1. Once you get added to a TACC allocation, you will belong to the group (gid) associated with that allocation.
2. A user can belong to multiple groups, but will have a default group.
3. In order to make a directory and its contents readable by a group, say, 801020, do the following:
| Code Block |
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chgrp -R 801020 directoryname chmod -R -g+rX directoryname |
4. In order to avoid doing this for every file you create, add the following to your profile: This will make sure files that you generate will automatically be group readable.
| Code Block |
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umask 002 |
You'll also need to change from your default group to the group the client belongs to.
newgrp -G-801020
5. Alternatively, you can set the group ID on a client's directory, and then set the setgid flag on the directory so that all subdirectories and files created in the directory from that time forward inherit the same group ID:
| Code Block |
|---|
chgrp 801020 directoryname chmod g+s directoryname |
Finding The Group ID For An Allocation
A list of group IDs and users associated with the group is in the file /etc/group on Lonestar. Using grep with usernames should let you narrow down which group ID is associated with which allocation.