The ksh Manpage and Your Environment Configuration:

Examine the manpage for the Korn shell (i.e., ksh). Remember, the kshmanpage is the sole authoritative reference for ksh on any system. The manpage explains all of the features supported by the shell and also docu- ments the various shell variables that tailor the beh avior of the shell. Next, examine your .profile and .kshrc files in your home directory. See which shell variables are set or altered by these files as well as which Linux commands are started from them. Take care to ensure that you un- derstand the behavior these settings affect before you change any. Being careless can result in inaccessibility to your account or files, even by you! Take note of any command aliases that have already created for you in the default setup of your account.

Customization:

a) Choose eight different aspects of the Korn shells or other programs be- havior that you can alter by setting or modifying the values of shell vari- ables only (i.e., not by simply adding commands or aliases). Modify your startup files so that your customizations will take effect at a desired time (e.g., at login or when you instigate a new shell or both).

b) Add or modify two Linux commands or shell built-in commands that are called from these startup files.

c) Create or modify five command aliases to use as shorthand abbrevi- ations for commands. Choose aliases that you believe are be personally useful.

Your solution file must be a plain ASCII text file in the format defined be- low, describing each shell variable, command, and key binding you added or modified. Do not insert any extra notes or explanations (other than what is asked for here). Specifically, for each modification (there are 15 in total: eight variables, 2 commands, 5 aliases):

a) describe the change you made (include the name of the variable created or altered or the specific command used or alias created)

b) describe the purpose of the modification and how the behavior of the shell differs as a result

c) state in which startup file you made the change d) describe why you made the change in that startup file