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Arlecino [84]
3 years ago
12

Four major parts of the keyboard

Computers and Technology
2 answers:
harina [27]3 years ago
5 0

Answer:

alphabetical keys, function keys, cursor keys, and the numeric keypad

Explanation:

galben [10]3 years ago
4 0

Answer:

Pretty much all of the keys on the keyboard are important. Also the touch pad.

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Write a parent program to fork(2) n processes where n is passed tothe program on the command line, and n can be from 1 to 10. Al
MrRissso [65]

Answer:

Complete code is given below:

Explanation:

#include <stdio.h>

#include <sys/types.h>

#include <unistd.h>

#include <time.h>

#include <sys/wait.h>

int main(int argc , char *argv[]){

pid_t mypid, childpid;

int status;

int i,n;

time_t t;

     

mypid = getpid();

printf("pid is %d.\n", mypid);

childpid = fork();

if ( childpid == -1 ) {

perror("Cannot proceed. fork() error");

return 1;

}

 

 

if (childpid == 0) {

 

 

mypid = getpid();

 

 

childpid = fork();

if ( childpid == -1 ) {

perror("Cannot proceed. fork() error");

return 1;

}

 

if (childpid == 0) {

 

mypid = getpid();

printf("Child pid is %d.\n", getppid());

 

childpid = fork();

 

 

if ( childpid == -1 ) {

perror("Cannot proceed. fork() error");

return 1;

}

random((unsigned) time(&t));

printf(" parent id = %d : Random = %d\n",mypid , (int)(random()% 100 +1));

printf("child id = %d : Random = %d\n",getpid , (int)(random()% 100 +1));

 

if (childpid == 0) {

 

printf("Child 2: I hinerited my parent's PID as %d.\n", mypid);

 

mypid = getpid();

printf("Child 2: getppid() tells my parent is %d. My own pid instead is %d.\n", getppid(), mypid);

 

sleep(30);

return 12;

} else return 15;

} else {

 

while ( waitpid(childpid, &status,0) == 0 ) sleep(1);

 

if ( WIFEXITED(status) ) printf("Child 1 exited with exit status %d.\n", WEXITSTATUS(status));

else printf("Child 1: child has not terminated correctly.\n");

}

} else {

printf(" fork() is ok and child pid is %d\n", childpid);

wait(&status);

 

if ( WIFEXITED(status) ) printf(" child has exited with status %d.\n", WEXITSTATUS(status));

else printf(" child has not terminated normally.\n");

}

 

return 0;

}

Output:

pid is 24503.

Child   pid  is 24565.

parent id = 24566 : Random = 87

child id = 1849900480 : Random = 78

pid is 24503.

Child 1  exited with exit status 15.

pid is 24503.

fork() is ok and child pid is  24565

child has exited with status 0.

6 0
3 years ago
I need a free flashdrive can anyone tell me any website links so i can get one for free????​
olga55 [171]

Answer:

wish

Explanation:

look for one that is free

4 0
3 years ago
A(n) _____________ is a simple tool that can help identify computers/devices or communication circuits that have higher-than-ave
jok3333 [9.3K]
Fdddfdashddxzvcsssgtd
3 0
3 years ago
The concept of "plug and play" is demonstrated by which of the following<br> scenarios?
bagirrra123 [75]

Answer:

Farah has completed a post-secondary education program and is now ready to begin working, without additional training, on her first day .

Explanation:  HoPe ThIs HeLpS

6 0
3 years ago
Which directory in the FHS stores programs and configuration information that can only be executed and modified by the root user
dlinn [17]

Answer: /sbin

Explanation:

In Linux, FHS describes the directory content and the way in which Operating System files are displayed to the user.

/sbin is a directory that contains executable programs. s/bin is the short form of system binaries. System binaries require root rights to perform specific tasks. /sbin contains binaries that are crucial to boot the system and also to recover and restore the system. /bin directory also contains the commands to boot the system but the main difference between both is that /sbin programs can only be executed by the root user. Examples are fdisk, fsck, root,halt, init, grub, ifconfig.

4 0
3 years ago
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