explain_putenv_or_die(3) - Linux man page
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 © 2010 Peter Miller