windows call command one by one

windows batch file call command for 200 times.

call: Calls one batch program from another without stopping the parent batch program. The call command accepts labels as the target of the call.

REM call command for 200 times
FOR /L %%A IN (1,1,200) DO (
	ECHO %%A
	echo generate done
	REM pause
 
	call work_bat_0.bat
	REM pause
	call work_bat_1.bat
 
	echo done.
	REM pause
)
pause
 

&    separates commands on a line.
 
&&    executes this command only if previous command's errorlevel is 0.
 
||    (not used above) executes this command only if previous command's errorlevel is NOT 0
 
>    output to a file
 
>>    append output to a file
 
<    input from a file
 
|    output of one command into the input of another command
 
^    escapes any of the above, including itself, if needed to be passed to a program
 
"    parameters with spaces must be enclosed in quotes
 
+ used with copy to concatenate files. E.G. copy file1+file2 newfile
 
, used with copy to indicate missing parameters. This updates the files modified date. E.G. copy /b file1,,
 
%variablename% a inbuilt or user set environmental variable
 
!variablename! a user set environmental variable expanded at execution time, turned with SetLocal EnableDelayedExpansion command
 
%<number> (%1) the nth command line parameter passed to a batch file. %0 is the batchfile's name.
 
%* (%*) the entire command line.
 
%<a letter> or %%<a letter> (%A or %%A) the variable in a for loop. Single % sign at command prompt and double % sign in a batch file.

ref:

call | Microsoft Docs
https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/call
cmd - What does “&&” do in this batch file? - Stack Overflow
https://stackoverflow.com/questions/28889954/what-does-do-in-this-batch-file#:~:text=%26%26%20runs%20the%20second%20command,with%20an%20errorlevel%20of%201.&text=%26%20separates%20commands%20on%20a%20line.