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-.\"-
-.\" Copyright (c) 1991, 1993
-.\"	The Regents of the University of California.  All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" the Institute of Electrical and Electronics Engineers, Inc.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\" 3. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\"     @(#)test.1	8.1 (Berkeley) 5/31/93
-.\" $FreeBSD: releng/12.0/bin/test/test.1 314436 2017-02-28 23:42:47Z imp $
-.\"
-.Dd October 5, 2016
-.Dt CATSH-TEST 1
-.Os
-.Sh NAME
-.Nm test ,
-.Nm \&[
-.Nd condition evaluation utility
-.Sh SYNOPSIS
-.Nm
-.Ar expression
-.Nm \&[
-.Ar expression Cm \&]
-.Sh DESCRIPTION
-The
-.Nm
-utility evaluates the expression and, if it evaluates
-to true, returns a zero (true) exit status; otherwise
-it returns 1 (false).
-If there is no expression,
-.Nm
-also
-returns 1 (false).
-.Pp
-All operators and flags are separate arguments to the
-.Nm
-utility.
-.Pp
-The following primaries are used to construct expression:
-.Bl -tag -width Ar
-.It Fl b Ar file
-True if
-.Ar file
-exists and is a block special
-file.
-.It Fl c Ar file
-True if
-.Ar file
-exists and is a character
-special file.
-.It Fl d Ar file
-True if
-.Ar file
-exists and is a directory.
-.It Fl e Ar file
-True if
-.Ar file
-exists (regardless of type).
-.It Fl f Ar file
-True if
-.Ar file
-exists and is a regular file.
-.It Fl g Ar file
-True if
-.Ar file
-exists and its set group ID flag
-is set.
-.It Fl h Ar file
-True if
-.Ar file
-exists and is a symbolic link.
-This operator is retained for compatibility with previous versions of
-this program.
-Do not rely on its existence; use
-.Fl L
-instead.
-.It Fl k Ar file
-True if
-.Ar file
-exists and its sticky bit is set.
-.It Fl n Ar string
-True if the length of
-.Ar string
-is nonzero.
-.It Fl p Ar file
-True if
-.Ar file
-is a named pipe
-.Pq Tn FIFO .
-.It Fl r Ar file
-True if
-.Ar file
-exists and is readable.
-.It Fl s Ar file
-True if
-.Ar file
-exists and has a size greater
-than zero.
-.It Fl t Ar file_descriptor
-True if the file whose file descriptor number
-is
-.Ar file_descriptor
-is open and is associated with a terminal.
-.It Fl u Ar file
-True if
-.Ar file
-exists and its set user ID flag
-is set.
-.It Fl w Ar file
-True if
-.Ar file
-exists and is writable.
-True
-indicates only that the write flag is on.
-The file is not writable on a read-only file
-system even if this test indicates true.
-.It Fl x Ar file
-True if
-.Ar file
-exists and is executable.
-True
-indicates only that the execute flag is on.
-If
-.Ar file
-is a directory, true indicates that
-.Ar file
-can be searched.
-.It Fl z Ar string
-True if the length of
-.Ar string
-is zero.
-.It Fl L Ar file
-True if
-.Ar file
-exists and is a symbolic link.
-.It Fl O Ar file
-True if
-.Ar file
-exists and its owner matches the effective user id of this process.
-.It Fl G Ar file
-True if
-.Ar file
-exists and its group matches the effective group id of this process.
-.It Fl S Ar file
-True if
-.Ar file
-exists and is a socket.
-.It Ar file1 Fl nt Ar file2
-True if
-.Ar file1
-exists and is newer than
-.Ar file2 .
-.It Ar file1 Fl ot Ar file2
-True if
-.Ar file1
-exists and is older than
-.Ar file2 .
-.It Ar file1 Fl ef Ar file2
-True if
-.Ar file1
-and
-.Ar file2
-exist and refer to the same file.
-.It Ar string
-True if
-.Ar string
-is not the null
-string.
-.It Ar s1 Cm = Ar s2
-True if the strings
-.Ar s1
-and
-.Ar s2
-are identical.
-.It Ar s1 Cm != Ar s2
-True if the strings
-.Ar s1
-and
-.Ar s2
-are not identical.
-.It Ar s1 Cm < Ar s2
-True if string
-.Ar s1
-comes before
-.Ar s2
-based on the binary value of their characters.
-.It Ar s1 Cm > Ar s2
-True if string
-.Ar s1
-comes after
-.Ar s2
-based on the binary value of their characters.
-.It Ar n1 Fl eq Ar n2
-True if the integers
-.Ar n1
-and
-.Ar n2
-are algebraically
-equal.
-.It Ar n1 Fl ne Ar n2
-True if the integers
-.Ar n1
-and
-.Ar n2
-are not
-algebraically equal.
-.It Ar n1 Fl gt Ar n2
-True if the integer
-.Ar n1
-is algebraically
-greater than the integer
-.Ar n2 .
-.It Ar n1 Fl ge Ar n2
-True if the integer
-.Ar n1
-is algebraically
-greater than or equal to the integer
-.Ar n2 .
-.It Ar n1 Fl lt Ar n2
-True if the integer
-.Ar n1
-is algebraically less
-than the integer
-.Ar n2 .
-.It Ar n1 Fl le Ar n2
-True if the integer
-.Ar n1
-is algebraically less
-than or equal to the integer
-.Ar n2 .
-.El
-.Pp
-If
-.Ar file
-is a symbolic link,
-.Nm
-will fully dereference it and then evaluate the expression
-against the file referenced, except for the
-.Fl h
-and
-.Fl L
-primaries.
-.Pp
-These primaries can be combined with the following operators:
-.Bl -tag -width Ar
-.It Cm \&! Ar expression
-True if
-.Ar expression
-is false.
-.It Ar expression1 Fl a Ar expression2
-True if both
-.Ar expression1
-and
-.Ar expression2
-are true.
-.It Ar expression1 Fl o Ar expression2
-True if either
-.Ar expression1
-or
-.Ar expression2
-are true.
-.It Cm \&( Ar expression Cm \&)
-True if expression is true.
-.El
-.Pp
-The
-.Fl a
-operator has higher precedence than the
-.Fl o
-operator.
-.Pp
-Some shells may provide a builtin
-.Nm
-command which is similar or identical to this utility.
-Consult the
-.Xr builtin 1
-manual page.
-.Sh GRAMMAR AMBIGUITY
-The
-.Nm
-grammar is inherently ambiguous.
-In order to assure a degree of consistency,
-the cases described in the
-.St -p1003.2 ,
-section D11.2/4.62.4, standard
-are evaluated consistently according to the rules specified in the
-standards document.
-All other cases are subject to the ambiguity in the
-command semantics.
-.Pp
-In particular, only expressions containing
-.Fl a ,
-.Fl o ,
-.Cm \&(
-or
-.Cm \&)
-can be ambiguous.
-.Sh EXIT STATUS
-The
-.Nm
-utility exits with one of the following values:
-.Bl -tag -width indent
-.It 0
-expression evaluated to true.
-.It 1
-expression evaluated to false or expression was
-missing.
-.It >1
-An error occurred.
-.El
-.Sh EXAMPLES
-Implement
-.Li test FILE1 -nt FILE2
-using only
-.Tn POSIX
-functionality:
-.Pp
-.Dl test -n \&"$(find -L -- FILE1 -prune -newer FILE2 2>/dev/null)\&"
-.Pp
-This can be modified using non-standard
-.Xr find 1
-primaries like
-.Cm -newerca
-to compare other timestamps.
-.Sh COMPATIBILITY
-For compatibility with some other implementations,
-the
-.Cm =
-primary can be substituted with
-.Cm ==
-with the same meaning.
-.Sh SEE ALSO
-.Xr builtin 1 ,
-.Xr expr 1 ,
-.Xr find 1 ,
-.Xr sh 1 ,
-.Xr stat 1 ,
-.Xr symlink 7
-.Sh STANDARDS
-The
-.Nm
-utility implements a superset of the
-.St -p1003.2
-specification.
-The primaries
-.Cm < ,
-.Cm == ,
-.Cm > ,
-.Fl ef ,
-.Fl nt ,
-.Fl ot ,
-.Fl G ,
-and
-.Fl O
-are extensions.
-.Sh HISTORY
-A
-.Nm
-utility appeared in
-.At v7 .
-.Sh BUGS
-Both sides are always evaluated in
-.Fl a
-and
-.Fl o .
-For instance, the writable status of
-.Pa file
-will be tested by the following command even though the former expression
-indicated false, which results in a gratuitous access to the file system:
-.Dl "[ -z abc -a -w file ]"
-To avoid this, write
-.Dl "[ -z abc ] && [ -w file ]"