linux ls指令（ls命令）

centos7

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ls --help

ls --help

[root@localhost 20220813]# ls --help
Usage: ls [OPTION]... [FILE]...
List information about the FILEs (the current directory by default).
Sort entries alphabetically if none of -cftuvSUX nor --sort is specified.Mandatory arguments to long options are mandatory for short options too.-a, --all                  do not ignore entries starting with .   //不忽略以 . 开头的条目。-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      scale sizes by SIZE before printing them; e.g.,'--block-size=M' prints sizes in units of1,048,576 bytes; see SIZE format below-B, --ignore-backups       do not list implied entries ending with ~-c                         with -lt: sort by, and show, ctime (time of lastmodification of file status information);with -l: show ctime and sort by name;otherwise: sort by ctime, newest first-C                         list entries by columns--color[=WHEN]         colorize the output; WHEN can be 'never', 'auto',or 'always' (the default); more info below-d, --directory            list directories themselves, not their contents-D, --dired                generate output designed for Emacs' dired mode-f                         do not sort, enable -aU, disable -ls --color-F, --classify             append indicator (one of */=>@|) to entries--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-firstgroup directories before files;can be augmented with a --sort option, but anyuse of --sort=none (-U) disables grouping-G, --no-group             in a long listing, don't print group names-h, --human-readable       with -l, print sizes in human readable format(e.g., 1K 234M 2G)--si                   likewise, but use powers of 1000 not 1024-H, --dereference-command-linefollow symbolic links listed on the command line--dereference-command-line-symlink-to-dirfollow each command line symbolic linkthat points to a directory--hide=PATTERN         do not list implied entries matching shell PATTERN(overridden by -a or -A)--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 disk usage-l                         use a long listing format-L, --dereference          when showing file information for a symboliclink, show information for the file the linkreferences 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 raw entry names (don't treat e.g. controlcharacters specially)-o                         like -l, but do not list group information-p, --indicator-style=slashappend / 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, c, escape-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--sort=WORD            sort by WORD instead of name: none (-U), size (-S),time (-t), version (-v), extension (-X)--time=WORD            with -l, show time as WORD instead of defaultmodification time: atime or access or use (-u)ctime or status (-c); also use specified timeas sort key if --sort=time--time-style=STYLE     with -l, show times using style STYLE:full-iso, long-iso, iso, locale, or +FORMAT;FORMAT is interpreted like in 'date'; if FORMATis FORMAT1<newline>FORMAT2, then FORMAT1 appliesto non-recent files and FORMAT2 to recent files;if STYLE is prefixed with 'posix-', STYLEtakes effect only outside the POSIX locale-t                         sort by modification time, newest first //按修改时间排序，最新的在前-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-U                         do not sort; list entries in directory order-v                         natural sort of (version) numbers within text-w, --width=COLS           assume screen width instead of current value-x                         list entries by lines instead of by columns-X                         sort alphabetically by entry extension-1                         list one file per lineSELinux options:--lcontext                 Display security context.   Enable -l. Lineswill probably be too wide for most displays.-Z, --context              Display security context so it fits on mostdisplays.  Displays only mode, user, group,security context and file name.--scontext                 Display only security context and file name.--help     display this help and exit--version  output version information and exitSIZE is an integer and optional unit (example: 10M is 10*1024*1024).  Units
are K, M, G, T, P, E, Z, Y (powers of 1024) or KB, MB, ... (powers of 1000).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 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).GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
For complete documentation, run: info coreutils 'ls invocation'
[root@localhost 20220813]#

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linux ls指令（ls命令）

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ls --help

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