1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
350 lines
9.5 KiB
Groff
350 lines
9.5 KiB
Groff
.\" Copyright (c) 1980, 1990, 1991, 1993, 1994
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Institute of Electrical and Electronics Engineers, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)ls.1 8.7 (Berkeley) 7/29/94
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.\" $FreeBSD$
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.\"
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.Dd July 29, 1994
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.Dt LS 1
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.Os
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.Sh NAME
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.Nm ls
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.Nd list directory contents
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.Sh SYNOPSIS
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.Nm ls
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.Op Fl ACFLRTWacdfiloqrstu1
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.Op Ar file ...
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.Sh DESCRIPTION
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For each operand that names a
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.Ar file
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of a type other than
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directory,
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.Nm ls
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displays its name as well as any requested,
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associated information.
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For each operand that names a
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.Ar file
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of type directory,
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.Nm ls
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displays the names of files contained
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within that directory, as well as any requested, associated
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information.
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.Pp
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If no operands are given, the contents of the current
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directory are displayed.
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If more than one operand is given,
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non-directory operands are displayed first; directory
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and non-directory operands are sorted separately and in
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lexicographical order.
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.Pp
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The following options are available:
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.Bl -tag -width indent
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.It Fl A
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List all entries except for
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.Ql \&.
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and
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.Ql \&.. .
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Always set for the super-user.
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.It Fl C
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Force multi-column output; this is the default when output is to a terminal.
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.It Fl F
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Display a slash (/) immediately after each pathname
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that is a directory, an asterisk (*) after each that is
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executable,
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an at sign (@) after each symbolic link,
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an equals sign (=) after each socket,
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a percent sign (%) after each whiteout,
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and a vertical bar (|) after each that is a
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.Tn FIFO .
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.It Fl L
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If argument is a symbolic link, list the file or directory the link references
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rather than the link itself.
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.It Fl R
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Recursively list subdirectories encountered.
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.It Fl T
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Display complete time information for the file, including
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month, day, hour, minute, second, and year.
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.It Fl W
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Display whiteouts when scanning directories. (UNIMPLEMENTED)
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.It Fl a
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Include directory entries whose names begin with a
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dot (.).
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.It Fl c
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Use time when file status was last changed for sorting or printing.
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.It Fl d
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Directories are listed as plain files (not searched recursively) and
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symbolic links in the argument list are not indirected through.
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.It Fl f
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Output is not sorted.
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.It Fl i
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For each file, print the file's file serial number (inode number).
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.It Fl k
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If the
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.Fl s
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option is specified, print the file size allocation in kilobytes,
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not blocks.
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.It Fl l
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(The lowercase letter ``ell.'') List in long format. (See below.)
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If the output is to a terminal, a total sum for all the file
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sizes is output on a line before the long listing.
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.It Fl o
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Include the file flags in a long
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.Pq Fl l
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output
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.It Fl q
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Force printing of non-graphic characters in file names as
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the character `?'; this is the default when output is to a terminal.
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.It Fl r
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Reverse the order of the sort to get reverse
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lexicographical order or the oldest entries first.
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.It Fl s
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Display the number of file system blocks actually used by each file, in units
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of 512 bytes, where partial units are rounded up to the next integer value.
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If the output is to a terminal, a total sum for all the file
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sizes is output on a line before the listing.
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.It Fl t
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Sort by time modified (most recently modified
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first) before sorting the operands by lexicographical
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order.
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.It Fl u
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Use time of last access,
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instead of last modification
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of the file for sorting
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.Pq Fl t
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or printing
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.Pq Fl l .
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.It Fl \&1
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(The numeric digit ``one.'') Force output to be
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one entry per line.
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This is the default when
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output is not to a terminal.
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.El
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.Pp
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The
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.Fl 1 ,
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.Fl C ,
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and
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.Fl l
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options all override each other; the last one specified determines
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the format used.
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.Pp
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The
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.Fl c ,
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and
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.Fl u
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options override each other; the last one specified determines
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the file time used.
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.Pp
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By default,
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.Nm ls
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lists one entry per line to standard
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output; the exceptions are to terminals or when the
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.Fl C
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option is specified.
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.Pp
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File information is displayed with one or more
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<blank>s separating the information associated with the
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.Fl i ,
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.Fl s ,
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and
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.Fl l
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options.
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.Ss The Long Format
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If the
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.Fl l
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option is given, the following information
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is displayed for each file:
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file mode,
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number of links, owner name, group name,
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number of bytes in the file, abbreviated
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month, day-of-month file was last modified,
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hour file last modified, minute file last
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modified, and the pathname.
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In addition, for each directory whose contents are displayed, the total
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number of 512-byte blocks used by the files in the directory is displayed
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on a line by itself immediately before the information for the files in the
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directory.
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.Pp
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If the modification time of the file is more than 6 months
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in the past or future, then the year of the last modification
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is displayed in place of the hour and minute fields.
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.Pp
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If the owner or group names are not a known user or group name
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the numeric ID's are displayed.
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.Pp
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If the file is a character special or block special file,
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the major and minor device numbers for the file are displayed
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in the size field. If the file is a symbolic link the pathname of the
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linked-to file is preceded by
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.Dq \-> .
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.Pp
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The file mode printed under the
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.Fl l
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option consists of the
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entry type, owner permissions, and group permissions.
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The entry type character describes the type of file, as
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follows:
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.Pp
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.Bl -tag -width 4n -offset indent -compact
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.It Sy b
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Block special file.
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.It Sy c
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Character special file.
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.It Sy d
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Directory.
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.It Sy l
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Symbolic link.
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.It Sy s
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Socket link.
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.It Sy p
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.Tn FIFO .
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.It Sy \-
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Regular file.
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.El
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.Pp
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The next three fields
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are three characters each:
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owner permissions,
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group permissions, and
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other permissions.
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Each field has three character positions:
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.Bl -enum -offset indent
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.It
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If
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.Sy r ,
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the file is readable; if
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.Sy \- ,
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it is not readable.
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.It
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If
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.Sy w ,
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the file is writable; if
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.Sy \- ,
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it is not writable.
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.It
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The first of the following that applies:
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.Bl -tag -width 4n -offset indent
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.It Sy S
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If in the owner permissions, the file is not executable and
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set-user-ID mode is set.
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If in the group permissions, the file is not executable
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and set-group-ID mode is set.
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.It Sy s
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If in the owner permissions, the file is executable
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and set-user-ID mode is set.
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If in the group permissions, the file is executable
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and setgroup-ID mode is set.
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.It Sy x
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The file is executable or the directory is
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searchable.
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.It Sy \-
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The file is neither readable, writeable, executable,
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nor set-user-ID nor set-group-ID mode, nor sticky. (See below.)
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.El
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.Pp
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These next two apply only to the third character in the last group
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(other permissions).
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.Bl -tag -width 4n -offset indent
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.It Sy T
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The sticky bit is set
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(mode
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.Li 1000 ) ,
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but not execute or search permission. (See
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.Xr chmod 1
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or
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.Xr sticky 8 . )
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.It Sy t
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The sticky bit is set (mode
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.Li 1000 ) ,
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and is searchable or executable.
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(See
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.Xr chmod 1
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or
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.Xr sticky 8 . )
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.El
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.El
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.Pp
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The
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.Nm ls
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utility exits 0 on success, and >0 if an error occurs.
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.Sh ENVIRONMENTAL VARIABLES
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The following environment variables affect the execution of
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.Nm ls :
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.Bl -tag -width BLOCKSIZE
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.It Ev BLOCKSIZE
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If the environmental variable
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.Ev BLOCKSIZE
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is set, the block counts
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(see
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.Fl s )
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will be displayed in units of that size block.
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.It COLUMNS
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If this variable contains a string representing a
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decimal integer, it is used as the
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column position width for displaying
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multiple-text-column output.
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The
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.Nm ls
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utility calculates how
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many pathname text columns to display
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based on the width provided.
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(See
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.Fl C . )
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.It Ev TZ
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The timezone to use when displaying dates.
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See
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.Xr environ 7
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for more information.
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.El
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.Sh COMPATIBILITY
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The group field is now automatically included in the long listing for
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files in order to be compatible with the
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.St -p1003.2
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specification.
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.Sh SEE ALSO
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.Xr chmod 1 ,
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.Xr symlink 7 ,
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.Xr sticky 8
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.Sh HISTORY
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An
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.Nm ls
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command appeared in
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.At v1 .
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.Sh STANDARDS
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The
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.Nm ls
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function is expected to be a superset of the
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.St -p1003.2
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specification.
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