Shell/envSet.c at master · qureshinomaan/Shell · GitHub

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#include<dirent.h>
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<sys/wait.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<unistd.h>
#include<signal.h>
#include<sys/resource.h>
#include<time.h>
#include<sys/types.h>


struct stat statRes;
struct rusage usage;
char command[100],cpy_cmd[100];
char home[100],pwd[100],dir[100],user[256],host[256];
int id;
char input_file[100], output_file[100];
int inputD, outputD;
int current_fg;
int amIPiped[100] , isNxtPiped[100] ;
int piping[100][2];
int cmdcnt;

extern void envSet(char *argv[], int len)
{
		printf("len :  %d\n", len);
		if(len != 2 && len != 3)
			printf("Error!! Unsufficient Number of arguments.\n");
		else if(len == 2)
			setenv(argv[1], "", 1);
		else if (len == 3)
			setenv(argv[1], argv[2], 1);

}

extern void unenvSet(char *argv[], int len)
{
	if(len == 1)
		printf("Error!! Unsufficient Number of Arguments.\n");
	if(unsetenv(argv[1]) == 0);
	else
		printf("unsetenv failed!\n");
}