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Marianna [84]
2 years ago
12

What would a match() property that passed the expression /^[0-9]/ check for?

Computers and Technology
2 answers:
lord [1]2 years ago
7 0

Answer:

E

Explanation:

I took the test

seraphim [82]2 years ago
4 0

Answer:

B.  all strings that contain only numerals

Explanation:

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Write a client program that writes a struct with a privateFIFO name (call it FIFO_XXXX, where XXXX is the pid that you got from
ivann1987 [24]

Answer:

client code:

#include <stdio.h>

#include <fcntl.h>

#include <sys/stat.h>

#include <sys/types.h>

#include <unistd.h>

#include <stdlib.h>

#include <string.h>

int main (void)

{

 struct values

 {

   char privateFIFO[14];

   int intbuff;

 }input;

 int fda;  // common FIFO to read to write to server

 int fdb;      // Private FIFO to read from server

 int clientID;

 int retbuff;

 char temp[14];

 clientID = getpid();

 strcpy(input.privateFIFO, "FIFO_");

 sprintf(temp, "%d", clientID);

 strcat(input.privateFIFO, temp);

 printf("\nFIFO name is %s", input.privateFIFO);

 // Open common FIFO to write to server

 if((fda=open("FIFO_to_server", O_WRONLY))<0)

    printf("cant open fifo to write");

 write(fda, &input, sizeof(input));    // write the struct to the server

 close(fda);

 // Open private FIFO to read

 if((fdb=open(input.privateFIFO, O_RDONLY))<0)

    read(fdb, &retbuff, sizeof(retbuff));

 printf("\nAll done\n");

 close(fdb);

}

server code:

#include <stdio.h>

#include <errno.h>

#include <fcntl.h>

#include <sys/stat.h>

#include <sys/types.h>

#include <unistd.h>

#include <stdlib.h>

#include <string.h>

struct values

 {

   char privateFIFO[14];

   int intbuff;

 }input;

int main (void)

{

 int fda;  //common FIFO to read from client

 int fdb;  //private FIFO to write to client

 int retbuff;

 int output;

// create the common FIFO  

 if ((mkfifo("FIFO_to_server",0666)<0 && errno != EEXIST))

       {

       perror("cant create FIFO_to_server");

       exit(-1);

}

// open the common FIFO

 if((fda=open("FIFO_to_server", O_RDONLY))<0)

    printf("cant open fifo to write");

output = read(fda, &input, sizeof(input));

// create the private FIFO

 if ((mkfifo(input.privateFIFO, 0666)<0 && errno != EEXIST))

 {

   perror("cant create privateFIFO_to_server");

   exit(-1);

 }

 printf("Private FIFO received from the client and sent back from server is: %d", output);

 //open private FIFO to write to client

if((fdb=open(input.privateFIFO, O_WRONLY))<0)

   printf("cant open fifo to read");

 write(fdb, &retbuff, sizeof(retbuff));

 close(fda);

 unlink("FIFO_to_server");

 close(fdb);

 unlink(input.privateFIFO);

}

Explanation:

3 0
3 years ago
Which line of code will find the first occurrence of a three in an array?
eduard
Arr.index[3] is most likely true
5 0
3 years ago
Read 2 more answers
You use lpstat and determine that a user named User1 has placed two large print jobs in the queue for Printer1 that have yet to
ICE Princess25 [194]

A command that should be used to remove these two print jobs from the print queue is cancel Printer1-17 Printer1-21.

<h3>What is printing?</h3>

Printing can be defined as a process that typically involves sending print jobs from a computer system to a printer, especially through the print queue.

In Computer technology, "cancel Printer1-17 Printer1-21" is a command that should be used to remove the two (2) print jobs from the print queue of Printer1 which is yet to start printing.

Read more on printer here: brainly.com/question/17100575

#SPJ1

6 0
2 years ago
What output is produced by
Natasha_Volkova [10]

Answer:

The answer to this question is given below in the explanation section. the correct option is C.

Explanation:

This is Java code statement:

System.out.print("Computing\nisInfun");

The output of this code statement is

Computing

isInfun

However, it is noted that the C option is not written correctly, but it is guessed that it will match to option C.

This Java code statement first prints "Computing" and then on the next line it will print "isInfun" because after the word "Computing" there is a line terminator i.e. \n. when \n will appear, the compiler prints the remaining text in the statement on the next line.

4 0
3 years ago
Which of the following software program provides for email communication
olga2289 [7]
If "Outlook" is one of the options then thats the answer.
6 0
3 years ago
Read 2 more answers
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