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docs: update

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Dylan Araps
2018-06-13 12:51:35 +10:00
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README.md
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@@ -25,6 +25,8 @@ scripts and not full blown utilities.
<!-- vim-markdown-toc GFM --> <!-- vim-markdown-toc GFM -->
* [File handling](#file-handling) * [File handling](#file-handling)
* [Read a file to a string.](#read-a-file-to-a-string)
* [Read a file to an array (*by line*).](#read-a-file-to-an-array-by-line)
* [Get the first N lines of a file.](#get-the-first-n-lines-of-a-file) * [Get the first N lines of a file.](#get-the-first-n-lines-of-a-file)
* [Get the last N lines of a file.](#get-the-last-n-lines-of-a-file) * [Get the last N lines of a file.](#get-the-last-n-lines-of-a-file)
* [Get the number of lines in a file.](#get-the-number-of-lines-in-a-file) * [Get the number of lines in a file.](#get-the-number-of-lines-in-a-file)
@@ -45,6 +47,22 @@ scripts and not full blown utilities.
## File handling ## File handling
### Read a file to a string.
Alternative to the `cat` command.
```sh
file_data="$(<"file")"
```
### Read a file to an array (*by line*).
Alternative to the `cat` command.
```sh
IFS=$'\n' read -d "" -ra file_data < "file"
```
### Get the first N lines of a file. ### Get the first N lines of a file.
Alternative to the `head` command. Alternative to the `head` command.