RHCSA Exam
How do you Secure Shell into another system? - Answer- ssh <user>@<host>
How do you execute commands on a remote system via Secure Shell without actually opening a new shell? - Answer- ssh <user>@<host> <command>
How do you generate a public key and...
RHCSA Exam
How do you Secure Shell into another system? - Answer- ssh <user>@<host>
How do you execute commands on a remote system via Secure Shell without
actually opening a new shell? - Answer- ssh <user>@<host> <command>
How do you generate a public key and private key file for SSH authentication? -
Answer- ssh-keygen
How do you export a public key for SSH authentication on a different machine? -
Answer- ssh-copy-id <user>@<host>
How do you export a *specific* public key for SSH authentication on a different
machine? - Answer- ssh-copy-id <user>@<host> -i <key file path>
If an SSH authentication key has a passphrase, how do you cache that passphrase
on the local machine for passwordless authentication? - Answer- 1. eval $(ssh-
agent)
2. ssh-add <key file path>
What is Cockpit? - Answer- A server Management Tool
How do you check if a service is running? - Answer- systemctl status <service>
How do you start a service? - Answer- systemctl start <service>
How do you enable a service on startup? - Answer- systemctl enable <service>
Which directory contains persistent, system-specific configuration data? - Answer-
/etc
Which directory is the top of the system's file hierarchy? - Answer- /
Which directory contains user home directories? - Answer- /home
Which directory contains temporary files? - Answer- /tmp
Which directory contains dynamic data, such as for databases and websites? -
Answer- /var
Which directory is the administrative superuser's home directory? - Answer- /root
Which directory contains regular commands and utilities? - Answer- /usr/bin
Which directory contains non-persistent process runtime data? - Answer- /run
Which directory contains installed software programs and libraries? - Answer- /usr
, How do you create a directory? - Answer- mkdir <directory name>
How do you copy a file? - Answer- cp <old file> <new file>
How do you copy a directory and its contents? - Answer- cp -r <old directory> <new
directory>
How do you move (or rename) a file or directory? - Answer- mv <old file> <new file>
How do you remove a file? - Answer- rm <file>
How do you remove a directory containing files? - Answer- rm -r <directory>
How do you remove an empty directory? - Answer- rmdir <directory>
How do you create parent directories while creating a new directory? - Answer-
mkdir -p <new parent directories>/<new directory>
How do you list the contents of a directory? - Answer- ls
How do you list all contents of a directory including hidden files? - Answer- ls -a
How do you list the contents of a directory and subdirectories? - Answer- ls -R
How do you list the contents of a directory with more detailed information? - Answer-
ls -l
How do you change directories? - Answer- cd <directory path>
How do you change directories to the last directory you were in? - Answer- cd -
How do you change directories to the parent directory of your current directory? -
Answer- cd ..
How do you list the contents of a file? - Answer- cat <file>
How do you create an empty file/update an existing file's "last changed" timestamp
without making any changes? - Answer- touch <file>
How do you check the working directory? - Answer- pwd
How do you list directories that are on different file systems? - Answer- df
How do you create a soft link between two files/directories? - Answer- ln -s <existing
file path> <link path>
How can you view information about the current user? - Answer- id
How do you view information another user? - Answer- id <user>
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