If
.
if [ not ] errorlevel [ else ]
if [ not ] 1 == 2 [ else ]
if [ not ] exist _ [ else ]
not - .
errorlevel - , , Cmd.exe, , .
- , .
1 == 2 - , 1 2 . (, %1). .
exist _ - , _.
_ - . _.
| EQU | |
| NEQ | |
| LSS | |
| LEQ | |
| GTR | |
| GEQ |
, :
if [ /i ] 1 _ 2 [ else ]
if cmdextversion [ else ]
if defined [ else ]
/i - . /i string1 == string2 if. . 1, 2 , .
cmdextversion - , , Cmd.exe, . 1. 1 . cmdextversion , ( ).
defined - , .
- else.
, if, , , . , , if, , else, .
, . errorlevel .
defined
defined : %errorlevel%, %cmdcmdline% %cmdextversion%.
%errorlevel% errorlevel, ERRORLEVEL. .
|
|
|
errorlevel :
goto answer%errorlevel%
:answer0
echo 0
:answer1
echo 1
goto end
:end
echo !
_ :
if %errorlevel% LEQ 1 goto okay%cmdcmdline% , Cmd.exe, Cmd.exe, cmdcmdline. cmdcmdline.
%cmdextversion% cmdextversion, CMDEXTVERSION. .
else
else , if., :
IF EXIST _. (del _.) ELSE echo _.
Product.dat , :
if not exist product.dat echo
if , (NUL). , , . :
if exist c:mydir\nul goto process
if echo : :
if exist *.rpt echo .
For
.
for { % | %% } in ( ) do [ ]
{ % | %% } - . . % for . %% for . , , %A, %B %C.
( ) - . , , , . .
- . , , , ( ).
- , .
for
for .
for.
for %% ( %% ) , .
for , 52 .
, 09, %0 %9. , %%f.
|
|
|
. (* ?). :
(*.doc)
(*.doc *.txt *.me)
(jan*.doc jan*.rpt feb*.doc feb*.rpt)
(ar??1991.* ap??1991.*)
for, %% ( % ), . , ( ), .
in do
In do , for. - , .
for
( ), for.
(* ?), , , ( ), . .
for /D { %% | % } in ( ) do [ ]
[ : ] , for . /R , . (.), . .
for /R [[ : ] ] { %% | % } in ( ) do [ ]
for .
2.1. . Lab2.
2.2. , copy (Far, Total Commander). , .bat .cmd, My.bat. , :
echo off
echo.
echo
echo
echo echo
echo.
2.3. - Ctrl+Z.
2.4. , .
2.5. rem, pause, goto . A . , pause , . . goto begin . CTRL+C Y. , :
@echo off
rem It is comment!
:begin
copy a:*.*
echo Please put a new disk into drive A
pause
goto begin
2.6. . . , , - -. , Folder1 Folder2, %1 Folder1, %2 Folder2. :
xcopy %1\*.* %2
2.7. my3.cmd, :
|
|
|
my3.cmd C:\folder1 D:\folder2
, :
xcopy C:\folder1 \*.* D:\folder2
, , .
2.8. shift, if .
Mycopy.bat , shift . . . todir.
MYCOPY.BAT . :mycopy 1 2...:@echo offset todir=%1:getfileshiftif "%1"=="" goto endcopy %1 %todir%goto getfile:endset todir=echo EXIT!
shift /n, n- , n . shift /2 todir. :
@echo on:getfileif "%2"=="" goto endcopy %2 %1shift /2goto getfile:endecho EXIT!
