Linux File Management Quiz

Basic Linux Commands and Concepts

• The command to list all folders and files in the current directory is ls.
• The slash (/) symbol denotes the root directory in Linux, serving as the starting point of the file system hierarchy.

Specific Commands and Outputs

• The command ls /home displays the contents of the /home directory, which typically contains user home directories.
• The command ls /home/centos lists the files and folders inside the centos user's home directory.

Variables and Outputs

• The equal sign (=) is used to assign commands or values to variables in Linux.
• Executing echo $hello will result in the output of the variable 'hello', which returns an empty string if 'hello' is not defined.

Tools for Text Processing

• The grep command searches for specific text patterns within files and outputs matching lines.
• After running now=$(grep Bash hello), the variable 'now' will hold the lines containing "Bash" from the file named "hello."

Stream Editing

• The sed command is a stream editor used for parsing and transforming text in a pipeline, allowing for complex text manipulations.