함수 file_exists()

함수 file_exists()

함수 dir_exists()

• Checks whether a file or directory exists

1 Bash

Bash 파일 있는지 확인 문서를 참고하십시오.

Bash

Copy

filename='/etc/hosts'
if [ -f $filename ]; then
    echo "'$filename' exists."
else
    echo "'$filename' does not exist."
fi

Bash

Copy

if [ ! -f $filename ]; then
  echo "'$filename' does not exist."
fi

2 CMD

bat

Copy

if exist "C:\Windows\Setup.log" echo exists.
REM exists.
if not exist "C:\Windows\Setup2.log" echo not exists.
REM not exists.

bat

Copy

if exist "C:\Windows\" echo exists.
REM exists.
if not exist "C:\Windows2\" echo not exists.
REM not exists.

3 C#

C#

Copy

string filename = @"C:\Users\Public\DeleteTest\test.txt";
if(System.IO.File.Exists(filename)) {
  Console.WriteLine(filename + " exists.");
} else {
  Console.WriteLine(filename + " does not exists.");
}

4 Go

Go FileExists() 문서를 참고하십시오.

Go

CPU

-1.0s

MEM

-0M

-1.0s

Copy

package main

import (
	"fmt"
	"os"
)

func FileExists(filename string) bool {
	info, err := os.Stat(filename)
	return err == nil && !info.IsDir()
}

func main() {
	// true
	fmt.Println(FileExists("/etc/services")) // File Exists

	// false
	fmt.Println(FileExists("/etc/file-not-exists")) // File Not Exists
	fmt.Println(FileExists("/etc"))                 // Directory Exists
}

true
false
false

5 Java

자바 File.exists() 문서를 참고하십시오.

Java

Copy

System.out.println( new File("C:\\Windows\\win.ini").exists() );
System.out.println( new File("C:\\not-exist-file").exists() );
// true
// false

6 PHP

PHP file_exists() 문서를 참고하십시오.

PHP

Copy

var_dump( file_exists("/etc/hosts") );
var_dump( file_exists("/tmp/not-exist-file") );
# bool(true)
# bool(false)

7 Python

Python

Copy

import os.path
filename = '/etc/passwd'
if os.path.isfile(filename):
	print( filename + ' exists.' )
else:
	print( filename + ' does not exist.' )

8 Perl

Perl

Copy

my $filename = '/etc/passwd';
if ( -f $filename ) {
	print $filename . " exists.";
} else {
	print $filename . " does not exist.";
}

9 같이 보기

• 함수 is_file()
• 함수 is_dir()
• 함수 delete_file()

10 참고

• http://eqcode.com/wiki/File_exists