SORT(1) General Commands Manual SORT(1) NAME sort - Display sorted concatenation of all FILE(s). With no FILE, or when FILE is -, read standard input. SYNOPSIS sort [OPTION]... [FILE]... DESCRIPTION Display sorted concatenation of all FILE(s). With no FILE, or when FILE is -, read standard input. OPTIONS --help Print help information. --version Print version information. --sort Possible values: o general-numeric o human-numeric o month o numeric o version o random -h, --human-numeric-sort compare according to human readable sizes, eg 1M > 100k -M, --month-sort compare according to month name abbreviation -n, --numeric-sort compare according to string numerical value -g, --general-numeric-sort compare according to string general numerical value -V, --version-sort Sort by SemVer version number, eg 1.12.2 > 1.1.2 -R, --random-sort shuffle in random order --random-source use FILE as a source of random data -d, --dictionary-order consider only blanks and alphanumeric characters -m, --merge merge already sorted files; do not sort -c, --check check for sorted input; do not sort Possible values: o silent o quiet o diagnose-first -C, --check-silent exit successfully if the given file is already sorted, and exit with status 1 otherwise. -f, --ignore-case fold lower case to upper case characters -i, --ignore-nonprinting ignore nonprinting characters -b, --ignore-leading-blanks ignore leading blanks when finding sort keys in each line -o, --output write output to FILENAME instead of stdout -r, --reverse reverse the output -s, --stable stabilize sort by disabling last-resort comparison -u, --unique output only the first of an equal run -k, --key sort by a key -t, --field-separator custom separator for -k -z, --zero-terminated line delimiter is NUL, not newline --parallel change the number of threads running concurrently to NUM_THREADS -S, --buffer-size sets the maximum SIZE of each segment in number of sorted items -T, --temporary-directory use DIR for temporaries, not $TMPDIR or /tmp --compress-program compress temporary files with PROG, decompress with PROG -d; PROG has to take input from stdin and output to stdout --batch-size Merge at most N_MERGE inputs at once. --files0-from read input from the files specified by NUL-terminated NUL_FILE --debug underline the parts of the line that are actually used for sorting [files] EXTRA The key format is FIELD[.CHAR][OPTIONS][,FIELD[.CHAR]][OPTIONS]. Fields by default are separated by the first whitespace after a non-whitespace character. Use -t to specify a custom separator. In the default case, whitespace is appended at the beginning of each field. Custom separators however are not included in fields. FIELD and CHAR both start at 1 (i.e. they are 1-indexed). If there is no end specified after a comma, the end will be the end of the line. If CHAR is set 0, it means the end of the field. CHAR defaults to 1 for the start position and to 0 for the end position. Valid options are: MbdfhnRrV. They override the global options for this key. VERSION v(uutils coreutils) 0.11.0 2026-09-01 SORT(1)