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    The following form allows you to view linux man pages.

    Command:

    vwarnx

    
    
    
    

    SYNOPSIS

           #include <err.h>
    
           void err(int eval, const char *fmt, ...);
    
           void errx(int eval, const char *fmt, ...);
    
           void warn(const char *fmt, ...);
    
           void warnx(const char *fmt, ...);
    
           #include <stdarg.h>
    
           void verr(int eval, const char *fmt, va_list args);
    
           void verrx(int eval, const char *fmt, va_list args);
    
           void vwarn(const char *fmt, va_list args);
    
           void vwarnx(const char *fmt, va_list args);
    
    
    

    DESCRIPTION

           The err() and warn() family of functions display a formatted error mes-
           sage on the standard error output.  In all cases, the last component of
           the program name, a colon character, and a space are  output.   If  the
           fmt argument is not NULL, the printf(3)-like formatted error message is
           output.  The output is terminated by a newline character.
    
           The err(), verr(), warn(), and vwarn() functions append an  error  mes-
           sage obtained from strerror(3) based on the global variable errno, pre-
           ceded by another colon and space unless the fmt argument is NULL.
    
           The errx() and warnx() functions do not append an error message.
    
           The err(), verr(), errx(), and verrx() functions  do  not  return,  but
           exit with the value of the argument eval.
    
    
    

    CONFORMING TO

           These functions are nonstandard BSD extensions.
    
    
    

    EXAMPLE

           Display the current errno information string and exit:
    
               p = malloc(size);
               if (p == NULL)
                   err(1, NULL);
               fd = open(file_name, O_RDONLY, 0);
               if (fd == -1)
                   err(1, "%s", file_name);
    
           Display an error message and exit:
    
    
    

    SEE ALSO

           error(3), exit(3), perror(3), printf(3), strerror(3)
    
    
    

    Linux 2013-12-30 ERR(3)

    
    
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