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9. Process Credentials > Supplementary Group IDs

Supplementary Group IDs

The supplementary group IDs are a set of additional groups to which a process belongs. A new process inherits these IDs from its parent. A login shell obtains its supplementary group IDs from the system group file. As noted above, these IDs are used in conjunction with the effective and file-system IDs to determine permissions for accessing files, System V IPC objects, and other system resources.


  

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