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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Do not quote file names.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 --literal (-N) 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 --quote-name (-Q) option.

‘escape’

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