कोई कामरिक छतीसगढ़ के

How do you access the value of a variable named `USERNAME` in a shell script?

Which command displays the manual page for another command?

Named pipes (FIFOs) are created using:

Which of the following is the syntax for an `if` statement checking if a variable `NUM` is numerically equal to 5?

Which signal is sent by default when using kill without arguments?

How can you make a shell script executable?

Which construct allows embedding a block of text in shell scripts as input?

Which command is used to find the number of lines, words, and characters in a file?

Which special file enables interprocess communication using named pipes?

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