Creating a file name as a timestamp in a batch job
For French Locale (France) ONLY, be careful because / appears in the date :
echo %DATE%
08/09/2013
For our problem of log file, here is my proposal for French Locale ONLY:
SETLOCAL
set LOGFILE_DATE=%DATE:~6,4%.%DATE:~3,2%.%DATE:~0,2%
set LOGFILE_TIME=%TIME:~0,2%.%TIME:~3,2%
set LOGFILE=log-%LOGFILE_DATE%-%LOGFILE_TIME%.txt
rem log-2014.05.19-22.18.txt
command > %LOGFILE%
CP source.log %DATE:~-4%-%DATE:~4,2%-%DATE:~7,2%.log
But it's locale dependent. I'm not sure if %DATE% is localized, or depends on the format specified for the short date in Windows.
Here is a locale-independent way to extract the current date from this answer, but it depends on WMIC and FOR /F:
FOR /F %%A IN ('WMIC OS GET LocalDateTime ^| FINDSTR \.') DO @SET B=%%A
CP source.log %B:~0,4%-%B:~4,2%-%B:~6,2%.log
Because the idea of tearing %DATE% and %TIME% apart and mashing them back together seems fragile at best, here's an alternative that uses a powershell oneliner:
for /f %i in ('powershell -c "get-date -format yyyy-MM-dd--HH-mm-ss"') do @set DATETIME=%i
set LOGFILE=my-script-%DATETIME%.txt
Reference for get-date is here, with format options for both .NET-style and UNIX-style.
This worked for me and was a filename-safe solution (though it generates a MM-dd-YYYY format):
C:\ set SAVESTAMP=%DATE:/=-%@%TIME::=-%
C:\ set SAVESTAMP=%SAVESTAMP: =%
C:\ set SAVESTAMP=%SAVESTAMP:,=.%.jpg
C:\ echo %SAVESTAMP%
[email protected]
The first command takes a DATE and replaces / with -, takes the TIME and replaces : with -, and combines them into DATE@TIME format. The second set statement removes any spaces, and the third set replaces , with . and appends the .jpg extension.
The above code is used in a little script that pulls images from a security IP Camera for further processing:
:while
set SAVESTAMP=%DATE:/=-%@%TIME::=-%
set SAVESTAMP=%SAVESTAMP: =%
set SAVESTAMP=%SAVESTAMP:,=.%.jpg
wget-1.10.2.exe --tries=0 -O %SAVESTAMP% http://admin:<password>@<ip address>:<port>/snapshot.cgi
timeout 1
GOTO while