printenv2

A printenv rewrite in Rust.

Advantages over classic implementations

• Rich-format output
  • Colored mode
  • Sort mode: output can be sorted by environment variable names
  • Escape mode:
  • Single-line: escape line break characters
  • Unprintable characters
• Remote mode. See notes
• Cross-platform

Installation

• via package managers:
  • Arch Linux: paru -S printenv2
• via Cargo: Run cargo install printenv2 if you already have Rust development environment setup.

Notes on Remote Mode

printenv2 comes with the ability to read environment variables of another running process.

Basic usage: ```sh

Make sure you have privilege to inspect the target process.

printenv2 --pid 1000 ```

Platform-specifics:

| Platform | Environment variables at startup | Environment variables in present | |-------------|----------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | Linux | printenv2 --pid <PID> | Unsafe[^1].
printenv2 --debugger-helper generates a shell script for that using gdb.
sh <(printenv2 --debugger-helper=gdb) <PID> \| printenv2 --load -.
sudo is likely required. | | Windows | Unsupported. | Unsafe[^1].
printenv2 --pid <PID> | | Unix (*BSD) | printenv2 --pid <PID> | Unsafe[^1].
printenv2 --debugger-helper generates a shell script for that using gdb.
sh <(printenv2 --debugger-helper=gdb) <PID> \| printenv2 --load -.
sudo is likely required. | | macOS | Unsupported. | Unsupported. | | Other | Unsupported. | Unsupported. |

TODO

• [ ] Remote mode on more OSes
• [ ] Json output

License

MIT