The tr command in Linux is a command-line utility that translates or substitutes characters. It reads from the standard input and writes to the standard output. Although commonly used for translation applications, tr has versatile functionality in the text processing aspect of Linux. Ranging from replacing a list of characters, to deleting or squeezing character repetitions, tr presents a robust tool for stream-based text manipulations.
Here's a basic usage example:
echo 'hello' | tr 'a-z' 'A-Z'
In this example, tr is used to convert the lowercase 'hello' to uppercase 'HELLO'. It's an essential tool for text processing tasks in the Linux environment.
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