# Bash 的 dir 命令

dir [OPTION]... [FILE]...

DIR(1)                           User Commands                          DIR(1)

NAME
       dir - list directory contents

SYNOPSIS
       dir [OPTION]... [FILE]...

DESCRIPTION
       List  information  about  the FILEs (the current directory by default).
       Sort entries alphabetically if none of -cftuvSUX nor --sort  is  speci‐
       fied.

       Mandatory  arguments  to  long  options are mandatory for short options
       too.

       -a, --all
              do not ignore entries starting with .

       -A, --almost-all
              do not list implied . and ..

       --author
              with -l, print the author of each file

       -b, --escape
              print C-style escapes for nongraphic characters

       --block-size=SIZE
              with  -l,  scale  sizes  by  SIZE  when  printing  them;   e.g.,
              '--block-size=M'; see SIZE format below

       -B, --ignore-backups
              do not list implied entries ending with ~

       -c     with  -lt: sort by, and show, ctime (time of last change of file
              status information); with -l: show ctime and sort by name;  oth‐
              erwise: sort by ctime, newest first

       -C     list entries by columns

       --color[=WHEN]
              color the output WHEN; more info below

       -d, --directory
              list directories themselves, not their contents

       -D, --dired
              generate output designed for Emacs' dired mode

       -f     list all entries in directory order

       -F, --classify[=WHEN]
              append indicator (one of */=>@|) to entries WHEN

       --file-type
              likewise, except do not append '*'

       --format=WORD
              across  -x, commas -m, horizontal -x, long -l, single-column -1,
              verbose -l, vertical -C

       --full-time
              like -l --time-style=full-iso

       -g     like -l, but do not list owner

       --group-directories-first
              group directories before files; can be augmented with  a  --sort
              option, but any use of --sort=none (-U) disables grouping

       -G, --no-group
              in a long listing, don't print group names

       -h, --human-readable
              with -l and -s, print sizes like 1K 234M 2G etc.

       --si   likewise, but use powers of 1000 not 1024

       -H, --dereference-command-line
              follow symbolic links listed on the command line

       --dereference-command-line-symlink-to-dir
              follow  each  command line symbolic link that points to a direc‐
              tory

       --hide=PATTERN
              do not list implied entries matching shell  PATTERN  (overridden
              by -a or -A)

       --hyperlink[=WHEN]
              hyperlink file names WHEN

       --indicator-style=WORD
              append indicator with style WORD to entry names: none (default),
              slash (-p), file-type (--file-type), classify (-F)

       -i, --inode
              print the index number of each file

       -I, --ignore=PATTERN
              do not list implied entries matching shell PATTERN

       -k, --kibibytes
              default  to  1024-byte  blocks  for file system usage; used only
              with -s and per directory totals

       -l     use a long listing format

       -L, --dereference
              when showing file information for a symbolic link, show informa‐
              tion for the file the link references rather than for  the  link
              itself

       -m     fill width with a comma separated list of entries

       -n, --numeric-uid-gid
              like -l, but list numeric user and group IDs

       -N, --literal
              print entry names without quoting

       -o     like -l, but do not list group information

       -p, --indicator-style=slash
              append / indicator to directories

       -q, --hide-control-chars
              print ? instead of nongraphic characters

       --show-control-chars
              show nongraphic characters as-is (the default, unless program is
              'ls' and output is a terminal)

       -Q, --quote-name
              enclose entry names in double quotes

       --quoting-style=WORD
              use  quoting style WORD for entry names: literal, locale, shell,
              shell-always,  shell-escape,  shell-escape-always,   c,   escape
              (overrides QUOTING_STYLE environment variable)

       -r, --reverse
              reverse order while sorting

       -R, --recursive
              list subdirectories recursively

       -s, --size
              print the allocated size of each file, in blocks

       -S     sort by file size, largest first

       --sort=WORD
              sort  by  WORD instead of name: none (-U), size (-S), time (-t),
              version (-v), extension (-X), width

       --time=WORD
              select which timestamp used to  display  or  sort;  access  time
              (-u): atime, access, use; metadata change time (-c): ctime, sta‐
              tus;  modified  time (default): mtime, modification; birth time:
              birth, creation;

              with -l, WORD determines which time to show;  with  --sort=time,
              sort by WORD (newest first)

       --time-style=TIME_STYLE
              time/date format with -l; see TIME_STYLE below

       -t     sort by time, newest first; see --time

       -T, --tabsize=COLS
              assume tab stops at each COLS instead of 8

       -u     with  -lt:  sort by, and show, access time; with -l: show access
              time and sort by name; otherwise: sort by  access  time,  newest
              first

       -U     do not sort; list entries in directory order

       -v     natural sort of (version) numbers within text

       -w, --width=COLS
              set output width to COLS.  0 means no limit

       -x     list entries by lines instead of by columns

       -X     sort alphabetically by entry extension

       -Z, --context
              print any security context of each file

       --zero end each output line with NUL, not newline

       -1     list one file per line

       --help display this help and exit

       --version
              output version information and exit

       The  SIZE  argument  is  an  integer and optional unit (example: 10K is
       10*1024).  Units are K,M,G,T,P,E,Z,Y,R,Q (powers of 1024) or  KB,MB,...
       (powers  of 1000).  Binary prefixes can be used, too: KiB=K, MiB=M, and
       so on.

       The TIME_STYLE argument can be  full-iso,  long-iso,  iso,  locale,  or
       +FORMAT.   FORMAT  is  interpreted  like in date(1).  If FORMAT is FOR‐
       MAT1<newline>FORMAT2, then FORMAT1 applies to non-recent files and FOR‐
       MAT2 to recent files.  TIME_STYLE prefixed with 'posix-'  takes  effect
       only  outside  the POSIX locale.  Also the TIME_STYLE environment vari‐
       able sets the default style to use.

       The WHEN argument defaults to  'always'  and  can  also  be  'auto'  or
       'never'.

       Using  color  to distinguish file types is disabled both by default and
       with --color=never.  With --color=auto, ls emits color codes only  when
       standard  output is connected to a terminal.  The LS_COLORS environment
       variable can change the settings.  Use the dircolors(1) command to  set
       it.

   Exit status:
       0      if OK,

       1      if minor problems (e.g., cannot access subdirectory),

       2      if serious trouble (e.g., cannot access command-line argument).

AUTHOR
       Written by Richard M. Stallman and David MacKenzie.

REPORTING BUGS
       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
       Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT
       Copyright  ©  2023  Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
       This is free software: you are free  to  change  and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       Full documentation <https://www.gnu.org/software/coreutils/dir>
       or available locally via: info '(coreutils) dir invocation'

GNU coreutils 9.4                 April 2024                            DIR(1)