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Annotation of 3BSD/cmd/net/filecat.c, revision 1.1

1.1     ! root        1: /*
        !             2: 
        !             3:        filecat
        !             4: 
        !             5:        does nothing more than copy standard input to standard
        !             6:        output, like the cat command, but reports write errors.
        !             7:        Takes no arguments.
        !             8:        Uses getc and putc rather than fwrite and fread because
        !             9:        the latter call getc and putc.
        !            10: 
        !            11:        Exit codes:
        !            12:                0       ok
        !            13:                1       error on read
        !            14:                2       error on write
        !            15: 
        !            16: */
        !            17: # include <stdio.h>
        !            18: main(){
        !            19:        char c,sOutbuf[BUFSIZ];
        !            20: 
        !            21:        setbuf(stdout,sOutbuf);
        !            22: 
        !            23:        while((c = getc(stdin)) != EOF){
        !            24:                putc(c,stdout);
        !            25:                if(ferror(stdout)){
        !            26:                        perror("filecat: stdout");
        !            27:                        exit(2);
        !            28:                }
        !            29:        }
        !            30:        if(ferror(stdin)){
        !            31:                perror("filecat: stdin");
        !            32:                exit(1);
        !            33:        }
        !            34:        fclose(stdin);
        !            35:        fclose(stdout);
        !            36:        exit(0);
        !            37: }

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