If x + 1/x = 3, find x² +

Which command is used to make a shell script executable?

In bash, what does trap 'echo Exit' EXIT do?

In shell scripting, which symbol is used to redirect the standard output to a file, overwriting its contents?

Which command is used to display the first few lines of a file?

Which command is used to display the contents of a file in Linux?

In shell scripting, $1 represents:

Which ETL process step validates and cleans data before loading?

In shell scripting, which symbol represents all files in the current directory?

Star schema consists of:

Which operator is used to append output to a file?