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putpwent(3)

putpwent(3)Library Functions Manualputpwent(3)

putpwent - write a password file entry

Standard C library (libc, -lc)

#include <stdio.h>#include <sys/types.h>#include <pwd.h>
int putpwent(const struct passwd *restrict p, FILE *restrict stream);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

putpwent():


Since glibc 2.19:
_DEFAULT_SOURCE
glibc 2.19 and earlier:
_SVID_SOURCE

The putpwent() function writes a password entry from the structure p in the file associated with stream.

The passwd structure is defined in <pwd.h> as follows:


struct passwd {
char *pw_name; /* username */
char *pw_passwd; /* user password */
uid_t pw_uid; /* user ID */
gid_t pw_gid; /* group ID */
char *pw_gecos; /* real name */
char *pw_dir; /* home directory */
char *pw_shell; /* shell program */};

The putpwent() function returns 0 on success. On failure, it returns -1, and errno is set to indicate the error.

Invalid (NULL) argument given.

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue
putpwent ()Thread safetyMT-Safe locale

SVr4.

endpwent(3), fgetpwent(3), getpw(3), getpwent(3), getpwnam(3), getpwuid(3), setpwent(3)

2023-02-05Linux man-pages 6.03