(coreutils.info)General output formatting

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10.1.5 General output formatting
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These options affect the appearance of the overall output.

`-1'
`--format=single-column'
     List one file per line.  This is the default for `ls' when standard
     output is not a terminal.

`-C'
`--format=vertical'
     List files in columns, sorted vertically.  This is the default for
     `ls' if standard output is a terminal.  It is always the default
     for the `dir' program.  GNU `ls' uses variable width columns to
     display as many files as possible in the fewest lines.

`--color [=WHEN]'
     Specify whether to use color for distinguishing file types.  WHEN
     may be omitted, or one of:
        * none - Do not use color at all.  This is the default.

        * auto - Only use color if standard output is a terminal.

        * always - Always use color.
     Specifying `--color' and no WHEN is equivalent to `--color=always'.
     Piping a colorized listing through a pager like `more' or `less'
     usually produces unreadable results.  However, using `more -f'
     does seem to work.

`-F'
`--classify'
`--indicator-style=classify'
     Append a character to each file name indicating the file type.
     Also, for regular files that are executable, append `*'.  The file
     type indicators are `/' for directories, `@' for symbolic links,
     `|' for FIFOs, `=' for sockets, `>' for doors, and nothing for
     regular files.  Do not follow symbolic links listed on the command
     line unless the `--dereference-command-line' (`-H'),
     `--dereference' (`-L'), or
     `--dereference-command-line-symlink-to-dir' options are specified.

`--file-type'
`--indicator-style=file-type'
     Append a character to each file name indicating the file type.
     This is like `-F', except that executables are not marked.

`--indicator-style=WORD'
     Append a character indicator with style WORD to entry names, as
     follows:

    `none'
          Do not append any character indicator; this is the default.

    `slash'
          Append `/' for directories.  This is the same as the `-p'
          option.

    `file-type'
          Append `/' for directories, `@' for symbolic links, `|' for
          FIFOs, `=' for sockets, and nothing for regular files.  This
          is the same as the `--file-type' option.

    `classify'
          Append `*' for executable regular files, otherwise behave as
          for `file-type'.  This is the same as the `-F' or
          `--classify' option.

`-k'
     Print file sizes in 1024-byte blocks, overriding the default block
     size (Note: Block size).  This option is equivalent to
     `--block-size=1K'.

`-m'
`--format=commas'
     List files horizontally, with as many as will fit on each line,
     separated by `, ' (a comma and a space).

`-p'
`--indicator-style=slash'
     Append a `/' to directory names.

`-x'
`--format=across'
`--format=horizontal'
     List the files in columns, sorted horizontally.

`-T COLS'
`--tabsize=COLS'
     Assume that each tab stop is COLS columns wide.  The default is 8.
     `ls' uses tabs where possible in the output, for efficiency.  If
     COLS is zero, do not use tabs at all.

     Some terminal emulators (at least Apple Terminal 1.5 (133) from
     Mac OS X 10.4.8) do not properly align columns to the right of a
     TAB following a non-ASCII byte.  If you use such a terminal
     emulator, use the `-T0' option or put `TABSIZE=0' in your
     environment to tell `ls' to align using spaces, not tabs.

`-w'
`--width=COLS'
     Assume the screen is COLS columns wide.  The default is taken from
     the terminal settings if possible; otherwise the environment
     variable `COLUMNS' is used if it is set; otherwise the default is
     80.