| 1 | Usage: ls [OPTION]... [FILE]...
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| 2 | List information about the FILEs (the current directory by default).
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| 3 | Sort entries alphabetically if none of -cftuvSUX nor --sort is specified.
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| 4 | 
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| 5 | Mandatory arguments to long options are mandatory for short options too.
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| 6 |   -a, --all                  do not ignore entries starting with .
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| 7 |   -A, --almost-all           do not list implied . and ..
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| 8 |       --author               with -l, print the author of each file
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| 9 |   -b, --escape               print C-style escapes for nongraphic characters
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| 10 |       --block-size=SIZE      scale sizes by SIZE before printing them; e.g.,
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| 11 |                                '--block-size=M' prints sizes in units of
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| 12 |                                1,048,576 bytes; see SIZE format below
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| 13 |   -B, --ignore-backups       do not list implied entries ending with ~
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| 14 |   -c                         with -lt: sort by, and show, ctime (time of last
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| 15 |                                modification of file status information);
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| 16 |                                with -l: show ctime and sort by name;
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| 17 |                                otherwise: sort by ctime, newest first
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| 18 |   -C                         list entries by columns
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| 19 |       --color[=WHEN]         colorize the output; WHEN can be 'always' (default
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| 20 |                                if omitted), 'auto', or 'never'; more info below
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| 21 |   -d, --directory            list directories themselves, not their contents
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| 22 |   -D, --dired                generate output designed for Emacs' dired mode
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| 23 |   -f                         do not sort, enable -aU, disable -ls --color
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| 24 |   -F, --classify             append indicator (one of */=>@|) to entries
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| 25 |       --file-type            likewise, except do not append '*'
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| 26 |       --format=WORD          across -x, commas -m, horizontal -x, long -l,
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| 27 |                                single-column -1, verbose -l, vertical -C
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| 28 |       --full-time            like -l --time-style=full-iso
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| 29 |   -g                         like -l, but do not list owner
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| 30 |       --group-directories-first
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| 31 |                              group directories before files;
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| 32 |                                can be augmented with a --sort option, but any
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| 33 |                                use of --sort=none (-U) disables grouping
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| 34 |   -G, --no-group             in a long listing, don't print group names
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| 35 |   -h, --human-readable       with -l and/or -s, print human readable sizes
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| 36 |                                (e.g., 1K 234M 2G)
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| 37 |       --si                   likewise, but use powers of 1000 not 1024
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| 38 |   -H, --dereference-command-line
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| 39 |                              follow symbolic links listed on the command line
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| 40 |       --dereference-command-line-symlink-to-dir
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| 41 |                              follow each command line symbolic link
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| 42 |                                that points to a directory
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| 43 |       --hide=PATTERN         do not list implied entries matching shell PATTERN
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| 44 |                                (overridden by -a or -A)
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| 45 |       --indicator-style=WORD  append indicator with style WORD to entry names:
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| 46 |                                none (default), slash (-p),
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| 47 |                                file-type (--file-type), classify (-F)
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| 48 |   -i, --inode                print the index number of each file
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| 49 |   -I, --ignore=PATTERN       do not list implied entries matching shell PATTERN
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| 50 |   -k, --kibibytes            default to 1024-byte blocks for disk usage
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| 51 |   -l                         use a long listing format
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| 52 |   -L, --dereference          when showing file information for a symbolic
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| 53 |                                link, show information for the file the link
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| 54 |                                references rather than for the link itself
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| 55 |   -m                         fill width with a comma separated list of entries
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| 56 |   -n, --numeric-uid-gid      like -l, but list numeric user and group IDs
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| 57 |   -N, --literal              print raw entry names (don't treat e.g. control
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| 58 |                                characters specially)
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| 59 |   -o                         like -l, but do not list group information
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| 60 |   -p, --indicator-style=slash
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| 61 |                              append / indicator to directories
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| 62 |   -q, --hide-control-chars   print ? instead of nongraphic characters
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| 63 |       --show-control-chars   show nongraphic characters as-is (the default,
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| 64 |                                unless program is 'ls' and output is a terminal)
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| 65 |   -Q, --quote-name           enclose entry names in double quotes
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| 66 |       --quoting-style=WORD   use quoting style WORD for entry names:
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| 67 |                                literal, locale, shell, shell-always,
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| 68 |                                shell-escape, shell-escape-always, c, escape
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| 69 |   -r, --reverse              reverse order while sorting
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| 70 |   -R, --recursive            list subdirectories recursively
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| 71 |   -s, --size                 print the allocated size of each file, in blocks
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| 72 |   -S                         sort by file size, largest first
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| 73 |       --sort=WORD            sort by WORD instead of name: none (-U), size (-S),
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| 74 |                                time (-t), version (-v), extension (-X)
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| 75 |       --time=WORD            with -l, show time as WORD instead of default
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| 76 |                                modification time: atime or access or use (-u);
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| 77 |                                ctime or status (-c); also use specified time
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| 78 |                                as sort key if --sort=time (newest first)
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| 79 |       --time-style=STYLE     with -l, show times using style STYLE:
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| 80 |                                full-iso, long-iso, iso, locale, or +FORMAT;
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| 81 |                                FORMAT is interpreted like in 'date'; if FORMAT
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| 82 |                                is FORMAT1<newline>FORMAT2, then FORMAT1 applies
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| 83 |                                to non-recent files and FORMAT2 to recent files;
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| 84 |                                if STYLE is prefixed with 'posix-', STYLE
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| 85 |                                takes effect only outside the POSIX locale
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| 86 |   -t                         sort by modification time, newest first
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| 87 |   -T, --tabsize=COLS         assume tab stops at each COLS instead of 8
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| 88 |   -u                         with -lt: sort by, and show, access time;
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| 89 |                                with -l: show access time and sort by name;
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| 90 |                                otherwise: sort by access time, newest first
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| 91 |   -U                         do not sort; list entries in directory order
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| 92 |   -v                         natural sort of (version) numbers within text
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| 93 |   -w, --width=COLS           set output width to COLS.  0 means no limit
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| 94 |   -x                         list entries by lines instead of by columns
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| 95 |   -X                         sort alphabetically by entry extension
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| 96 |   -Z, --context              print any security context of each file
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| 97 |   -1                         list one file per line.  Avoid '\n' with -q or -b
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| 98 |       --help     display this help and exit
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| 99 |       --version  output version information and exit
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| 100 | 
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| 101 | The SIZE argument is an integer and optional unit (example: 10K is 10*1024).
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| 102 | Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (powers of 1000).
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| 103 | 
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| 104 | Using color to distinguish file types is disabled both by default and
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| 105 | with --color=never.  With --color=auto, ls emits color codes only when
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| 106 | standard output is connected to a terminal.  The LS_COLORS environment
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| 107 | variable can change the settings.  Use the dircolors command to set it.
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| 108 | 
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| 109 | Exit status:
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| 110 |  0  if OK,
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| 111 |  1  if minor problems (e.g., cannot access subdirectory),
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| 112 |  2  if serious trouble (e.g., cannot access command-line argument).
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| 113 | 
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| 114 | GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
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| 115 | Full documentation at: <http://www.gnu.org/software/coreutils/ls>
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| 116 | or available locally via: info '(coreutils) ls invocation'
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