TEST(1)                  DOMAIN/IX SYS5                   TEST(1)



NAME
     test - condition evaluation command

USAGE
     test expr
     [ expr ]

DESCRIPTION
     Test evaluates the expression expr and, if its value is
     true, returns a zero (true) exit status.  If the value is
     not true, or if no expr arguments are specified, a non-zero
     (false) exit status is returned.

EXPR STRUCTURE
     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.

     -l file   True if file exists and is a soft link.

     -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 it 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 ter-
               minal device.



Printed 12/4/86                                            TEST-1

TEST(1)                  DOMAIN/IX SYS5                   TEST(1)



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

     -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 primitives may be combined with the following opera-
     tors:

     !         Unary negation operator.

     -a        Binary and operator.

     -o        Binary or operator (-a has higher precedence than
               -o).

     ( expr )  Parentheses for grouping.

     Notice that all the operators and flags are separate argu-
     ments to test. Notice also that parentheses are meaningful
     to the Shell and, therefore, must be escaped.

CAUTIONS
     In the second form of the command, [ expr ], the square
     brackets must be delimited by blanks.  Although DOMAIN/IX
     recognizes this form of the command, others may not.

RELATED INFORMATION
     find(1), sh(1).















TEST-2                                            Printed 12/4/86