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Exam EX200 topic 1 question 84 discussion

Actual exam question from RedHat's EX200

Question #: 84
Topic #: 1

SIMULATION -
According the following requirements to create a local directory /common/admin.
This directory has admin group.
This directory has read, write and execute permissions for all admin group members.
Other groups and users don't have any permissions.
All the documents or directories created in the/common/admin are automatically inherit the admin group.

Show Suggested Answer

Suggested Answer: See explanation below.
mkdir -p /common/admin
chgrp admin /common/admin
chmod 2770 /common/admin

by STFN2019 at Sept. 24, 2021, 10:37 a.m.

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STFN2019

Highly Voted 3 years, 2 months ago

Full solution: mkdir -p /common/admin groupadd admin chown :admin -R /common chmod 775 -R /common chmod g+s -R /common touch testfile (to verify the latter requirement)

upvoted 5 times

sirasdf

2 years, 4 months ago

-R is not required. SGID will apply future group owner

upvoted 2 times

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Xtamata

3 years, 1 month ago

you forget that 'Other groups and users don't have permission". instead of chmod 775 /common, the correct command is chmod 770 /common.

upvoted 7 times

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PENNSHARK

Most Recent 10 months, 3 weeks ago

mkdir -p /common/admin groupadd admin chown :admin /common/admins chmod 770 /common/admins chmod g+s /common/admins

upvoted 1 times

ktd971

8 months, 4 weeks ago

770 mean that the Other groups and users don't have permission ?

upvoted 1 times

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sovafal192

2 years, 2 months ago

####* prepare, if not present mkdir -p /common/admin groupadd admin ####* owner group chown .admin /common/admin/ ####* remove not needed permissions chmod o-rwx /common/admin/ chmod u-rwx /common/admin/ ####* add group permissions and sticky bit chmod g+rwxs /common/admin/

upvoted 1 times

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kitkat

2 years, 5 months ago

groupadd admin mkdir -p /common/admin chgrp -R admin /common/admin setfacl -R -m u::---,g::---,g:admin:rwx /common/admin ---this makes sure other groups has no access setfacl -R -dm o::- /common/admin ---this makes sure others do not have access to folders chmod -R g+s /common/admin ---turn sticky bit on for the group

upvoted 1 times

kitkat

2 years, 5 months ago

upvoted 1 times

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14_aman

2 years, 6 months ago

I THINK IN THIS QUESTION APPLY FOR ACL FOR ADMIN GROUP # setfacl -m g:admin:rwx /common/admin change permission for other group and other user #chmod 700 /common/admin apply guid #chmod g+s /common/admin please reply

upvoted 1 times

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Mbuthia

2 years, 9 months ago

groupadd admin mkdir -p /common/admin chgrp -R admin /common/admin setfacl -R -m u::---,g::---,g:admin:rwX /common/admin chmod -R g+s /common/admin

upvoted 2 times

kitkat

2 years, 5 months ago

when you already used rwX when why do you need g+s in the next command? Didn't rwX already set the sticky bit for group above?

upvoted 1 times

kitkat

2 years, 5 months ago

i think capital X was and error which would make sense why g+s was used

upvoted 1 times

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cloudyhr

2 years, 11 months ago

#Create Directory mkdir -p /common/admin -p, --parents no error if existing, make parent directories as needed #Create Group groupadd admin #change group for /common/admin chown root:admin /common/admin or chgrp admin /common/admin #give group full permission and other no permissions chmod 770 /common/admin

upvoted 4 times

cloudyhr

2 years, 11 months ago

#finally setGUID chmod 2770/common/admin

upvoted 5 times

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