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Like a normal read, your input should break on the new line character "\n" and also on the up and down arrow keys. You will process the input made by the user when he/she enters new line.
History
Your shell must keep a history of the last 10 commands executed. When the user presses the up key the current input should show the last command executed (as the user typed it). So if the user executed the "ls" command, then pressed the up key, then pressed enter, the ls command should be executed. When the user presses up multiple times, you should replace the input with the next previous command. Until you reach the end of the history list (max of 10). If the user presses up and reaches the end of the list, the next time up is pressed nothing should happen. Conversely when the down arrow is pressed you should cycle through the history in the other direction. So if
the user presses down without pressing up, nothing should happen. That is because you will be at the bottom of the list. After a command is executed it should be added to the list and the index of where the user is in the history should be reset. This functionality should be similar to how the Bash shell works.
A protocol is a formal description of message formats and the rules two or more machines must follow to exchange those messages. Because TCP (transmission control protocol) and IP
What are the functions of passes used in two-pass assembler? In an assembly language program, two pass translations can handle forward references early. The subsequent task
Write a function that will prompt the user individually for a filename and extension and will make and return a string with the form 'filename.ext'.
A router connects to at most K networks. How many routers R are required to connect to N networks? Derive an equation that gives R in terms of N and K. If N K and K >=2 this
What is random access memory(RAM or MAIN MEMORY) and mention its types? The main memory in the central storage unit in a computer system. It is relatively large and fast memory
What is a accepting computation history? An accepting computation history is explained as , Let M be a Turing machine and w be a input string, for M on w is a sequence of con
managing devices and disks
Why data bus is bidirectional and address bus is unidirectional in most microprocessors? The data bus is bidirectional because the data bus has to transfer data among the CPU a
Reduced Instruction Set Computer (RISC): As we discussed before most of the modern CPUs are of the GPR (General Purpose Register) type. A few instances of such type of CPUs ar
every source is coherent source-justify it?
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