linux命令学习1-ls

接下来的时间里希望能够每天一个linux命令学习,最差也要一周一个

 

ls --help查看, 同时参考网上的中文说明进行学习

http://www.linuxpk.com/143.html

 

几个要点:

1. ls无法查看 文件夹总体大小,需要用 du folder_name

 

2. ls下文件颜色的含义如下:(这个资料有点老,恐怕有不准的地方)
　　1. 蓝色-->目录
　　2. 绿色-->可执行文件
　　3. 红色-->压缩文件
　　4. 浅蓝色-->链接文件
　　5. 灰色-->其他文件

 

3. 显示当前文件夹下所有文件夹

ls -l |grep '^d'

 

4. 然后把我认为用的上的列举如下:

先汗一个,有些参数真觉得没用

 

  -a, --all                  do not ignore entries starting with .显示所有文件,包括隐藏文件
      --author               with -l, print the author of each file
      --block-size=SIZE      use SIZE-byte blocks
  -B, --ignore-backups       do not list implied entries ending with ~
  -c                         with -lt: sort by, and show, ctime (time of last
                               modification of file status information)
                               with -l: show ctime and sort by name
                               otherwise: sort by ctime
  -F, --classify             append indicator (one of */=>@|) to entries
      --full-time            like -l --time-style=full-iso
  -g                         like -l, but do not list owner
      --group-directories-first
                             group directories before files.
                               augment 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, print sizes in human readable format
                               (e.g., 1K 234M 2G)
      --si                   likewise, but use powers of 1000 not 1024
  -i, --inode                print the index number of each file
  -k                         like --block-size=1K
  -l                         use a long listing format
  -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. control
                               characters specially)
  -o                         like -l, but do not list group information
  -p, --indicator-style=slash
                             append / indicator to directories
  -q, --hide-control-chars   print ? instead of non graphic characters
      --show-control-chars   show non graphic characters as-is (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,
                             extension -X, size -S, time -t, version -v
      --time=WORD            with -l, show time as WORD instead of modification
                             time: atime -u, access -u, use -u, ctime -c,
                             or status -c; use specified time as sort key
                             if --sort=time
      --time-style=STYLE     with -l, show times using style STYLE:
                             full-iso, long-iso, iso, locale, +FORMAT.
                             FORMAT is interpreted like `date'; if FORMAT is
                             FORMAT1<newline>FORMAT2, FORMAT1 applies to
                             non-recent files and FORMAT2 to recent files;
                             if STYLE is prefixed with `posix-', STYLE
                             takes effect only outside the POSIX locale
  -t                         sort by modification 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
  -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
  -Z, --context              print any SELinux security context of each file
  -1                         list one file per line

SIZE may be (or may be an integer optionally followed by) one of following:
kB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T, P, E, Z, Y.