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RHCSA – Questions With Complete A+ Solutions
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RHCSA – Questions With Complete A+ Solutions
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RHCSA – Questions With Complete A+ SolutionsHow to add into sudoers user
How to setup sudo for a user Right Ans - echo /etc/sudoers.d/user01 >>
user01 ALL=(ALL) ALL
you can do like this....OR
in the file user20 ALL=(ALL) NOPASSWD:ALL
usermod -aG wheel user
visudo --> %wheel ALL=(ALL) ALL
How to add the sudoers group and give access Right Ans - To enable sudo
access to the group named gourp01
echo /etc/sudoers.d/group01 >> %group01 ALL=(ALL) AL
Configuring password ageing Right Ans - chage command will do this:
m=maximum, W warning, I inactivity
1- force user to change the password on the next login
2- display the information about user
3- expire account on 2-2-2020
4-command to expire the account and lock the command in same command.
5- asign no login shell
6- change the password policy for the consultant account to require a new
pass every 15 days
7-Set the passwords to expire 180 days from the current date for all users. Use
administrative rights to edit the configuration file.
8- The chown command can also be used to change group ownership of a file
by preceding the group name with a colon (:). For example, the following
command changes the group test_dir to admins:
9-The chown command can also be used to change both owner and group at
the same time
10- how to unlock the user Right Ans - 1- chage -d 0 user01
2- chage -l user01
3- i- # date -d "+45 days" +%F
ii # chage -E 2020-10-01 user01
4- chage -L -e 2019-0-05 user01
5- usermod -s /sbin/nologin user01
6- chage -M 15 consultant
,7-Set PASS_MAX_DAYS to 180in/etc/login.defs. Use administrative rights
when opening the file with the text editor. You can use the sudo vim
/etc/login.defs command to perform this step.
8-chown :admins test_dir
9-chown visitor:guests test_dir
#chown owner.group filename
10- usermod -U <username>
1- how to zip a directory
2- how to tar the folder
3- how to uncompress .tar file
4-by bzip2 compress the file anme testfile
5-unzip bzip2 file Right Ans - 1- tar -zcvf archive.tar.gz /folder
2- tar -cvf archive.tar.gz /foler
3- tar -xvf archine.tar.gz
4- bzip2 testfile
5- bzip2 -d
virtual machine activity :
1- how to list the vm
2- stop start the vm
3- check the information about the vm, storage and other information.
Right Ans - 1- virsh list --all
2-virsh start centos7.0
3- virsh edit centos7.0
on client command to mount nfs Right Ans - mount -t nfs
<ipaddressofthenfs.server>:/nfs /mnt/nfs
on client command to mount smb Right Ans - mount -t cifs //ip/share
/mnt/smb -o username=xyz,password=bvr
find grub to boot in a different kernel Right Ans - grubby --info=ALL
set grubby to index 5 Right Ans - grubby --set-default-index=5
verify the boot grubby Right Ans - grubby --default-index
, logical volume create command Right Ans - lvcreate -n <name> -L 3G
<name vgroup>
volume group command Right Ans - vgcreate <>vgname> /dev/sdc
/dev/sdb
extend the partition Right Ans - lvextend -L +200M /dev/RHCSA/pinehead
show link statistics
how to check the routes
trace path Right Ans - ip -s link show ens3
ip route /ip -6 route
tracepath access.redhat.com
Troubleshooting ports Right Ans - ss -ta
ss -la
add ip nmcli Right Ans - sudo nmcli con add con-name "static-addr" ifname
enX \
type ethernet ipv4.method manual \
ipv4.address 172.25.250.10/24 ipv4.gateway 172.25.250.254
modify the ip address Right Ans - nmcli
make partion and mount it under /mnt/data Right Ans - 1- lsblk --fs
/dev/vdb
2- parted /dev/vdb print
3- parted /dev/vdb mklabel msdos ----> for GPT put GPT/MBR =msdos
4-parted /dev/vdb mkpart primary xfs 2048s 1001MB
5-udevadm settle
6- lsblk --fs /dev/vdb ------ blkid
7- echo "UUID=e3db1abe-6d96-4faa-a213-b96a6f85dcc1 /archive xfs defaults
0 0" >>/etc/fstab
8- mount -a
9- sdsystemctl reboot
enteries of swap space in /etc/fstab Right Ans - UUID=af30cbb0-3866-
466a-825a-58889a49ef33 swap swap defaults 0 0
UUID=39e2667a-9458-42fe-9665-c5c854605881 swap swap pri=4 0 0
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