test(1) [v7 man page]

TEST(1) 						      General Commands Manual							   TEST(1)

NAME

       test -  condition command

SYNOPSIS

       test expr

DESCRIPTION

       test  evaluates the expression expr, and if its value is true then returns zero exit status; otherwise, a non zero exit status is returned.
       test returns a non zero exit if there are no arguments.

       The following primitives are used to construct expr.

       -r file	true if the file exists and is readable.

       -w file	true if the file exists and is writable.

       -f file	true if the file exists and is not a directory.

       -d file	true if the file exists and is a directory.

       -s file	true if the file exists and has a size greater than zero.

       -t [ fildes ]
		true if the open file whose file descriptor number is fildes (1 by default) is associated with a terminal device.

       -z s1	true if the length of string s1 is zero.

       -n s1	true if the length of the string s1 is nonzero.

       s1 = s2	true if the strings s1 and s2 are equal.

       s1 != s2 true if the strings s1 and s2 are not equal.

       s1	true if s1 is not the null string.

       n1 -eq n2
		true if the integers n1 and n2 are algebraically equal.  Any of the comparisons -ne, -gt, -ge, -lt, or -le may be used in place of
		-eq.

       These primaries may be combined with the following operators:

       !      unary negation operator

       -a     binary and operator

       -o     binary or operator

       ( expr )
	      parentheses for grouping.

       -a  has	higher	precedence than -o.  Notice that all the operators and flags are separate arguments to test.  Notice also that parentheses
       are meaningful to the Shell and must be escaped.

SEE ALSO

       sh(1), find(1)

																	   TEST(1)

test(1) 						      General Commands Manual							   test(1)

Name
       test - test conditional expression

Syntax
       test expr
       [ expr ]

Description
       The  command  evaluates the expression expr.  If the value of expr is true, the command returns a zero exit status; otherwise, it returns a
       nonzero exit status.  The command also returns a nonzero exit status if no arguments are specified.

Options
       The following primitives are used to construct expr:

       -r file		   Tests if the file exists and is readable.

       -w file		   Tests if the file exists and is writable.

       -f file		   Tests if the file exists and is not a directory.

       -d file		   Tests if the file exists and is a directory.

       -s file		   Tests if the file exists and has a size greater than zero.

       -t [ fildes ]	   Tests if the open file, whose file descriptor number is fildes (1 by default), is associated with a terminal device.

       -z s1		   Tests if the length of string s1 is zero.

       -n s1		   Tests if the length of the string s1 is nonzero.

       s1 = s2		   Tests if the strings s1 and s2 are equal.

       s1 != s2 	   Tests if the strings s1 and s2 are not equal.

       s1		   Tests if s1 is not the null string.

       n1 -eq n2	   Tests if number1 equals number2.

       n1 -ge n2	   Tests if number1 is greater than or equal to number2.

       n1 -gt n2	   Tests if number1 is greater than number2.

       n1 -le n2	   Tests if number1 is less than or equal to number2.

       n1 -lt n2	   Tests if number1 is less than number2.

       n1 -ne n2	   Tests if number1 is not equal to number2.

       These primitives can be combined with the following operators:

       !expr		   Negates evaluation of expression.

       expr -a expr	   Tests logical and of two expressions.

       expr -o expr	   Tests logical or of two expressions.

       ( expr... )	   Groups expressions.

       The -a operator takes precedence over the -o operator.  Note that all the operators and flags are separate  arguments  to  Note	also  that
       parentheses are meaningful to the Shell and must be escaped.

See Also
       find(1), sh(1), test(1sh5)

																	   test(1)