RHCSA Practice Exam with Complete Solutions Graded A+
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Course
RHCSA
Institution
RHCSA
RHCSA Practice Exam with Complete Solutions Graded A+
Gnome control center command - Answer-gnome-control-center
Linux Window Managers - Answer-sawfish, metacity, kwin, etc. Control windows like minimize, resize, full screen
Linux Display Manager - Answer-X Server. Server application which i...
$DISPLAY - Answer-Contains location of the display manager server, which is usually
the local machine. Contents: <hostname>:<# of display sequence for multiple machines
running the same server>.<#of the screen>
Configure the RPM update util. for the first time - Answer-up2date-config
Check if RPMs are up to date - Answer-up2date
Cmd to examine file system - Answer-fsck
*can't be used on mounted disks
Cmd to alter partitions, etc - Answer-fdisk
parted
Cmd to create a rescue/boot/recovery device - Answer-mkbootdisk --device /dev/sdb
2.4.18
last number is kernel version
Check kernel version - Answer-ls /lib/modules
Cmd to make sure memory buffer states are actually written to disk - Answer-sync
Add a user account and default group - Answer-useradd -g <group> <user>
Add an additional group to a user account - Answer-usermod -G <group> <user>
Open webmin - Answer-http://<host machine>:10000
Lock a user account - Answer-usermod -L <user>
,Location of stock user home directory files used for new user accounts - Answer-
/etc/skel
bash initialization files - Answer-/etc/profile => sets env var's system wide
/etc/bashrc => system wide definitions
~/.bash_profile => individual preferred config
~/.bash_login => indiv. login settings
~/.profile => next up for indiv. config
~/.bashrc => common for non-login shells
~/.bash_logout => indiv. logout settings
See a <DIR> Tree - Answer-<DIR> tree
Linux command
vi undo command - Answer-U (upper case)
command to go up two DIR levels - Answer-../../
cmd to see open processes - Answer-ps -aux
or jobs
cmd to see ntp peer status - Answer-ntpq -p
p = print list of peers w/summary of their state
cmd to set time and date from ntp service - Answer-ntpdate
ssh command to avoid host key conflicts during connection - Answer-ssh -o -X
StrictHostKeyChecking=no <host>
cmd to open VMM GUI - Answer-virt-manager
operator for "right here, in pwd" - Answer-"."
cmd to display active user and group IDs - Answer-id
search with an index file - Answer-locate <file>
pause a process - Answer-ctrl + z
cmd to see what's running in the background - Answer-jobs
bring process to foreground - Answer-fg <pid>
show current environment variables and configuration - Answer-env
, show environment variables being used - Answer-set
what ver Linux are you on - Answer-cat /etc/*release
what kind of processor - Answer-cat /proc/cpuinfo
lscpu
what's the memory status - Answer-free -h
for human readable
print system information - Answer-uname -a
hostnamectl
dmesg in pretty version - Answer-dmesg -H
H=human readable
cmds similar to forward and back window navigation - Answer-pushd
popd
update the locate index - Answer-updatedb
search for a term recursively inside files and report line numbers w/grep - Answer-grep -
rn /etc/ -e <term>
r=recursive
e=find a pattern (examine)
n=prefix each hit w/line number
info on common commands not in man - Answer-help <term>
search through the man pages - Answer-apropos
show file/dir sizes in MB summary - Answer-du -hsMB
h - human readable
s - summarize
show processes in a branch format - Answer-pstree -pa
p=show pids
a=show cmd line arguments
create physical volume on a disk - Answer-pvcreate
create volume group on a physical volume - Answer-lvcreate -L <size> <volgroup> -n
<logVOLname>
L=logical
n=name
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