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Manual Pages  — STRDUP

NAME

strdup, strndup – save a copy of a string

CONTENTS

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <string.h>

char *
strdup(const char *str);

char *
strndup(const char *str, size_t len);

DESCRIPTION

The strdup() function allocates sufficient memory for a copy of the string str, does the copy, and returns a pointer to it. The pointer may subsequently be used as an argument to the function free(3).

If insufficient memory is available, NULL is returned and errno is set to ENOMEM.

The strndup() function copies at most len characters from the string str always NUL terminating the copied string.

SEE ALSO

free(3), malloc(3), wcsdup(3)

HISTORY

The strdup() function first appeared in BSD 4.4 . The strndup() function was added in FreeBSD 7.2 .

STRDUP (3) December 5, 2008

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Ken Thompson has an automobile which he helped design. Unlike most automobiles, it has neither speedometer, nor gas gauge, nor any of the other numerous idiot lights which plague the modern driver. Rather, if the driver makes a mistake, a giant “?” lights up in the center of the dashboard. “The experienced driver,” says Thompson, “will usually know what's wrong.”