Window

사용할 때마다 정리해두기!

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윈도우 실행

• win+R : 실행창
• ctrl+shift+enter : 관리자 권한으로 실행

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Linux command vs Window cmd command

업데이트 중 …

Linux	Window
pwd	cd ,
cd	cd
ls	dir

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Window  batch file에서 %의 의미

출처 : https://jeffpar.github.io/kbarchive/kb/075/Q75634/

Q75634: Percent Signs Stripped from Batch File Text

An Archive of Early Microsoft KnowledgeBase Articles

1. 배치 파일에서 %0~9는 매개 변수라는 의미로 사용된다. 

MS-DOS uses %1, %2, ... %9 as replaceable command line parameters. For example,
before executing the command ECHO %1, %1 will be replaced with the first
parameter passed to the batch file. %0 is replaced with the command used to
execute the batch file.
Code language: JavaScript (javascript)

2. 1번의 경우를 제외한 하나의 **%**는 ‘nul‘로 인식한다.

A single percent sign on a line is treated as a "nul" character in a batch file.
For example:

  ECHO %     is processed as ECHO
  ECHO a%b   is processed as ECHO ab
Code language: PHP (php)

3. 두 개의 %와 % 사이에 문자가 있는 경우에 환경 변수로 해석됩니다. 

If a command contains two percent signs, MS-DOS will treat any characters between
them as an environment variable to be expanded. For example, if the SET command
shows that the current environment variables are

  COMSPEC=C:\COMMAND.COM
  PATH=C:\DOS
  PROMPT=$P$G
  B=C

then

  ECHO %PATH%     is processed as ECHO C:\DOS
  ECHO a%b%       is processed as ECHO aC
  ECHO a%b b%a    is processed as ECHO aa 
  // %b b%라는 변수는 없다.
Code language: PHP (php)

4. 배치 파일에선 사이에 아무것도 없는 두 퍼센트 기호 **%%**는 **단일 퍼센트 기호 %**를 사용하고 싶을 때 사용한다.

If there are no characters between the two percent signs, one percent sign is
stripped off and the other will remain. This is why a FOR command that echos the
name of each file with a .COM extension would be

  FOR %V IN (*.COM) DO ECHO %V

but if the same command is placed in a batch file, the following is required:

  FOR %%V IN (*.COM) DO ECHO %%V
Code language: PHP (php)