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I would like to redirect the output of a command (in the Windows command line) to a file which name is the current date and time. For example:
my_path\mysqldump.exe my_database_name > auto_generated_file_name
where auto_generated_file_name should be something like 2010_09_30___11_41_58.txt.
This command will automatically run from time to time. This is the reason I need the file name to be automatically generated.
What is the easiest method to achieve this ?
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I'd use YYYY-MM-DD HHmmss for filenames, unless there is a particular need for timezones or a possible need to parse them into ISO dates; in those cases an ISO date would probably be preferrable.
To redirect the output of a command to a file, type the command, specify the > or the >> operator, and then provide the path to a file you want to the output redirected to. For example, the ls command lists the files and folders in the current directory.
a date, or at least the year, when the contents of the file were created, in the YYYY-MM-DD format (four digit year, two digit month, two digit day, with a dash in between.)
Redirecting output to Multiple files and screen: If you want to redirect the screen output to multiple files, the only thing you have to do is add the file names at the end of the tee command.
The following command creates a blank file with the expected filename:
> type nul > %date:~10,4%_%date:~4,2%_%date:~7,2%__%time:~0,2%_%time:~3,2%_%time:~6,2%.txt
> dir /b
2010_09_29__22_12_44.txt
You can use the part after type nul > in place of your auto_generated_file_name.
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