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pushd.cpp

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#include <iostream>

#include <stack>

#include <string>

#include <unistd.h>

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

if (argc < 2) {

std::cerr << "Error: no directory provided" << std::endl;

return 1;

}

if (chdir(argv[1]) != 0) {

perror("chdir");

return 1;

}

char cwd[1024];

if (getcwd(cwd, sizeof(cwd)) == NULL) {

perror("getcwd");

return 1;

}

std::string current_dir(cwd);

static std::stack<std::string> dirstack;

dirstack.push(current_dir);

std::cout << current_dir << std::endl;

std::cout << "Directory stack:" << std::endl;

for (const auto& dir : dirstack) {

std::cout << " " << dir << std::endl;

}

return 0;

}