test(1F)                                                           test(1F)


   NAME
         test - condition evaluation command

   SYNOPSIS
         test expr
         [expr]

   DESCRIPTION
         test evaluates the expression expr and if its value is true, sets a
         zero (TRUE) exit status; otherwise, a non-zero (FALSE) exit status is
         set; test also sets a non-zero exit status if there are no arguments.
         When permissions are tested, the effective user ID of the process is
         used.

         All operators, flags, and brackets (brackets used as shown in the
         second SYNOPSIS line) must be separate arguments to test.  Normally
         these items are separated by spaces.

         The following primitives are used to construct expr:

         -r file   true if file exists and is readable.

         -w file   true if file exists and is writable.

         -x file   true if file exists and is executable.

         -f file   true if file exists and is a regular file.

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

         -c file   true if file exists and is a character special file.

         -b file   true if file exists and is a block special file.

         -p file   true if file exists and is a named pipe (fifo).

         -u file   true if file exists and its set-user-ID bit is set.

         -g file   true if file exists and its set-group-ID bit is set.

         -k file   true if file exists and its sticky bit is set.

         -s file   true if 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.




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   test(1F)                                                           test(1F)


         -n s1     true if the length of the string s1 is non-zero.

         s1 = s2   true if strings s1 and s2 are identical.

         s1 != s2  true if strings s1 and s2 are not identical.

         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, and -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 (-a has higher precedence than -o).

         `( expr )`  parentheses for grouping.  Notice also that parentheses
                     are meaningful to the shell and, therefore, must be
                     quoted.

   NOTES
         If you test a file you own (the -r, -w , or -x tests), but the
         permission tested does not have the owner bit set, a non-zero (false)
         exit status will be returned even though the file may have the group
         or other bit set for that permission.  The correct exit status will
         be set if you are super-user.

         The = and != operators have a higher precedence than the -r through
         -n operators, and = and != always expect arguments; therefore, = and
         != cannot be used with the -r through -n operators.

         If more than one argument follows the -r through -n operators, only
         the first argument is examined; the others are ignored, unless a -a
         or a -o is the second argument.

   SEE ALSO
         find(1), sh(1) in the User's Reference Manual.












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