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Top Forums UNIX for Dummies Questions & Answers How to find All Primary and Secondary Group ID's for a user Post 18313 by killerserv on Wednesday 27th of March 2002 12:51:57 AM
Old 03-27-2002
Have you try the id command ?

id [-gnruG] [--group] [--name] [--real] [--user] [--groups] [--help] [--version] [username]

By default, it prints the real user ID, real group ID, effective user ID if different from the real user ID, effective group ID if dif ferent from the real group ID, and supplemental group IDs. It prints each of these values preceded by a string identifying it and followed by the corresponding user or group name in parentheses. Post back if this doesnt help..
 

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cd_pvd(3)						     Library Functions Manual							 cd_pvd(3)

NAME
cd_pvd, cd_cpvd - Reads the Primary Volume Descriptor from a CD-ROM LIBRARY
Rock Ridge and X/Open Extensions to the CDFS library (libcdrom.so, libcdrom.a) SYNOPSIS
#include <sys/cdrom.h> int cd_pvd ( char *path, struct iso9660_pvd *pvd ); int cd_cpvd ( char *path, char *addr ); PARAMETERS
Points to a pathname that names a file or directory within a CD-ROM File System hierarchy, or to a block-special file for a CD-ROM File System. Points to the iso9660_pvd structure that holds the contents of the Primary Volume Descriptor from the CD-ROM. The iso9660_pvd structure is defined in cdfs/xcdr.h, an include file that is called into sys/cdrom.h Points to the address to which the Primary Volume Descriptor on the CD-ROM is copied. DESCRIPTION
The function cd_pvd fills the *pvd structure with the contents of the Primary Volume Descriptor from the CD-ROM. To execute this function successfully, the user must have read or execute permission for the file or directory pointed to by *path The function cd_cpvd copies the complete Primary Volume Descriptor that is recorded on the CD-ROM to the address pointed to by *addr. The user must allocate {CD_PVDLEN} bytes for the Primary Volume Descriptor. The variable {CD_PVDLEN} is defined in cdfs/xcdr.h, an include file that is called into sys/cdrom.h. RETURN VALUES
If successful, the value zero is returned. If unsuccessful, the integer -1 is returned and errno is set to indicate the error. ERRORS
The function will fail if: Search permission is denied for a directory in *path or read permission is denied for the file, directory, or block special file pointed to by *path. The address of *path or *pvd is invalid. A signal was caught during execution of the function. The argument *path points to a file or directory that is not within the CD-ROM file hierarchy. The named file is a block special file and the CD-ROM is not recorded according to the ISO 9660 standard. {OPEN_MAX} file descriptors are currently open in the calling process. [Tru64 UNIX] Either the OPEN_MAX value or the per-process soft descriptor limit is checked. The length of the *path string exceeds {PATH_MAX}, or a pathname component is longer than {NAME_MAX} while {_POSIX_NO_TRUNC} is in effect. The system file table is full. A component of *path does not exist, or the *path argument points to an empty string. A component of the *path prefix is not a directory. The CD-ROM is not in the drive, or a read error occurred. The named file is a block-special file and the device associated with the file does not exist. RELATED INFORMATION
Files: cdfs/xcdr.h, sys/cdrom.h. delim off cd_pvd(3)

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