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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.
Define BCD. A binary code that distinguishes between 10 elements must contain at least 4 bits, but 6 combinations will remain unassigned. Numerous dissimilar codes can be obtai
In a two stage network there are 512 inlets and outlets, r=s=24. If the probability that a given inlet is active is 0.8, calculate: the switching elements Given: N =M =512,
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The NOR gate output will be low if the two inputs are ? Ans. Output is low if any of the input is high means input may be 01,10 or 11.
What are the roll and page areas? Roll and page areas are SAP R/3 buffers used to kept user contexts (process requests). The SAP dispatcher assigns procedure requests to work
MX is conceptually easy, yet bears the fruit of years of domain experience and research. In a nutshell, JMX describes a standard means for applications to expose management functio
I tried to run two of the applets in the examples directory of the distribution? Ans) I tried to run two of the applets in the example directory of the distribution. I instal
program in c for scanline seed fill
Internal Organization of memory chip: Word line & bit lines 16x8 organization : 16 words of 8 bits per Form of an array
The situation when both transmitter and receiver have to work in tandem is referred to as? The situation while both transmitter and receiver have to work into tandem is termed
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