C# file существует
if (File.Exists("file.exe"))
{
//file exist
} else {
//does not exist
}
Binary Killer
if (File.Exists("file.exe"))
{
//file exist
} else {
//does not exist
}>>> import os
>>> os.path.isfile("d:\\Package1\\package1\\fibo.py")
True
>>> os.path.isfile("d:/Package1/package1/fibo.py")
True
>>> os.path.isfile("d:\\nonexisting.txt")# check if file exists
from os.path import exists
file_exists = exists("/content/sample_data/california_housing_test.csv")
print(file_exists)
#True
from pathlib import Path
path = Path("/content/sample_data/california_housing_test.csv")
path.is_file()
#Falsefrom pathlib import Path
if Path('filename.txt').is_file():
print ("File exist")
else:
print ("File not exist")#define BOOST_FILESYSTEM_VERSION 3
#define BOOST_FILESYSTEM_NO_DEPRECATED
#include <boost/filesystem.hpp>
namespace fs = boost::filesystem;
/**
* \brief Return the filenames of all files that have the specified extension
* in the specified directory and all subdirectories.
*/
std::vector<fs::path> get_all(fs::path const & root, std::string const & ext)
{
std::vector<fs::path> paths;
if (fs::exists(root) && fs::is_directory(root))
{
for (auto const & entry : fs::recursive_directory_iterator(root))
{
if (fs::is_regular_file(entry) && entry.path().extension() == ext)
paths.emplace_back(entry.path().filename());
}
}
return paths;
}[ -f /etc/resolv.conf ] && { echo "$FILE exist."; cp "$FILE" /tmp/; }