Awesome
nu_plugin_file
This nushell plugin will open files to inspect them and report back a little information. It uses magic bytes to determine many file formats. The core code was "borrowed" from a spacedrive crate that I thought looked interesting.
Usage:
❯ help file
View file format information
Usage:
> file <filename>
Flags:
-h, --help - Display the help message for this command
Parameters:
filename <string>: full path to file name to inspect
Examples:
Get format information from file
> file some.jpg
╭──────────────┬──────────╮
│ description │ Image │
│ format │ jpg │
│ magic_offset │ 0 │
│ magic_length │ 2 │
│ magic_bytes │ [FF, D8] │
╰──────────────┴──────────╯
Example with MacOS executable
❯ file ~/.cargo/bin/nu | table -e
╭─────────────┬──────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ description │ mach-o binary, arm64 │
│ format │ Executable │
│ │ ╭─#─┬─offset─┬─length─┬────────bytes─────────╮ │
│ magics │ │ 0 │ 0 │ 4 │ [207, 250, 237, 254] │ │
│ │ ╰───┴────────┴────────┴──────────────────────╯ │
│ │ ╭──────────────┬───────────────────────────────────────────────────────────────────────────────────────╮ │
│ details │ │ arch │ arm64 │ │
│ │ │ format │ mach-o │ │
│ │ │ │ ╭───┬───────────────────────────────────────────────────────────────────────────────╮ │ │
│ │ │ dependencies │ │ 0 │ /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation │ │ │
│ │ │ │ │ 1 │ /usr/lib/libobjc.A.dylib │ │ │
│ │ │ │ │ 2 │ /System/Library/Frameworks/Security.framework/Versions/A/Security │ │ │
│ │ │ │ │ 3 │ /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation │ │ │
│ │ │ │ │ 4 │ /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices │ │ │
│ │ │ │ │ 5 │ /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit │ │ │
│ │ │ │ │ 6 │ /usr/lib/libiconv.2.dylib │ │ │
│ │ │ │ │ 7 │ /usr/lib/libSystem.B.dylib │ │ │
│ │ │ │ ╰───┴───────────────────────────────────────────────────────────────────────────────╯ │ │
│ │ ╰──────────────┴───────────────────────────────────────────────────────────────────────────────────────╯ │
╰─────────────┴──────────────────────────────────────────────────────────────────────────────────────────────────────────╯
Installation
- clone repo
git clone https://github.com/fdncred/nu_plugin_file.git - install with cargo
cargo install --path . - register plugin with nushell
plugin add /path/to/nu_plugin_file - bring plugin into scope
plugin use /path/to/nu_plugin_file - inspect a file
file some.jpg