Коды возврата ошибок (расшифровки ErrorLevel)*

BREAK
ECHO
ENDLOCAL
FOR      Not change the ERRORLEVEL by itself. See "Exit Code" below.
IF       Not change the ERRORLEVEL by itself.
PAUSE
RD       Not change the ERRORLEVEL on errors, but the "Exit Code". See below.
REM
RMDIR    Same as RD.
SET      Plain SET command (no arguments). See "Table 3" below.
TITLE

Command │ Set ERRORLEVEL = 0 when       │ Set ERRORLEVEL = 1 when
────────┼───────────────────────────────┼─────────────────────────────────────────────────────────────
CD      │Current directory was changed. │Directory not exists or is not accessible.
CHDIR   │Same as CD.                    │
COLOR   │Color was changed.             │Background and foreground colors are the same.
COPY    │File(s) was processed.         │File not found or bad parameters given.
DATE    │Date was changed or not given. │User has no admin privileges.
DEL     │Almost always, excepting when: │Bad or no parameters given.
DIR     │Same as COPY.                  │
ERASE   │Same as DEL.                   │
MD      │Directory was created.         │Directory could not be created.
MKDIR   │Same as MD.                    │
MKLINK  │Link was created.              │Link could not be created or bad parameters given.
MOVE    │File(s) was moved/renamed.     │File not found, could not be moved/renamed or bad parameters.
PUSHD   │Same as CD.                    │+ Bad switch given.
REN     │Same as MOVE.                  │
RENAME  │Same as MOVE.                  │
SETLOCAL│New environment was created.   │Bad parameters given.
TIME    │Time was changed or not given. │User has no admin privileges.
TYPE    │Same as COPY.                  │
VERIFY  │Right or no parameters given.  │Bad parameters given.
VOL     │Volume label was displayed.    │Drive not found or bad parameters given.

Command      │E│ Set ERRORLEVEL to = when
─────────────┼─┼────────────────────────────────────────────────────────────────────────
ASSOC        │*│1 = Extension associations could not be changed.
CLS          │ │1 = Bad switch given.
DPATH        │*│1 = Data path could not be established.
FTYPE        │*│1 = File type associations could not be changed.
GOTO label   │ │1 = Label not exist *in a subroutine* (equivalent to: EXIT /B 1).
KEYS         │ │1 = Bad switch given.
PATH         │*│1 = Path could not be changed.
POPD         │ │1 = Bad switch given.
PROMPT       |*│1 = Prompt could not be changed.
SET var      │*│1 = No variable with such name exists.
SET var=value│*│1 = Variable name start with "/" not enclosed in quotes.
SET /P       │*│1 = Read an empty line or at end of file.
SET /A       │*│1073750988 = Unbalanced parentheses, 1073750989 = Missing operand, 
             │ │1073750990 = Syntax error, 1073750991 = Invalid number,
             │ │1073750992 = Number larger than 32-bits, 1073750993 = Division by zero.
SHIFT        │ │1 = Bad switch given.

CALL Table1     │If the called command is anyone of Table 1 (excepting FOR and IF): set ERRORLEVEL = 0.
CALL subroutine │If the subroutine is called, not change prior ERRORLEVEL value;
                │otherwise (subroutine not exists): set ERRORLEVEL = 1.
EXIT /B, EXIT   │Not change prior ERRORLEVEL value.
EXIT /B number  │Set ERRORLEVEL to given number.
EXIT number     │Ends cmd.exe and set its returning ERRORLEVEL value to given number.
START command   │If command is started, not change ERRORLEVEL; otherwise, set ERRORLEVEL = 9059.
START /WAIT bat |When the started Batch file end, set ERRORLEVEL = value from 'EXIT number' commmand.
notExist        │If a non-existent command is entered for execution, set ERRORLEVEL = 9009.
VER             │Set ERRORLEVEL = 0 almost always. If /? parameter is given, not change ERRORLEVEL.

Feature      │ Set Exit Code to = when
─────────────┼─────────────────────────────────────────────────────────────────────────
command      │1 = Command not exist (when ERRORLEVEL = 9009).
redirection  │1 = File not exists in "<", path not exists or access denied in ">" ">>".
drive:       |1 = Drive unit not exists.
POPD         |1 = No matching PUSHD was previously executed.
RD           │1 = Bad switch given, 2 = Directory not found, 5 = Access denied,
             │32 = Directory in use, 145 = Directory not empty.
FOR /F       │1 = No data was processed.

command > C:\Path\that\does\not\exist\file.txt || rem
if errorlevel 1 echo Previous redirection failed

U: || rem
if errorlevel 1 echo Previous set current drive to U: unit failed

rd c:\Some\directory 2> NUL || rem
if %errorlevel% equ 0 (
   echo Directory deleted
) else if %errorlevel% equ 2 (
   echo Directory not found
) else if %errorlevel% equ 5 (
   echo Can not access the directory, check rights
) else if %errorlevel% equ 32 (
   echo Can not delete current directory
) else if %errorlevel% equ 145 (
   echo Directory is not empty, use /S switch
)
(for /F "options" %%a in (input.txt) do echo %%a) || rem
if errorlevel 1 echo Previous FOR didn't processed any value