SEARCH
NEW RPMS
DIRECTORIES
ABOUT
FAQ
VARIOUS
BLOG
DONATE


YUM REPOSITORY

 
 

MAN page from OpenSuSE shadow-4.6-lp151.2.3.2.x86_64.rpm

SUBUID

Section: File Formats and Conversions (5)
Updated: 04/29/2018
Index 

NAME

subuid - the subordinate uid file 

DESCRIPTION

Each line in/etc/subuidcontains a user name and a range of subordinate user ids that user is allowed to use. This is specified with three fields delimited by colons (lq:rq). These fields are:

*login name or UID

*numerical subordinate user ID

*numerical subordinate user ID count

This file specifies the user IDs that ordinary users can use, with thenewuidmapcommand, to configure uid mapping in a user namespace.

Multiple ranges may be specified per user.

When large number of entries (10000-100000 or more) are defined in/etc/subuid, parsing performance penalty will become noticeable. In this case it is recommended to use UIDs instead of login names. Benchmarks have shown speed-ups up to 20x. 

FILES

/etc/subuid

Per user subordinate user IDs.

/etc/subuid-

Backup file for /etc/subuid.
 

SEE ALSO

login.defs(5),newgidmap(1),newuidmap(1),newusers(1),subgid(5),useradd(8),userdel(8),usermod(8),user_namespaces(7).


 

Index

NAME
DESCRIPTION
FILES
SEE ALSO

This document was created byman2html,using the manual pages.