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--- howto:umask [2022/02/21 14:44]
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+++ howto:umask [2022/03/18 12:12] (current)
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 ======umask======
-The CHPC cluster uses CentOS as its operating system and follows the user private group convention for user accounts. This means that each user has a username (UID) and a corresponding group (GID).  This scheme allows for easier set up of shared directories on the various file systems (home or Lustre) that users have access to.
+The CHPC cluster uses [[quick:os|CentOS]] as its operating system and follows the user private group convention for user accounts. This means that each user has a username (UID) and a corresponding group (GID).  This scheme allows for easier set up of shared directories on the various file systems (home or Lustre) that users have access to.
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 The above is used to share a directory on the cluster amongst the members of a CHPC research programme, also known as a project.
-The PI for a project can apply for a shared group directory on ''/mnt/lustre/groups''
+The PI of a project can request a Linux group be created on the cluster for their programme, using the short name, also known as the project name.  This is the same project identifier used with job scripts to in
+The PI of a project can further apply for a shared group directory on ''/mnt/lustre/groups'', however, this requires special motivation as described in the [[chpc:accounts|CHPC User Policy]] document.  The setgid bit will then be set on that directory.

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