Nushell

bytes index-of for bytes

Returns start index of first occurrence of pattern in bytes, or -1 if no match.

Signature

> bytes index-of (pattern) ...rest --all --end

Parameters

  • pattern: the pattern to find index of
  • ...rest: for a data structure input, find the indexes at the given cell paths
  • --all (-a): returns all matched index
  • --end (-e): search from the end of the binary

Examples

Returns index of pattern in bytes

>  0x[33 44 55 10 01 13 44 55] | bytes index-of 0x[44 55]
1

Returns index of pattern, search from end

>  0x[33 44 55 10 01 13 44 55] | bytes index-of -e 0x[44 55]
6

Returns all matched index

>  0x[33 44 55 10 01 33 44 33 44] | bytes index-of -a 0x[33 44]
╭───┬───╮
│ 0 │ 0 │
│ 1 │ 5 │
│ 2 │ 7 │
╰───┴───╯

Returns all matched index, searching from end

>  0x[33 44 55 10 01 33 44 33 44] | bytes index-of -a -e 0x[33 44]
╭───┬───╮
│ 0 │ 7 │
│ 1 │ 5 │
│ 2 │ 0 │
╰───┴───╯

Returns index of pattern for specific column

>  [[ColA ColB ColC]; [0x[11 12 13] 0x[14 15 16] 0x[17 18 19]]] | bytes index-of 0x[11] ColA ColC
╭───┬──────┬──────────────┬──────╮
│ # │ ColA │     ColB     │ ColC │
├───┼──────┼──────────────┼──────┤
│ 0 │    0 │ [20, 21, 22] │   -1 │
╰───┴──────┴──────────────┴──────╯