explain_putenv_or_die (3)

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NAME

explain_putenv_or_die - change or add an environment variable and report errors

SYNOPSIS

#include <libexplain/putenv.h>

void explain_putenv_or_die(char *string);
int explain_putenv_on_error(char *string);

DESCRIPTION

The explain_putenv_or_die function is used to call the putenv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_putenv(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

The explain_putenv_on_error function is used to call the putenv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_putenv(3) function, but still returns to the caller.

string

The string, exactly as to be passed to the putenv(3) system call.

RETURN VALUE

The explain_putenv_or_die function only returns on success, see putenv(3) for more information. On failure, prints an explanation and exits, it does not return.

The explain_putenv_on_error function always returns the value return by the wrapped putenv(3) system call.

EXAMPLE

The explain_putenv_or_die function is intended to be used in a fashion similar to the following example:

explain_putenv_or_die(string);

SEE ALSO

putenv(3)

change or add an environment variable

explain_putenv(3)

explain putenv(3) errors

exit(2)

terminate the calling process

COPYRIGHT

libexplain version 0.52
Copyright (C) 2010 Peter Miller

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