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RHCSA – Questions & Proper Solutions (Pass!)
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RHCSA – Questions & Proper Solutions (Pass!)
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RHCSA – Questions & Proper Solutions (Pass!)What two commands can be used to manage password properties Right
Ans - passwd
chage
What chmod option need to be used to add delete only files they own Right
Ans - o+t
What command is use to create symlinks between files Right Ans - ln
Command to create tar files Right Ans - tar
What command is used to create a log entry Right Ans - logger
What command is used to modify the timezone Right Ans - timedatectl
What two commands can be used to modify the network settings Right Ans
- nmcli
nmtui
What command modifies the hostname Right Ans - hostnamectl
If it asks to create a caonical hostname that means it wants you to add the
hostname to what Right Ans - /etc/hosts
How do you format the option on date to modify the format of the output
Right Ans - date +<format option>
Ex: date +%R
What command lets you see the type of file a file is Right Ans - file
How do you run a command again from history by its number entry in history
Right Ans - !<number>
Ex: !45
,How do you format the touch command to create multiple files with an array
of options. Explain both a list and a range. Right Ans - touch
folder{1,2}_file{1..5}
How do you cd back to a directory you were just in Right Ans - cd -
What option can you use to make a man page output to postscript Right
Ans - -t
Ex: man -t passwd > passwd.ps
What shortcut do you use to enter the visual mode of vim Right Ans - v
What file can be modified to set the default password policy settings for new
users Right Ans - /etc/login.defs
When making custom sudoers modifications where should you place these?
Right Ans - /etc/sudoers.d/<file>
What command will list the cpu details Right Ans - lscpu
How do you send a command to be a job Right Ans - Add a & at the end
What command do you use with top to save the current configuration as
default for the user Right Ans - W (capital)
Command to suspend, kill, etc a process Right Ans - pkill
Command you can use to filter though logs Right Ans - journalctl
Ex: journalctl --since "30 minutes ago" --until "now"
How do you make logger write to a particular facility and priority Right
Ans - logger -p <facility>.<.priority> "Log Message"
Ex: logger -p authpriv.alert "there is an alert"
Tip: -p option supports tab completion
, What command should you use to install a downloaded rpm file directly
Right Ans - dnf
Ex: dnf install <file name>.rpm
When using find to filter by size how would you specify below 100MB, but
above 50MB Right Ans - find / -size -100M -size +50M
The - and + can be used for size and other filter options
What is the command to update the locate database Right Ans - updatedb
Inside of a bash script how do you reference the item in a for loop Right
Ans - ${var}
What is the basic structure of a for loop in bash Right Ans - for i in array list
do
done
What command can be used to create user deferred jobs
What command do you use to list the deferred jobs Right Ans - at
atq
Ex: echo "date >> /home/student/myjob.txt" | at now +3min
What directory can you make crontab use by dropping just a script file in and
the directories control timing Right Ans - /etc/cron.hourly
/etc/cron.daily
/etc/cron.weekly
/etc/cron.montly
What command is used to adjust performing profiles of the system Right
Ans - tuned-adm
What command do you use to initialize the swap partition after the swap
filesystem is on it Right Ans - mkswap
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