Nushell
Get Nu!
Getting Started
  • The Nushell Book
  • Command Reference
  • Cookbook
  • Language Reference Guide
  • Contributing Guide
Blog
  • English
  • 中文
  • Deutsch
  • Français
  • Español
  • 日本語
  • Português do Brasil
  • Русский язык
GitHub
Get Nu!
Getting Started
  • The Nushell Book
  • Command Reference
  • Cookbook
  • Language Reference Guide
  • Contributing Guide
Blog
  • English
  • 中文
  • Deutsch
  • Français
  • Español
  • 日本語
  • Português do Brasil
  • Русский язык
GitHub
  • Categories

    • Bits
    • Bytes
    • Chart
    • Conversions
    • Core
    • Database
    • Dataframe
    • Dataframe Or Lazyframe
    • Date
    • Debug
    • Default
    • Env
    • Experimental
    • Expression
    • Filesystem
    • Filters
    • Formats
    • Generators
    • Hash
    • History
    • Lazyframe
    • Math
    • Misc
    • Network
    • Path
    • Platform
    • Plugin
    • Prompt
    • Random
    • Removed
    • Shells
    • Strings
    • System
    • Viewers

first for filters

Return only the first several rows of the input. Counterpart of `last`. Opposite of `skip`.

Signature

> first {flags} (rows)

Parameters

  • rows: Starting from the front, the number of rows to return.

Input/output types:

inputoutput
list<any>any
binarybinary
rangeany

Examples

Return the first item of a list/table

> [1 2 3] | first
1

Return the first 2 items of a list/table

> [1 2 3] | first 2
╭───┬───╮
│ 0 │ 1 │
│ 1 │ 2 │
╰───┴───╯

Return the first 2 bytes of a binary value

> 0x[01 23 45] | first 2
Length: 2 (0x2) bytes | printable whitespace ascii_other non_ascii
00000000:   01 23                                                •#

Return the first item of a range

> 1..3 | first
1