Editing Redirection (computing) (section)

===Variants===
To append output to the end of the file, rather than clobbering it, the <code>&gt;&gt;</code> operator is used: <syntaxhighlight lang="bash" inline>command1 >> file1</syntaxhighlight>.

To read from a stream literal (an inline file, passed to the standard input), one can use a [[here document]], using the <code>&lt;&lt;</code> operator:
<syntaxhighlight lang="console">
$ tr a-z A-Z << END_TEXT
> one two three
> uno dos tres
> END_TEXT
ONE TWO THREE
UNO DOS TRES
</syntaxhighlight>

To read from a string, one can use a [[here string]], using the <code>&lt;&lt;&lt;</code> operator: <syntaxhighlight lang="bash" inline>tr a-z A-Z <<< "one two three"</syntaxhighlight>, or:

<syntaxhighlight lang="console">
$ NUMBERS="one two three"
$ tr a-z A-Z <<< "$NUMBERS"
ONE TWO THREE
</syntaxhighlight>