.Dd January 4, 2016
.Dt LR 1
.Os
.Sh NAME
.Nm lr
.Nd list files, recursively
.Sh SYNOPSIS
.Nm
.Op Fl 0 | Fl F | Fl l | Fl S | Fl f Ar fmt
.Op Fl D
.Op Fl H | Fl L
.Op Fl 1AQdhsx
.Op Fl U | Fl o Ar ord
.Op Fl t Ar test
.Ar path\ ...
.Sh DESCRIPTION
.Nm
is a versatile tool to generate file listings with configurable
formatting, ordering and filtering.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl 0
Output filenames seperated by NUL bytes (implies
.Fl Q ) .
.It Fl F
Output filenames and an indicator of their file type (one of
.Sq Li */=>@| ) .
.It Fl l
Long output ala
.Ic ls -l .
.It Fl S
Output inspired by
BSD
.Xr stat 1 .
.It Fl f Ar fmt
Custom formatting, see
.Sx FORMATTING .
.It Fl D
Use depth first traversal.
.Ic prune
will not work, but
.Ic entries
and
.Ic total
is computed.
.It Fl H
Only follow symlinks on command line (default: don't follow symlinks).
.It Fl L
Follow all symlinks.
.It Fl 1
Don't go below one level of directories.
.It Fl A
Don't list files starting with a dot.
.It Fl Q
Don't shell quote file names.
.It Fl d
Don't enter directories.
.It Fl h
Print human readable size for
.Fl l
(also
.Ic %s ) .
.It Fl s
Strip directory prefix passed on command line.
.It Fl x
Don't enter other filesystems.
.It Fl U
Don't sort results.
.It Fl o Ar ord
Sort according to
.Ar ord ,
see
.Sx SORT ORDER .
.It Fl t Ar test
Only show files matching the expression
.Ar test ,
see
.Sx TESTS .
Multiple occurences of
.Fl t
are regarded as a conjunction.
.El
.Sh FORMATTING
.Nm
format strings support the following escape sequences:
.Pp
.Bl -tag -compact -width Ds
.It Ic \ea , \eb , \ef , \en , \er , \ev , \e0
Special characters as in C.
.It Ic \&%%
A plain
.Sq % .
.It Ic \&%s
File size in bytes
.It Ic \&%S
File size, with human readable unit
.It Ic \&%b
File size in 512-byte blocks
.It Ic \&%k
File size in 1024-byte blocks
.It Ic \&%d
Path depth
.It Ic \&%D
Device number
.Va ( stat.st_dev )
.It Ic \&%R
Device ID for special files
.Va ( stat.st_rdev )
.It Ic \&%i
Inode number
.It Ic \&%I
One space character for every depth level
.It Ic \&%p
Full path
.Ic ( \&%P
if
.Fl s
is used)
.It Ic \&%P
Full path without command line argument prefix
.It Ic \&%l
Symlink target
.It Ic \&%n
Number of hardlinks
.It Ic \&%F
File indicator type symbol (one of
.Sq Li */=>@| )
.It Ic \&%f
File basename (everything after last
.Li / )
.It Ic \&%A- , %C- , %T-
relative age for atime/ctime/mtime.
.It Ic \&%A Ns Ar x , Ic \&%C Ns Ar x , Ic \&%T Ns Ar x
result of
.Xr strftime 3
for
.Ic \&% Ns Ar x
on atime/ctime/mtime
.It Ic \&%m
Octal file permissions
.It Ic \&%M
ls-style symbolic file permissions
.It Ic \&%y
ls-style symbolic file type
.Sq Li ( bcdfls )
.It Ic \&%g
Group name
.It Ic \&%G
Numeric gid
.It Ic \&%u
User name
.It Ic \&%U
Numeric uid
.It Ic \&%e
Number of entries in directories (only with
.Fl D )
.It Ic \&%t
Total size used by accepted files in directories (only with
.Fl D )
.It Ic \&%Y
Type of the filesystem the file resides on
.El
.Sh SORT ORDER
Sort order is string consisting of the following letters.
Uppercase letters reverse sorting.
Default sort order is
.Sq Ic n .
.Pp
.Bl -tag -compact -width Ds
.It Ic a
atime
.It Ic c
ctime
.It Ic d
path depth
.It Ic e
file extension
.It Ic i
inode number
.It Ic m
mtime
.It Ic n
file name
.It Ic p
directory name
.It Ic s
file size
.It Ic t
file type.
This sorts all directories before other files.
.It Ic v
File name as version numbers (sorts
.Sq 2
before
.Sq 10 ) .
.El
.Pp
E.g.\&
.Sq Ic Sn
sorts first by size, smallest last, and then by name
(in case sizes are equal).
.Sh TESTS
.Nm
tests are given by the following EBNF:
.Bd -literal
<expr>     ::= <expr> || <expr>  -- disjunction
             | <expr> && <expr>  -- conjunction
             | ! <expr>          -- negation
             | ( <expr )
             | <timeprop> <numop> <dur>
             | <numprop> <numop> <num>
             | <strprop> <strop> <str>
             | <typetest>
             | <modetest>
             | prune             -- do not traverse into subdirectories
             | print             -- always true value

<timeprop> ::= atime | ctime | mtime

<numprop>  ::= depth | dev | entries | gid | inode
             | links | mode | rdev | size | total | uid

<numop>    ::= <= | < | >= | > | == | !=

<dur>      ::= "./path"          -- mtime of relative path
             | "/path"           -- mtime of absolute path
             | "YYYY-MM-DD HH:MM:SS"
             | "YYYY-MM-DD"      -- at midnight
             | "HH:MM:SS"        -- today
             | "HH:MM"           -- today
             | "-[0-9]+d"        -- n days ago at midnight
             | "-[0-9]+h"        -- n hours before now
             | "-[0-9]+m"        -- n minutes before now
             | "-[0-9]+s"        -- n seconds before now
             | [0-9]+            -- absolute epoch time

<num>      ::= [0-9]+ ( c        -- *1
                      | b        -- *512
                      | k        -- *1024
                      | M        -- *1024*1024
                      | G        -- *1024*1024*1024
                      | T )?     -- *1024*1024*1024*1024

<strprop>  ::= fstype | group | name | path | target | user

<strop>    ::= ==                -- string equality
             | ===               -- case insensitive string equality
             | ~~                -- glob (fnmatch)
             | ~~~               -- case insensitive glob (fnmatch)
             | =~                -- POSIX Extended Regular Expressions
             | =~~               -- case insensitive POSIX Extended Regular Expressions

<str>      ::= " ([^"] | "")+ "  -- use "" for a single " inside "

<typetest> ::= type == ( b | c | d | p | f | l )

<modetest> ::= mode ( ==         -- exact permissions
                    | &          -- check if all bits of <octal> set
                    | |          -- check if any bit of <octal> set
                    ) <octal>

<octal> ::= [0-7]+
.Ed
.Sh EXIT STATUS
.Ex -std
.Sh SEE ALSO
.Xr du 1 ,
.Xr find 1 ,
.Xr ls 1 ,
.Xr stat 1
.Sh AUTHORS
.An Christian Neukirchen Aq Mt chneukirchen@gmail.com
.Sh LICENSE
.Nm
is licensed under the terms of the MIT license.