---
title: bits shl
categories: |
bits
version: 0.88.0
bits: |
Bitwise shift left for ints.
usage: |
Bitwise shift left for ints.
---
# {{ $frontmatter.title }}
for bits
{{ $frontmatter.bits }}
## Signature
```> bits shl {flags} (bits)```
## Flags
- `--signed, -s`: always treat input number as a signed number
- `--number-bytes, -n {string}`: the word size in number of bytes, it can be 1, 2, 4, 8, auto, default value `8`
## Parameters
- `bits`: number of bits to shift left
## Input/output types:
| input | output |
| --------- | --------- |
| int | int |
| list\ | list\ |
## Examples
Shift left a number by 7 bits
```nu
> 2 | bits shl 7
256
```
Shift left a number with 1 byte by 7 bits
```nu
> 2 | bits shl 7 --number-bytes '1'
0
```
Shift left a signed number by 1 bit
```nu
> 0x7F | bits shl 1 --signed
254
```
Shift left a list of numbers
```nu
> [5 3 2] | bits shl 2
╭───┬────╮
│ 0 │ 20 │
│ 1 │ 12 │
│ 2 │ 8 │
╰───┴────╯
```
**Tips:** Command `bits shl` was not included in the official binaries by default, you have to build it with `--features=extra` flag