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Annotation of researchv10dc/dist/man/v3/man1/if.1, revision 1.1

1.1     ! root        1: .pa 1
        !             2: .he 'IF (I)'3/15/72'IF (I)'
        !             3: .ti 0
        !             4: NAME           if --  conditional command
        !             5: .sp
        !             6: .ti 0
        !             7: SYNOPSIS       if__ expr command [ arg918 ... ]
        !             8: .sp
        !             9: .ti 0
        !            10: DESCRIPTION    if__
        !            11: evaluates the expression expr____, and if its value is true____,
        !            12: executes the given command_______ with the given arguments.
        !            13: 
        !            14: The following primitives are used to construct
        !            15: the expr____:
        !            16: 
        !            17: .in +9
        !            18: .ti -4
        !            19: -r__ file
        !            20: .br
        !            21: true if the file exists and is readable.
        !            22: 
        !            23: .ti -4
        !            24: -w__ file
        !            25: .br
        !            26: true if the file exists and is writable
        !            27: 
        !            28: .ti -4
        !            29: s1 =_ s2
        !            30: .br
        !            31: true if the strings s1__ and s2__ are equal.
        !            32: 
        !            33: .ti -4
        !            34: s1 !=__ s2
        !            35: .br
        !            36: true if the strings s1__ and s2__ are not equal.
        !            37: 
        !            38: .in -9
        !            39: These primaries may be combined with the
        !            40: following operators:
        !            41: 
        !            42: .in +5
        !            43: !_
        !            44: .ti +4
        !            45: unary negation operator
        !            46: 
        !            47: -a__
        !            48: .ti +4
        !            49: binary and___ operator
        !            50: 
        !            51: -o__
        !            52: .ti +4
        !            53: binary or__ operator
        !            54: 
        !            55: (_ expr )_
        !            56: .ti +4
        !            57: parentheses for grouping.
        !            58: 
        !            59: .in -5
        !            60: -a__ has higher precedence than -o__.
        !            61: Notice that all the operators and flags are separate
        !            62: arguments to if__ and hence must be surrounded by spaces.
        !            63: .sp
        !            64: .ti 0
        !            65: FILES          --
        !            66: .sp
        !            67: .ti 0
        !            68: SEE ALSO       sh(I)
        !            69: .sp
        !            70: .ti 0
        !            71: DIAGNOSTICS    "if error",
        !            72: if the expression has the wrong syntax;
        !            73: "command not found."
        !            74: .sp
        !            75: .ti 0
        !            76: BUGS           --

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