! for 8bit, @ for 16Bit, $ for 32Bit and * for 64Bit. When changing the bit width, the number is masked with the new width, so you might lose precision, use with care.
Press ~ to perform the NOT operator.
Press < and > to perform the left or right shift.
expression calculator in interactive mode
You can enter expression calculator mode by typing : (Just like in vim).
To exit the mode, just press ESC .
In this mode, you can type any expression you like to be evaluated. The result will be printed in the history window and also printed in the binary and various bases on top.
operators and functions
- All C operators are supported, additionally, you can use the "$" symbol to refer to the last result.
- Refer to a specific bit by using the function BIT(x).
- help - Show the help screen.
- clear - Clear the history window.
- width [8 | 16 | 32 | 64] - Set the required width mask
- output [decimal | hex | octal | binary | all] - Set the default output for results.
- q - Exit
Integration with other software
From 20.04 you can just type
sudo apt-get install bitwise
For earlier versions:
sudo add-apt-repository ppa:ramon-fried/bitwise sudo apt-get update sudo apt-get install bitwise
If your distribution supports Snap just type:
sudo snap install bitwise
zypper install bitwise
You can use the AUR repository: https://aur.archlinux.org/packages/bitwise/
bitwise is in the default repository, so just type:
sudo xbps-install -S bitwise
Buildroot / Yocto
Bitwise is available both in Buildroot and in Yocto, please refer to the documentation on how to add those to your target image.
sudo port install bitwise
brew install bitwise
NCurses doesn't support Windows. You can use the Windows Subsystem for Linux as a workaround.
nix-env -i bitwise
Building from source
- libncurses (with forms)
- libcunit (only needed for testing)
On Ubuntu/Debian system you can just paste:
sudo apt-get install build-essential sudo apt-get install libncurses5-dev sudo apt-get install libreadline-dev sudo apt-get install libcunit1-dev
On Mac systems:
brew install automake brew install autoconf brew install readline export LDFLAGS="-L/usr/local/opt/readline/lib" export CPPFLAGS="-I/usr/local/opt/readline/include"
- Download the latest release
tar xfz RELEASE-FILE.TAR.GZ cd RELEASE-DIR ./configure make sudo make install
Running unit tests by typing
- Install prerequisites
- Fork the repo
- Follow the building from source section.
- commit and send pull request