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Add documentation for nth command

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Maya Farber Brodsky 2019-10-04 17:37:11 +03:00
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# nth
This command returns the nth row of a table, starting from 0.
If the number given is less than 0 or more than the number of rows, nothing is returned.
## Usage
```shell
> [input-command] | nth [row-number]
```
## Examples
```shell
> ls
━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━
# │ name │ type │ readonly │ size │ accessed │ modified
───┼────────────┼───────────┼──────────┼────────┼───────────────┼───────────────
0 │ Cargo.toml │ File │ │ 239 B │ 2 minutes ago │ 2 minutes ago
1 │ .git │ Directory │ │ 4.1 KB │ 2 minutes ago │ 2 minutes ago
2 │ .gitignore │ File │ │ 19 B │ 2 minutes ago │ 2 minutes ago
3 │ src │ Directory │ │ 4.1 KB │ 2 minutes ago │ 2 minutes ago
━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━
> ls | nth 0
━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━
name │ type │ readonly │ size │ accessed │ modified
────────────┼──────┼──────────┼────────┼───────────────┼───────────────
Cargo.toml │ File │ │ 239 B │ 2 minutes ago │ 2 minutes ago
━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━
> ls | nth 5
```