Unix commands that will execute the steps below

When you have a command line that does what the step asks you to do, paste it into hw8.sh using nano or any other text editor

1.Perform the following actions

Run ls on a file that does not exist

Run ls on the same file, but redirect Standard Error to /dev/null

Run ls on the same file, but redirect Standard Error to errors.txt

Print errors.txt to the terminal

Run one command for each of the items above.

2.Using 3 commands on the same command line

Go to your home directory

Run ls

Return to your hw8 directory

3.Copy bother10.sh from /home/ghoffman/course_files/it244_files to your hw8 directory. Write a single command line that

Runs bother10.sh in the background sending the output to /dev/null

Runs bother10.sh in the background sending the output to /dev/null

Runs bother10.sh in the background sending the output to /dev/null

Runs ps in the foreground

4.Using the directory stack mechanism do the following

Go to your home directory

Show your position in the filesystem

Go to my home directory

Show your position in the filesystem

Return to your home directory

Show your position in the filesystem

Return to you hw8 directory

Show your position in the filesystem

5.Do the following

Create the local variable foo and assign it the value "FOO"

Create the global variable bar and assign it the value "BAR"

Write a single command that will print the values of foo and bar

6.Do the following

Copy print_foo_bar.sh from /home/ghoffman/course_files/it244_files to your hw8 directory

Run print_foo_bar.sh

The value of foo will not print because it is local to the login shell and cannot be seen in a subshell.

7.Do the following

Create the global variable my_city and assign it the name of the town you live in

Write an echo statement that uses my_city to tell me where you live. The entire statement must be quoted.

8.Print the value of the keyword shell variable whose value is a list of all the directories Bash will search to find an executable file with the same name as the command you typed on the command line.

9.Print the value of the keyword shell variable whose value is the absolute pathname of your default shell.

10.Run a command that will show you all your global variables.