Transforming text

The commands that reshape text — reordering lines, removing duplicates, substituting characters, reflowing paragraphs, and counting.

Sort the lines of files — alphabetically, numerically, by field, and many other ways.

Collapse or report adjacent repeated lines in a file.

Translate, squeeze, or delete individual characters in a stream of text.

Convert tab characters in a file into spaces.

Convert runs of spaces in a file back into tab characters.

Reflow paragraphs of text to a target line width.

Hard-wrap long lines at a fixed width.

Paginate and columnate text for printing.

Produce a permuted index of the words in a file.

Topologically sort items so that each comes after the things it depends on.

Count the lines, words, and bytes in files.

Output the input lines in a random order.