함수 file_exists()

함수 file_exists()
함수 dir_exists()

Checks whether a file or directory exists

1 Bash[ | ]

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

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

2 CMD[ | ]

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

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

3 C#[ | ]

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.

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
}

5 Java[ | ]

자바 File.exists() 문서를 참고하십시오.

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.

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

7 Python[ | ]

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

8 Perl[ | ]

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

9 같이 보기[ | ]

10 참고[ | ]

http://eqcode.com/wiki/File_exists