STraTOS 1997 April & May/STraTOS 1 - 1997 April & May.iso/CD01/GNU_KIT/DISK6.ZIP/gnu/man/cat1/test.1

Text File | 1994-01-19 | 5.2 KB | 133 lines

TEST(1L) TEST(1L)
NAME
     test - check file types and compare values
SYNOPSIS
     test [expr]
DESCRIPTION
     This manual page documents the GNU version of test.
     test returns a status of 0 (true) or 1 (false) depending on
                                                  ____               the evaluation of the conditional expression expr. Expres-
     sions may be unary or binary.  Unary expressions are often
     used to examine the status of a file.  There are string
     operators and numeric comparison operators as well.
        ____      -b file
                  ____                                        True if file exists and is block special.
        ____      -c file
                  ____                                            True if file exists and is character special.
        ____      -d file
                  ____                                      True if file exists and is a directory.
        ____      -e file
                  ____                  True if file exists
        ____      -f file
                  ____                                         True if file exists and is a regular file.
        ____      -g file
                  ____                                       True if file exists and is set-group-id.
        ____      -k file
                  ____                                       True if file has its ``sticky'' bit set.
        ____      -L file
                  ____                                          True if file exists and is a symbolic link.
        ____      -p file
                  ____                                       True if file exists and is a named pipe.
        ____      -r file
                  ____                                   True if file exists and is readable.
        ____      -s file
                  ____                                                    True if file exists and has a size greater than zero.
        ____      -S file
                  ____                                   True if file exists and is a socket.
         __       -t [fd]
                  __                              __                       True if fd is opened on a terminal.  If fd is omitted,
          it defaults to 1 (standard output).
        ____      -u file
                  ____                                                  True if file exists and its set-user-id bit is set.
        ____      -w file
                  ____                                   True if file exists and is writable.
        ____      -x file
                  ____                                     True if file exists and is executable.
        ____      -O file
                  ____                                                     True if file exists and is owned by the effective user
          id.
        ____      -G file
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TEST(1L) TEST(1L)
                  ____                                                      True if file exists and is owned by the effective group
          id.
     _____     _____      file1 -nt file2












                  _____                                                     True if file1 is newer (according to modification date)
               _____            than file2.
     _____     _____      file1 -ot file2
                  _____                                True if file1 is older than file2.
     _____     ____      file1 -ef file
                  _____     _____                                          True if file1 and file2 have the same device and inode
          numbers.
        ______      -z string
                                ______                    True if the length of string is zero.
        ______      -n string
     ______      string
                                ______                        True if the length of string is non-zero.
     _______   _______      string1 = string2
          True if the strings are equal.
     _______    _______      string1 != string2
          True if the strings are not equal.
        ____      !  expr
                  ____                     True if expr is false.
     _____    _____      expr1 -a expr2
                       _____     _____                     True if both expr1 and expr2 are true.
     _____    _____      expr1 -o expr2
                         _____    _____                    True if either expr1 or expr2 is true.
     ____    ____      arg1 OP arg2
          OP is one of -eq, -ne, -lt, -le, -gt, or -ge. These
                                                     ____              arithmetic binary operators return true if arg1 is
          equal, not-equal, less-than, less-than-or-equal,
                                                      ____            greater-than, or greater-than-or-equal than arg2,
                         ____     ____                                     respectively.  arg1 and arg2 may be positive integers,
                                                          ______            negative integers, or the special expression -l string,
                                           ______            which evaluates to the length of string.
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