tr
tr is a Linux command in the Text Processing category, rated beginner difficulty. Translates or deletes characters from stdin to stdout. The syntax is tr [options] set1 [set2]. Key options and parameters: set1, set2 — character sets for translation. It returns translated output. A close relative is grep, which searches for patterns in files using regular expressions. A close relative is sed, which stream editor for filtering and transforming text. A close relative is awk, which powerful text processing language. Ideal for column-based data and reports. More about this category: Linux text processing commands — grep, sed, awk, sort, cut, tr, and more. Search, filter, transform, and format text content. Related Text Processing commands: grep, sed, awk, sort, uniq, wc, cut, tee. This page is part of the free Linux Reference documentation covering 304+ commands, each with syntax, options, practical examples, and a difficulty rating.