Questions

1. Which of the following is true about the eval command?
   1. It’s always safe to use eval in your scripts.
   2. It’s always dangerous to use eval in your scripts.
   3. It’s only safe to use eval in your scripts if it only takes input from and external source.
   4. It’s only safe to use eval in your scripts if it only takes input from within your script.
2. Which two of the following statements are true about the /tmp/ directory? (Choose two.)
   1. It’s completely secure, because only administrative users can enter it.
   2. Anybody can create files in it.
   3. Anybody can read files that mktemp creates in the /tmp/ directory.
   4. Any files that mktemp creates in the /tmp/ directory can only be read by the user who created them.
3. How would you prevent an attacker from obtaining information from a binary that you’ve created with shc?
   1. It...