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10.1.6 Formatting the file names

These options change how file names themselves are printed.

-b
--escape
--quoting-style=escape

Quote nongraphic characters in file names using alphabetic and octal backslash sequences like those used in C.

-N
--literal
--quoting-style=literal

Do not quote file names. However, with ls nongraphic characters are still printed as question marks if the output is a terminal and you do not specify the --show-control-chars option.

-q
--hide-control-chars

Print question marks instead of nongraphic characters in file names. This is the default if the output is a terminal and the program is ls.

-Q
--quote-name
--quoting-style=c

Enclose file names in double quotes and quote nongraphic characters as in C.

--quoting-style=word

Use style word to quote file names and other strings that may contain arbitrary characters. The word should be one of the following:

literal

Output strings as-is; this is the same as the -N or --literal option.

shell

Quote strings for the shell if they contain shell metacharacters or would cause ambiguous output. The quoting is suitable for POSIX-compatible shells like bash, but it does not always work for incompatible shells like csh.

shell-always

Quote strings for the shell, even if they would normally not require quoting.

shell-escape

Like ‘shell’, but also quoting non-printable characters using the POSIX proposed ‘$''’ syntax suitable for most shells.

shell-escape-always

Like ‘shell-escape’, but quote strings even if they would normally not require quoting.

c

Quote strings as for C character string literals, including the surrounding double-quote characters; this is the same as the -Q or --quote-name option.

escape

Quote strings as for C character string literals, except omit the surrounding double-quote characters; this is the same as the -b or --escape option.

clocale

Quote strings as for C character string literals, except use surrounding quotation marks appropriate for the locale.

locale

Quote strings as for C character string literals, except use surrounding quotation marks appropriate for the locale, and quote 'like this' instead of "like this" in the default C locale. This looks nicer on many displays.

You can specify the default value of the --quoting-style option with the environment variable QUOTING_STYLE. If that environment variable is not set, the default value is ‘shell-escape’ when the output is a terminal, and ‘literal’ otherwise.

--show-control-chars

Print nongraphic characters as-is in file names. This is the default unless the output is a terminal and the program is ls.


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