What does this bash statement do? (( $a == $b ); echo $?

What do you use in a case statement to tell Bash that you're done with a specific test?

What Bash script will correctly create these files?

Which variable would you check to verify that the last command executed successfully?

How can you gather history together for multiple terminals?

What is the difference between the $@ and $* variables?

What does the + signify at the end of the 10-digit file permissions on data.txt? ls -l -rwx------+ 1 user1 u1 0 Oct 1 10:00 data.txt

When used from within a script, which variable contains the name of the script?

Which statement checks whether the variable num is greater than five?

When executing a command and passing the output of that command to another command, which character allows you to chain these commands together?

In order to write a script that iterates through the files in a directory, which of the following could you use?