C LANGUAGE ONLY Limited Shell Through this program, you will learn to do the following: Work with processes using fork, pipe, wait, dup2, and the exec system calls. Additional practice with a Makefile with an all target Work with the different address spaces The main idea of this program is to write a limited function shell that only runs a few programs from a menu. Perform "four" small programs to start with followed by the menu program called newshell. Part 5. newshell Write a parent program similar to myshell.c but called newshell which will allow the user to choose from a menu of options. Usage would be: newshell 1 letters 2 numbers 3 firstname 4 userinput 5 letters > filename (letters redirected to a file) 6 letters | userinput (letters piped to userinput) 7 firstname| userinput (names piped to userinput) 8 exit (your program should end by leaving the infinite loop.) These programs should be completed with the process commands fork, pipe, wait, dup2, and the 6 exec programs. The newshell program should not run any of the other programs, it should fork off children to run the programs.
C LANGUAGE ONLY
Limited Shell
Through this
- Work with processes using fork, pipe, wait, dup2, and the exec system calls.
- Additional practice with a Makefile with an all target
- Work with the different address spaces
The main idea of this program is to write a limited function shell that only runs a few programs from a menu.
Perform "four" small programs to start with followed by the menu program called newshell.
Part 5. newshell
Write a parent program similar to myshell.c but called newshell which will allow the user to choose from a menu of options.
Usage would be: newshell
1 letters
2 numbers
3 firstname
4 userinput
5 letters > filename (letters redirected to a file)
6 letters | userinput (letters piped to userinput)
7 firstname| userinput (names piped to userinput)
8 exit (your program should end by leaving the infinite loop.)
These programs should be completed with the process commands fork, pipe, wait, dup2, and the 6 exec programs. The newshell program should not run any of the other programs, it should fork off children to run the programs.
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