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kjobs.c
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kjobs.c
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#include "headers.h"
void shell_kjobs(char **commands, int processes[])
{
int i = 0;
int total_commands = 0;
while(commands[total_commands] != NULL)
total_commands++;
if(total_commands != 3)
{
perror("Usage: kjobs <jobnumber> <signalNumber>\n");
return;
}
while(commands[1][i] != '\0')
{
if(commands[1][i] < '0' || commands[1][i] > '9')
{
perror("Usage: kjobs <jobnumber> <signalNumber>\n");
return;
}
i++;
}
i = 0;
while(commands[2][i] != '\0')
{
if(commands[2][i] < '0' || commands[2][i] > '9')
{
perror("Usage: kjobs <jobnumber> <signalNumber>\n");
return;
}
i++;
}
int jobnumber = atoi(commands[1]);
int signalNumber = atoi(commands[2]);
int cntr = 1;
for(i = 0;i < 1000; i++)
{
if(processes[i] == -1)
continue;
if(cntr == jobnumber)
{
int x = kill(processes[i], signalNumber);
if(x < 0)
{
printf("Invalid signal number\n");
return;
}
break;
}
cntr++;
}
if(cntr != jobnumber)
printf("No such job number exists\n");
return;
}