13.8 Exercises

See Appendix A, Exercise Answers for answers.

1. Write a program that works like rm , deleting the files given as command-line arguments when the program is invoked. (You don't need to handle any options of rm .)

   Be careful to test this program in a mostly empty directory so you don't accidentally delete useful stuff! Remember that the command-line arguments are available in the @ARGV array when the program starts.

2. Write a program that works like mv , renaming the first command-line argument to the second command-line argument. (You don't need to handle any options of mv , or more than two arguments.) You may wish to consider how to handle the rename when the destination is a directory.

3. Write a program that works like ln , creating a hard link from the first command-line argument to the second. (You don't need to handle any options of ln , or more than two arguments.)

4. If you have symlinks, modify the program from the previous exercise to handle an optional -s switch.

5. If you have symlinks, write a program that looks for all symlinked files in the current directory and prints out their name and symlinked value similar to the way ls -l does it ( name -> value ). Create some symlinks in the current directory and test it out.