xref: /freebsd/bin/ls/ls.1 (revision 9768746b)
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32.\"     @(#)ls.1	8.7 (Berkeley) 7/29/94
33.\" $FreeBSD$
34.\"
35.Dd October 31, 2022
36.Dt LS 1
37.Os
38.Sh NAME
39.Nm ls
40.Nd list directory contents
41.Sh SYNOPSIS
42.Nm
43.Op Fl ABCFGHILPRSTUWZabcdfghiklmnopqrstuvwxy1\&,
44.Op Fl -color Ns = Ns Ar when
45.Op Fl D Ar format
46.Op Ar
47.Sh DESCRIPTION
48For each operand that names a
49.Ar file
50of a type other than
51directory,
52.Nm
53displays its name as well as any requested,
54associated information.
55For each operand that names a
56.Ar file
57of type directory,
58.Nm
59displays the names of files contained
60within that directory, as well as any requested, associated
61information.
62.Pp
63If no operands are given, the contents of the current
64directory are displayed.
65If more than one operand is given,
66non-directory operands are displayed first; directory
67and non-directory operands are sorted separately and in
68lexicographical order.
69.Pp
70The following options are available:
71.Bl -tag -width indent
72.It Fl A
73Include directory entries whose names begin with a
74dot
75.Pq Sq Pa \&.
76except for
77.Pa \&.
78and
79.Pa .. .
80Automatically set for the super-user unless
81.Fl I
82is specified.
83.It Fl B
84Force printing of non-printable characters (as defined by
85.Xr ctype 3
86and current locale settings) in file names as
87.Li \e Ns Va xxx ,
88where
89.Va xxx
90is the numeric value of the character in octal.
91This option is not defined in
92.St -p1003.1-2008 .
93.It Fl C
94Force multi-column output; this is the default when output is to a terminal.
95.It Fl D Ar format
96When printing in the long
97.Pq Fl l
98format, use
99.Ar format
100to format the date and time output.
101The argument
102.Ar format
103is a string used by
104.Xr strftime 3 .
105Depending on the choice of format string, this may result in a
106different number of columns in the output.
107This option overrides the
108.Fl T
109option.
110This option is not defined in
111.St -p1003.1-2008 .
112.It Fl F
113Display a slash
114.Pq Ql /
115immediately after each pathname that is a directory,
116an asterisk
117.Pq Ql *
118after each that is executable,
119an at sign
120.Pq Ql @
121after each symbolic link,
122an equals sign
123.Pq Ql =
124after each socket,
125a percent sign
126.Pq Ql %
127after each whiteout,
128and a vertical bar
129.Pq Ql \&|
130after each that is a
131.Tn FIFO .
132.It Fl G
133Enable colorized output.
134This option is equivalent to defining
135.Ev CLICOLOR
136or
137.Ev COLORTERM
138in the environment and setting
139.Fl -color Ns = Ns Ar auto .
140(See below.)
141This functionality can be compiled out by removing the definition of
142.Ev COLORLS .
143This option is not defined in
144.St -p1003.1-2008 .
145.It Fl H
146Symbolic links on the command line are followed.
147This option is assumed if
148none of the
149.Fl F , d ,
150or
151.Fl l
152options are specified.
153.It Fl I
154Prevent
155.Fl A
156from being automatically set for the super-user.
157This option is not defined in
158.St -p1003.1-2008 .
159.It Fl L
160If argument is a symbolic link, list the file or directory the link references
161rather than the link itself.
162This option cancels the
163.Fl P
164option.
165.It Fl P
166If argument is a symbolic link, list the link itself rather than the
167object the link references.
168This option cancels the
169.Fl H
170and
171.Fl L
172options.
173.It Fl R
174Recursively list subdirectories encountered.
175.It Fl S
176Sort by size (largest file first) before sorting the operands in
177lexicographical order.
178.It Fl T
179When printing in the long
180.Pq Fl l
181format, display complete time information for the file, including
182month, day, hour, minute, second, and year.
183The
184.Fl D
185option gives even more control over the output format.
186This option is not defined in
187.St -p1003.1-2008 .
188.It Fl U
189Use time when file was created for sorting or printing.
190This option is not defined in
191.St -p1003.1-2008 .
192.It Fl W
193Display whiteouts when scanning directories.
194This option is not defined in
195.St -p1003.1-2008 .
196.It Fl Z
197Display each file's MAC label; see
198.Xr maclabel 7 .
199This option is not defined in
200.St -p1003.1-2008 .
201.It Fl a
202Include directory entries whose names begin with a
203dot
204.Pq Sq Pa \&. .
205.It Fl b
206As
207.Fl B ,
208but use
209.Tn C
210escape codes whenever possible.
211This option is not defined in
212.St -p1003.1-2008 .
213.It Fl c
214Use time when file status was last changed for sorting or printing.
215.It Fl -color Ns = Ns Ar when
216Output colored escape sequences based on
217.Ar when ,
218which may be set to either
219.Cm always ,
220.Cm auto ,
221or
222.Cm never .
223.Pp
224.Cm always
225will make
226.Nm
227always output color.
228If
229.Ev TERM
230is unset or set to an invalid terminal, then
231.Nm
232will fall back to explicit
233.Tn ANSI
234escape sequences without the help of
235.Xr termcap 5 .
236.Cm always
237is the default if
238.Fl -color
239is specified without an argument.
240.Pp
241.Cm auto
242will make
243.Nm
244output escape sequences based on
245.Xr termcap 5 ,
246but only if
247.Dv stdout
248is a tty and either the
249.Fl G
250flag is specified or the
251.Ev COLORTERM
252environment variable is set and not empty.
253.Pp
254.Cm never
255will disable color regardless of environment variables.
256.Cm never
257is the default when neither
258.Fl -color
259nor
260.Fl G
261is specified.
262.Pp
263For compatibility with GNU coreutils,
264.Nm
265supports
266.Cm yes
267or
268.Cm force
269as equivalent to
270.Cm always ,
271.Cm no
272or
273.Cm none
274as equivalent to
275.Cm never ,
276and
277.Cm tty
278or
279.Cm if-tty
280as equivalent to
281.Cm auto .
282.It Fl d
283Directories are listed as plain files (not searched recursively).
284.It Fl f
285Output is not sorted.
286This option turns on
287.Fl a .
288It also negates the effect of the
289.Fl r ,
290.Fl S
291and
292.Fl t
293options.
294As allowed by
295.St -p1003.1-2008 ,
296this option has no effect on the
297.Fl d ,
298.Fl l ,
299.Fl R
300and
301.Fl s
302options.
303.It Fl g
304This option has no effect.
305It is only available for compatibility with
306.Bx 4.3 ,
307where it was used to display the group name in the long
308.Pq Fl l
309format output.
310This option is incompatible with
311.St -p1003.1-2008 .
312.It Fl h
313When used with the
314.Fl l
315option, use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte
316and Petabyte in order to reduce the number of digits to four or fewer
317using base 2 for sizes.
318This option is not defined in
319.St -p1003.1-2008 .
320.It Fl i
321For each file, print the file's file serial number (inode number).
322.It Fl k
323This has the same effect as setting environment variable
324.Ev BLOCKSIZE
325to 1024, except that it also nullifies any
326.Fl h
327options to its left.
328.It Fl l
329(The lowercase letter
330.Dq ell . )
331List files in the long format, as described in the
332.Sx The Long Format
333subsection below.
334.It Fl m
335Stream output format; list files across the page, separated by commas.
336.It Fl n
337Display user and group IDs numerically rather than converting to a user
338or group name in a long
339.Pq Fl l
340output.
341.It Fl o
342Include the file flags in a long
343.Pq Fl l
344output.
345This option is incompatible with
346.St -p1003.1-2008 .
347See
348.Xr chflags 1
349for a list of file flags and their meanings.
350.It Fl p
351Write a slash
352.Pq Ql /
353after each filename if that file is a directory.
354.It Fl q
355Force printing of non-graphic characters in file names as
356the character
357.Ql \&? ;
358this is the default when output is to a terminal.
359.It Fl r
360Reverse the order of the sort.
361.It Fl s
362Display the number of blocks used in the file system by each file.
363Block sizes and directory totals are handled as described in
364.Sx The Long Format
365subsection below, except (if the long format is not also requested)
366the directory totals are not output when the output is in a
367single column, even if multi-column output is requested.
368.It Fl t
369Sort by descending time modified (most recently modified first).
370If two files have the same modification timestamp, sort their names
371in ascending lexicographical order.
372The
373.Fl r
374option reverses both of these sort orders.
375.Pp
376Note that these sort orders are contradictory: the time sequence is in
377descending order, the lexicographical sort is in ascending order.
378This behavior is mandated by
379.St -p1003.2 .
380This feature can cause problems listing files stored with sequential names on
381FAT file systems, such as from digital cameras, where it is possible to have
382more than one image with the same timestamp.
383In such a case, the photos cannot be listed in the sequence in which
384they were taken.
385To ensure the same sort order for time and for lexicographical sorting, set the
386environment variable
387.Ev LS_SAMESORT
388or use the
389.Fl y
390option.
391This causes
392.Nm
393to reverse the lexicographical sort order when sorting files with the
394same modification timestamp.
395.It Fl u
396Use time of last access,
397instead of time of last modification
398of the file for sorting
399.Pq Fl t
400or printing
401.Pq Fl l .
402.It Fl v
403Sort following a natural ordering, using
404.Xr strverscmp 3
405instead of
406.Xr strcoll 3
407as the comparison function.
408E.g., files lexicographically ordered
409"bloem1", "bloem10", and "bloem9" would instead be ordered
410"bloem1", "bloem9", and "bloem10", as one would perhaps expect.
411.It Fl w
412Force raw printing of non-printable characters.
413This is the default
414when output is not to a terminal.
415This option is not defined in
416.St -p1003.1-2001 .
417.It Fl x
418The same as
419.Fl C ,
420except that the multi-column output is produced with entries sorted
421across, rather than down, the columns.
422.It Fl y
423When the
424.Fl t
425option is set, sort the alphabetical output in the same order as the time output.
426This has the same effect as setting
427.Ev LS_SAMESORT .
428See the description of the
429.Fl t
430option for more details.
431This option is not defined in
432.St -p1003.1-2001 .
433.It Fl 1
434(The numeric digit
435.Dq one . )
436Force output to be
437one entry per line.
438This is the default when
439output is not to a terminal.
440.It Fl ,
441(Comma) When the
442.Fl l
443option is set, print file sizes grouped and separated by thousands using the
444non-monetary separator returned by
445.Xr localeconv 3 ,
446typically a comma or period.
447If no locale is set, or the locale does not have a non-monetary separator, this
448option has no effect.
449This option is not defined in
450.St -p1003.1-2001 .
451.El
452.Pp
453The
454.Fl 1 , C , x ,
455and
456.Fl l
457options all override each other; the last one specified determines
458the format used.
459.Pp
460The
461.Fl c , u ,
462and
463.Fl U
464options all override each other; the last one specified determines
465the file time used.
466.Pp
467The
468.Fl S
469and
470.Fl t
471options override each other; the last one specified determines
472the sort order used.
473.Pp
474The
475.Fl B , b , w ,
476and
477.Fl q
478options all override each other; the last one specified determines
479the format used for non-printable characters.
480.Pp
481The
482.Fl H , L
483and
484.Fl P
485options all override each other (either partially or fully); they
486are applied in the order specified.
487.Pp
488By default,
489.Nm
490lists one entry per line to standard
491output; the exceptions are to terminals or when the
492.Fl C
493or
494.Fl x
495options are specified.
496.Pp
497File information is displayed with one or more
498.Ao blank Ac Ns s
499separating the information associated with the
500.Fl i , s ,
501and
502.Fl l
503options.
504.Ss The Long Format
505If the
506.Fl l
507option is given, the following information
508is displayed for each file:
509file mode,
510number of links, owner name, group name,
511MAC label,
512number of bytes in the file, abbreviated
513month, day-of-month file was last modified,
514hour file last modified, minute file last
515modified, and the pathname.
516.Pp
517If the modification time of the file is more than 6 months
518in the past or future, and the
519.Fl D
520or
521.Fl T
522are not specified,
523then the year of the last modification
524is displayed in place of the hour and minute fields.
525.Pp
526If the owner or group names are not a known user or group name,
527or the
528.Fl n
529option is given,
530the numeric ID's are displayed.
531.Pp
532If the file is a character special or block special file,
533the device number for the file is displayed in the size field.
534If the file is a symbolic link the pathname of the
535linked-to file is preceded by
536.Dq Li -> .
537.Pp
538The listing of a directory's contents is preceded
539by a labeled total number of blocks used in the file system by the files
540which are listed as the directory's contents
541(which may or may not include
542.Pa \&.
543and
544.Pa ..
545and other files which start with a dot, depending on other options).
546.Pp
547The default block size is 512 bytes.
548The block size may be set with option
549.Fl k
550or environment variable
551.Ev BLOCKSIZE .
552Numbers of blocks in the output will have been rounded up so the
553numbers of bytes is at least as many as used by the corresponding
554file system blocks (which might have a different size).
555.Pp
556The file mode printed under the
557.Fl l
558option consists of the
559entry type and the permissions.
560The entry type character describes the type of file, as
561follows:
562.Pp
563.Bl -tag -width 4n -offset indent -compact
564.It Sy \-
565Regular file.
566.It Sy b
567Block special file.
568.It Sy c
569Character special file.
570.It Sy d
571Directory.
572.It Sy l
573Symbolic link.
574.It Sy p
575.Tn FIFO .
576.It Sy s
577Socket.
578.It Sy w
579Whiteout.
580.El
581.Pp
582The next three fields
583are three characters each:
584owner permissions,
585group permissions, and
586other permissions.
587Each field has three character positions:
588.Bl -enum -offset indent
589.It
590If
591.Sy r ,
592the file is readable; if
593.Sy \- ,
594it is not readable.
595.It
596If
597.Sy w ,
598the file is writable; if
599.Sy \- ,
600it is not writable.
601.It
602The first of the following that applies:
603.Bl -tag -width 4n -offset indent
604.It Sy S
605If in the owner permissions, the file is not executable and
606set-user-ID mode is set.
607If in the group permissions, the file is not executable
608and set-group-ID mode is set.
609.It Sy s
610If in the owner permissions, the file is executable
611and set-user-ID mode is set.
612If in the group permissions, the file is executable
613and setgroup-ID mode is set.
614.It Sy x
615The file is executable or the directory is
616searchable.
617.It Sy \-
618The file is neither readable, writable, executable,
619nor set-user-ID nor set-group-ID mode, nor sticky.
620(See below.)
621.El
622.Pp
623These next two apply only to the third character in the last group
624(other permissions).
625.Bl -tag -width 4n -offset indent
626.It Sy T
627The sticky bit is set
628(mode
629.Li 1000 ) ,
630but not execute or search permission.
631(See
632.Xr chmod 1
633or
634.Xr sticky 7 . )
635.It Sy t
636The sticky bit is set (mode
637.Li 1000 ) ,
638and is searchable or executable.
639(See
640.Xr chmod 1
641or
642.Xr sticky 7 . )
643.El
644.El
645.Pp
646The next field contains a
647plus
648.Pq Ql +
649character if the file has an ACL, or a
650space
651.Pq Ql " "
652if it does not.
653The
654.Nm
655utility does not show the actual ACL;
656use
657.Xr getfacl 1
658to do this.
659.Sh ENVIRONMENT
660The following environment variables affect the execution of
661.Nm :
662.Bl -tag -width ".Ev CLICOLOR_FORCE"
663.It Ev BLOCKSIZE
664If this is set, its value, rounded up to 512 or down to a
665multiple of 512, will be used as the block size in bytes by the
666.Fl l
667and
668.Fl s
669options.
670See
671.Sx The Long Format
672subsection for more information.
673.It Ev CLICOLOR
674Use
675.Tn ANSI
676color sequences to distinguish file types.
677See
678.Ev LSCOLORS
679below.
680In addition to the file types mentioned in the
681.Fl F
682option some extra attributes (setuid bit set, etc.) are also displayed.
683The colorization is dependent on a terminal type with the proper
684.Xr termcap 5
685capabilities.
686The default
687.Dq Li cons25
688console has the proper capabilities,
689but to display the colors in an
690.Xr xterm 1 Pq Pa ports/x11/xterm ,
691for example,
692the
693.Ev TERM
694variable must be set to
695.Dq Li xterm-color .
696Other terminal types may require similar adjustments.
697Colorization
698is silently disabled if the output is not directed to a terminal
699unless the
700.Ev CLICOLOR_FORCE
701variable is defined or
702.Fl -color
703is set to
704.Dq always .
705.It Ev CLICOLOR_FORCE
706Color sequences are normally disabled if the output is not directed to
707a terminal.
708This can be overridden by setting this variable.
709The
710.Ev TERM
711variable still needs to reference a color capable terminal however
712otherwise it is not possible to determine which color sequences to
713use.
714.It Ev COLORTERM
715See description for
716.Ev CLICOLOR
717above.
718.It Ev COLUMNS
719If this variable contains a string representing a
720decimal integer, it is used as the
721column position width for displaying
722multiple-text-column output.
723The
724.Nm
725utility calculates how
726many pathname text columns to display
727based on the width provided.
728(See
729.Fl C
730and
731.Fl x . )
732.It Ev LANG
733The locale to use when determining the order of day and month in the long
734.Fl l
735format output.
736See
737.Xr environ 7
738for more information.
739.It Ev LSCOLORS
740The value of this variable describes what color to use for which
741attribute when colors are enabled with
742.Ev CLICOLOR
743or
744.Ev COLORTERM .
745This string is a concatenation of pairs of the format
746.Ar f Ns Ar b ,
747where
748.Ar f
749is the foreground color and
750.Ar b
751is the background color.
752When the background color is capitalized, the text will underlined.
753.Pp
754The color designators are as follows:
755.Pp
756.Bl -tag -width 4n -offset indent -compact
757.It Sy a
758black
759.It Sy b
760red
761.It Sy c
762green
763.It Sy d
764brown
765.It Sy e
766blue
767.It Sy f
768magenta
769.It Sy g
770cyan
771.It Sy h
772light grey
773.It Sy A
774bold or underlined black, usually shows up as dark grey
775.It Sy B
776bold or underlined red
777.It Sy C
778bold or underlined green
779.It Sy D
780bold or underlined brown, usually shows up as yellow
781.It Sy E
782bold or underlined blue
783.It Sy F
784bold or underlined magenta
785.It Sy G
786bold or underlined cyan
787.It Sy H
788bold or underlined light grey; looks like bright white
789.It Sy x
790default foreground or background
791.It Sy X
792default foreground or background, with an underline or bold
793.El
794.Pp
795Note that the above are standard
796.Tn ANSI
797colors.
798The actual display may differ
799depending on the color capabilities of the terminal in use.
800.Pp
801The order of the attributes are as follows:
802.Pp
803.Bl -enum -offset indent -compact
804.It
805directory
806.It
807symbolic link
808.It
809socket
810.It
811pipe
812.It
813executable
814.It
815block special
816.It
817character special
818.It
819executable with setuid bit set
820.It
821executable with setgid bit set
822.It
823directory writable to others, with sticky bit
824.It
825directory writable to others, without sticky bit
826.El
827.Pp
828The default is
829.Qq "exfxcxdxbxegedabagacad" ,
830i.e., blue foreground and
831default background for regular directories, black foreground and red
832background for setuid executables, etc.
833.It Ev LS_COLWIDTHS
834If this variable is set, it is considered to be a
835colon-delimited list of minimum column widths.
836Unreasonable
837and insufficient widths are ignored (thus zero signifies
838a dynamically sized column).
839Not all columns have changeable widths.
840The fields are,
841in order: inode, block count, number of links, user name,
842group name, flags, file size, file name.
843.It Ev LS_SAMESORT
844If this variable is set, the
845.Fl t
846option sorts the names of files with the same modification timestamp in the same
847sense as the time sort.
848See the description of the
849.Fl t
850option for more details.
851.It Ev TERM
852The
853.Ev CLICOLOR
854and
855.Ev COLORTERM
856functionality depends on a terminal type with color capabilities.
857.It Ev TZ
858The timezone to use when displaying dates.
859See
860.Xr environ 7
861for more information.
862.El
863.Sh EXIT STATUS
864.Ex -std
865.Sh EXAMPLES
866List the contents of the current working directory in long format:
867.Pp
868.Dl $ ls -l
869.Pp
870In addition to listing the contents of the current working directory in
871long format, show inode numbers, file flags (see
872.Xr chflags 1 ) ,
873and suffix each filename with a symbol representing its file type:
874.Pp
875.Dl $ ls -lioF
876.Pp
877List the files in
878.Pa /var/log ,
879sorting the output such that the mostly recently modified entries are
880printed first:
881.Pp
882.Dl $ ls -lt /var/log
883.Sh COMPATIBILITY
884The group field is now automatically included in the long listing for
885files in order to be compatible with the
886.St -p1003.2
887specification.
888.Sh SEE ALSO
889.Xr chflags 1 ,
890.Xr chmod 1 ,
891.Xr getfacl 1 ,
892.Xr sort 1 ,
893.Xr xterm 1 Pq Pa ports/x11/xterm ,
894.Xr localeconv 3 ,
895.Xr strcoll 3 ,
896.Xr strftime 3 ,
897.Xr strmode 3 ,
898.Xr strverscmp 3 ,
899.Xr termcap 5 ,
900.Xr maclabel 7 ,
901.Xr sticky 7 ,
902.Xr symlink 7 ,
903.Xr getfmac 8
904.Sh STANDARDS
905With the exception of options
906.Fl g , n
907and
908.Fl o ,
909the
910.Nm
911utility conforms to
912.St -p1003.1-2001
913and
914.St -p1003.1-2008 .
915The options
916.Fl B , D , G , I , T , U , W , Z , b , h , v , w , y
917and
918.Fl ,
919are non-standard extensions.
920.Pp
921The ACL support is compatible with
922.Tn IEEE
923Std\~1003.2c
924.Pq Dq Tn POSIX Ns .2c
925Draft\~17
926(withdrawn).
927.Sh HISTORY
928An
929.Nm
930command appeared in
931.At v1 .
932.Pp
933The
934.Fl v
935option was added in
936.Fx 14.0 .
937.Sh BUGS
938To maintain backward compatibility, the relationships between the many
939options are quite complex.
940.Pp
941The exception mentioned in the
942.Fl s
943option description might be a feature that was
944based on the fact that single-column output
945usually goes to something other than a terminal.
946It is debatable whether this is a design bug.
947.Pp
948.St -p1003.2
949mandates opposite sort orders for files with the same timestamp when
950sorting with the
951.Fl t
952option.
953