If x + y + z = 0, then what is the value of

Which command is used to search for a pattern in files?

OLAP is primarily used for:

Which character is used to denote a single-line comment in a shell script?

Which command is used to read user input from the keyboard and store it in a variable?

Which construct replaces a command with its output in a POSIX shell?

What is the exit status code of a successfully executed command in Linux shell?

What is the primary purpose of the "shebang" line `#!/bin/bash` at the beginning of a shell script?

Which symbol is used to comment a single line in shell scripts?

Which command is used to check the current working directory in Linux?

Which symbol is used for logical AND in shell scripting?