Exam (elaborations)
RHCSA – Questions & Detailed Results (Rated A+)
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RHCSA – Questions & Detailed Results (Rated A+)
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RHCSA – Questions & Detailed Results (Rated A+)To type more than one command on a single line use what? Right Ans - the
semicolon `;`
Which command displays the type of a file? Right Ans - file command
What key combination can you use to insert the last word of the previous
command at the cursor's current location? Right Ans - Alt + .
Hold down Alt and press . to cycle earlier commands
Conditional command execution with && Right Ans - If the First command
executes SUCCESSFULLY then execute the Second command.
Conditional command execution with || Right Ans - If the First command
FAILS to execute then execute the Second command.
Which directory contains installed software programs and libraries? Right
Ans - /usr
Universal system resources
Which directory contains non-persistent process runtime data? Right Ans
- /run
Which directory contains regular commands and utilities? Right Ans -
/usr/bin
Which command returns you to the previous working directory? Right Ans
- cd -
How to create a variable and assign a value to it? Right Ans -
Command substitution Right Ans - method to execute a sub-command
within a larger command $(cmd) or `cmd`
Common section of the Linux Manual Right Ans - 1 - User commands
5 - For config files
8 - Sysadmin commands
, Which output redirection operator sends output and errors to the same file
and preserves the file content if it exists? Right Ans - >> file 2>&1
How you can list all shell variables that are currently set? Right Ans - with
the set command
How to temporarily change your primary group? Right Ans - use the
newgrp group_name
Your primary group will return in a new session.
How to implement a password aging policy? Right Ans - use the chage
command.
How to force a password change on the first login for the user? Right Ans -
chage -d 0 user_name
What command to use to modify file and directory permissions? Right Ans
- chmod Who/What/Which file|directory
Where is the system's default umask value is defined? Right Ans - in the
/etc/profile and /etc/bashrc files
Which state represents a process that released all of its resources except its
PID? Right Ans - Z (Zombie)
How to bring a background job to the foreground? Right Ans - use fg
%job_number
How to signal one or more processes that match selection criteria? Right
Ans - use pkill command
How to list user
logins and currently running processes? Right Ans - use w
How to list all service
units regardless of the activation states? Right Ans - systemctl list-units --
type=service --all
How to see the state of all
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