NEED YALL TO DO 1-7

31.15 Exercises 1. The date command prints the date and current time. Add the following line to your .bash-profile, making sure to use backquotes around date echo "The date and time are 'date'." Exit the editor and run the .bash profile using the "dot" command. What happens? 2. The backquotes were needed in the previous exercise to tell the shell that date was to be interpreted as a command, not as a word. What happens if the back- quotes are omitted? Try it. Open .bash_profile and remove the backquotes from date echo "The date and time are date" Exit the editor and run the . bash-profil e using the dot" command, what happens? (Now open up the file and replace the backquotes.) 3. What is your search path (PATH)? 4. What is the complete pathname for your shell? 5. The rm, cp, and mv commands are dangerous because they can overwrite or remove existing files. The -i ("interactive") option will ask you to confirm that this is what you want. If this option is available to you, add the following lines to your .bashrc file: alias -x rm='rm -i, alias -x cp='cp -i, alias -x mv'mv -i' Note that quotes are required around a command that contains a space. 6. Explain what the following lines would do if they were placed in your shell ini- tialization file all as m-more alias f-finger alias ls '1s -R 7. Most users set up their history mechanism to remember about 100 com mands. To do this yourself, open your .bashrc file and insert this line HISTSIZE-100 If you neglect to set the HISTSIZE variable, bash will remember the most recent 128 commands by default