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Annotation of coherent/a/usr/man/COHERENT/if.c, revision 1.1

1.1     ! root        1: 
        !             2: 
        !             3: if                           Command                           if
        !             4: 
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        !             6: 
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        !             8: Conditional command execution
        !             9: 
        !            10: iiff _s_e_q_u_e_n_c_e_1
        !            11: tthheenn _s_e_q_u_e_n_c_e_2
        !            12: [eelliiff _s_e_q_u_e_n_c_e_3
        !            13: tthheenn _s_e_q_u_e_n_c_e_4] ...
        !            14: [eellssee _s_e_q_u_e_n_c_e_5]
        !            15: fi
        !            16: 
        !            17: The shell construct if executes commands conditionally, depending
        !            18: on the exit status of the execution of other commands.
        !            19: 
        !            20: First, if executes the commands in sequence1.  If the exit status
        !            21: is zero,  it executes the  commands in sequence2  and terminates.
        !            22: Otherwise, it  executes the optional sequence3  if given, and ex-
        !            23: ecutes sequence4  if the exit status is  zero.  It executes addi-
        !            24: tional elif clauses similarly.  If the exit status of each tested
        !            25: command sequence  is nonzero, it executes  the optional else part
        !            26: sequence5.
        !            27: 
        !            28: Because the shell recognizes a reserved word only as the unquoted
        !            29: first  word of  a command,  each  then, elif,  else, and  fi must
        !            30: either occur  unquoted at the start  of a line or  be preceded by
        !            31: `;'.
        !            32: 
        !            33: The shell executes if directly.
        !            34: 
        !            35: ***** Example *****
        !            36: 
        !            37: For an example of this command, see the entry for trap.
        !            38: 
        !            39: ***** See Also *****
        !            40: 
        !            41: commands, sh, test
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        !            64: COHERENT Lexicon                                           Page 1
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