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pwd.h - Man Page

password structure


This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.


#include <pwd.h>


The <pwd.h> header shall define the struct passwd, structure, which shall include at least the following members:

char    *pw_name   User's login name.
uid_t    pw_uid    Numerical user ID.
gid_t    pw_gid    Numerical group ID.
char    *pw_dir    Initial working directory.
char    *pw_shell  Program to use as shell.

The <pwd.h> header shall define the gid_t, uid_t, and size_t types as described in <sys/types.h>.

The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.

void           endpwent(void);
struct passwd *getpwent(void);
struct passwd *getpwnam(const char *);
int            getpwnam_r(const char *, struct passwd *, char *,
                   size_t, struct passwd **);
struct passwd *getpwuid(uid_t);
int            getpwuid_r(uid_t, struct passwd *, char *,
                   size_t, struct passwd **);
void           setpwent(void);

The following sections are informative.

Application Usage




Future Directions


See Also


The System Interfaces volume of POSIX.1-2017, endpwent(), getpwnam(), getpwuid()

Referenced By

endpwent(3p), getpwnam(3p), getpwuid(3p).

2017 IEEE/The Open Group POSIX Programmer's Manual