Descriptions Last checked against version &textutils-contversion;. Program file descriptions cat cat concatenates file(s) or standard input to standard output. cksum cksum prints CRC checksum and byte counts of each specified file. comm comm compares two sorted files line by line. csplit csplit outputs pieces of a file separated by (a) pattern(s) to files xx01, xx02, ..., and outputs byte counts of each piece to standard output. cut cut prints selected parts of lines from specified files to standard output. expand expand converts tabs in files to spaces, writing to standard output. fmt fmt reformats each paragraph in the specified file(s), writing to standard output. fold fold wraps input lines in each specified file (standard input by default), writing to standard output. head head prints the first xx (10 by default) lines of each specified file to standard output. join join joins lines of two files on a common field. md5sum md5sum prints or checks MD5 checksums. nl nl writes each specified file to standard output, with line numbers added. od od writes an unambiguous representation, octal bytes by default, of a specified file to standard output. paste paste writes lines consisting of the sequentially corresponding lines from each specified file, separated by TABs, to standard output. pr pr paginates or columnates files for printing. ptx ptx produces a permuted index of file contents. sort sort writes sorted concatenation of files to standard output. split split outputs fixed-size pieces of an input file to PREFIXaa, PREFIXab, ... sum sum prints checksum and block counts for each specified file. tac tac writes each specified file to standard output, last line first. tail tail print the last xx (10 by default) lines of each specified file to standard output. tr tr translates, squeezes, and/or deletes characters from standard input, writing to standard output. tsort tsort writes totally ordered lists consistent with the partial ordering in specified files. unexpand unexpand converts spaces in each file to tabs, writing to standard output. uniq uniq removes duplicate lines from a sorted file. wc wc prints line, word and byte counts for each specified file and a total line, if more than one file is specified.