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Annotation of coherent/a/usr/man/COHERENT/test, revision 1.1

1.1     ! root        1: 
        !             2: 
        !             3: test                         Command                         test
        !             4: 
        !             5: 
        !             6: 
        !             7: 
        !             8: Evaluate conditional expression
        !             9: 
        !            10: tteesstt _e_x_p_r_e_s_s_i_o_n ...
        !            11: 
        !            12: tteesstt   evaluates  an   _e_x_p_r_e_s_s_i_o_n,  which   consists   of  string
        !            13: comparisons, numerical comparisons, and tests of file attributes.
        !            14: For example, a tteesstt command  might be used within a shell command
        !            15: file to test whether a  certain file exists and is readable.  The
        !            16: logical result  (true or false) of the  _e_x_p_r_e_s_s_i_o_n is returned by
        !            17: the command, for use by a shell construct such as iiff.
        !            18: 
        !            19: _e_x_p_r_e_s_s_i_o_n is constructed  from the following elements, which are
        !            20: true if the given condition holds and false if not:
        !            21: 
        !            22: _e_x_p_1 -aa _e_x_p_2
        !            23:           Both expressions _e_x_p_1 and _e_x_p_2 are true.
        !            24: 
        !            25: -bb _f_i_l_e   _f_i_l_e is a block-special device.  kksshh only.
        !            26: 
        !            27: -cc _f_i_l_e   _f_i_l_e is a character-special file.  kksshh only.
        !            28: 
        !            29: -dd _f_i_l_e   _f_i_l_e exists and is a directory.
        !            30: 
        !            31: _f_i_l_e_1 -eeff _f_i_l_e_2
        !            32:           _f_i_l_e_1 is the same file as _f_i_l_e_2. kksshh only.
        !            33: 
        !            34: _n_1 -eeqq _n_2 Numbers _n_1 and _n_2 are equal.
        !            35: 
        !            36: -ff _f_i_l_e   _f_i_l_e exists and is not a directory.
        !            37: 
        !            38: -gg _f_i_l_e   File mode has sseettggiidd bit.  kksshh only.
        !            39: 
        !            40: _n_1 -ggee _n_2 Number _n_1 is greater than or equal to _n_2.
        !            41: 
        !            42: _n_1 -ggtt _n_2 Number _n_1 is greater than _n_2.
        !            43: 
        !            44: -kk _f_i_l_e   File mode has sticky bit.  kksshh only.
        !            45: 
        !            46: -LL _f_i_l_e   File is a symbolic link.  kksshh only.
        !            47: 
        !            48: _n_1 -llee _n_2 Number _n_1 is less than or equal to _n_2.
        !            49: 
        !            50: _n_1 -lltt _n_2 Number _n_1 is less than _n_2.
        !            51: 
        !            52: -nn _s_t_r_i_n_g _s_t_r_i_n_g has nonzero length.
        !            53: 
        !            54: _n_1 -nnee _n_2 Numbers _n_1 and _n_2 are not equal.
        !            55: 
        !            56: _f_i_l_e_1 -nntt _f_i_l_e_2
        !            57:           _f_i_l_e_1 is newer than kksshh only.
        !            58: 
        !            59: _e_x_p_1 -oo _e_x_p_2
        !            60:           Either expression _e_x_p_1 or _e_x_p_2 is true.  -aa has greater
        !            61:           precedence than -oo.
        !            62: 
        !            63: 
        !            64: COHERENT Lexicon                                           Page 1
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        !            67: 
        !            68: 
        !            69: test                         Command                         test
        !            70: 
        !            71: 
        !            72: 
        !            73: 
        !            74: _f_i_l_e_1 -oott _f_i_l_e_2
        !            75:           _f_i_l_e_1 is older than _f_i_l_e_2. kksshh only.
        !            76: 
        !            77: -pp _f_i_l_e   _f_i_l_e is a named pipe.  kksshh only.
        !            78: 
        !            79: -rr _f_i_l_e   _f_i_l_e exists and is readable.
        !            80: 
        !            81: -ss _f_i_l_e   _f_i_l_e exists and has nonzero size.
        !            82: 
        !            83: -tt [_f_d]   _f_d is  the file  descriptor number  of a file  which is
        !            84:           open and a terminal.  If no _f_d is given, it defaults to
        !            85:           the standard output (file descriptor 1).
        !            86: 
        !            87: -uu _f_i_l_e   File mode has sseettuuiidd set.  kksshh only.
        !            88: 
        !            89: -ww _f_i_l_e   _f_i_l_e exists and is writable.
        !            90: 
        !            91: -xx _f_i_l_e   _f_i_l_e exists and executable.  kksshh only.
        !            92: 
        !            93: -zz _s_t_r_i_n_g _s_t_r_i_n_g has zero length (is a null string).
        !            94: 
        !            95: _s_t_r_i_n_g    _s_t_r_i_n_g has nonzero length.
        !            96: 
        !            97: _s_t_r_i_n_g_1 = _s_t_r_i_n_g_2
        !            98:           _s_t_r_i_n_g_1 is equal to _s_t_r_i_n_g_2.
        !            99: 
        !           100: ! _e_x_p     Negates the logical value of expression _e_x_p.
        !           101: 
        !           102: _s_t_r_i_n_g_1 != _s_t_r_i_n_g_2
        !           103:           _s_t_r_i_n_g_1 is not equal to _s_t_r_i_n_g_2.
        !           104: 
        !           105: (_e_x_p)     Parentheses allow expression grouping.
        !           106: 
        !           107: ***** Example *****
        !           108: 
        !           109: The following example  uses the tteesstt command to determine whether
        !           110: a file is writable.
        !           111: 
        !           112: 
        !           113: if test ! -w /dev/lp
        !           114: then
        !           115:         echo The line printer is inaccessible.
        !           116: fi
        !           117: 
        !           118: 
        !           119: Under COHERENT, the command `['  is linked to tteesstt. If invoked as
        !           120: `[', tteesstt  checks that its last argument is  `]'.  This allows an
        !           121: alternative syntax: simply enclose _e_x_p_r_e_s_s_i_o_n in square brackets.
        !           122: For example, the above example can be written as follows:
        !           123: 
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        !           129: 
        !           130: COHERENT Lexicon                                           Page 2
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        !           134: 
        !           135: test                         Command                         test
        !           136: 
        !           137: 
        !           138: 
        !           139: if [ ! -w /dev/lp ]
        !           140: then
        !           141:         echo The line printer is inaccessible.
        !           142: fi
        !           143: 
        !           144: 
        !           145: For a more extended example of the square-bracket syntax, see sshh.
        !           146: 
        !           147: ***** See Also *****
        !           148: 
        !           149: ccoommmmaannddss, eexxpprr, ffiinndd, iiff, kksshh, sshh, wwhhiillee
        !           150: 
        !           151: ***** Notes *****
        !           152: 
        !           153: The Korn shell's version of  this command is based on the public-
        !           154: domain version written by Erik Baalbergen and Arnold Robbins.
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        !           196: COHERENT Lexicon                                           Page 3
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