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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 re-
       turns 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)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO

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