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Windows & DOS: Issues & Discussions
How to log current timestamp inside a for loop in windows shell?
Post 302386512 by Lakris on Tuesday 12th of January 2010 03:25:10 PM
01-12-2010
Hi,
I don't think I can add much to this observation, other than it is an example of how absurd the cmd shell is! I have wrestled with this from time to time. It should be such an easy thing to just ask for the current time, right?
The env variables DATE and TIME are set at .cmd-file execution start. But not entirely! If You have a script that runs over several minutes it *may* change! Or if You make a "call" to another script (that does echo %DATE% %TIME%), but they may simply
inherit the callers values, I don't recall correctly right now, but please try
If You use TIME You get an interactive command, but it shows You the "correct" time. If You use TIME /T it will only display HH:MM !
If You use TIME < NUL (instead of giving it the output of VER which is just garbage for the TIME command, that's why it works) it will give You an ugly prompt, so You will have to filter it.
So bloody stupid!
And don't get me started on such a simple thing as sleep... arrrrgh!
/Grrrr
I don't think I can add much to this observation, other than it is an example of how absurd the cmd shell is! I have wrestled with this from time to time. It should be such an easy thing to just ask for the current time, right?
The env variables DATE and TIME are set at .cmd-file execution start. But not entirely! If You have a script that runs over several minutes it *may* change! Or if You make a "call" to another script (that does echo %DATE% %TIME%), but they may simply
inherit the callers values, I don't recall correctly right now, but please try
If You use TIME You get an interactive command, but it shows You the "correct" time. If You use TIME /T it will only display HH:MM !
If You use TIME < NUL (instead of giving it the output of VER which is just garbage for the TIME command, that's why it works) it will give You an ugly prompt, so You will have to filter it.
So bloody stupid!
And don't get me started on such a simple thing as sleep... arrrrgh!
/Grrrr
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LEARN ABOUT OSX
time
TIME(1) BSD General Commands Manual TIME(1) NAME
time -- time command execution SYNOPSIS
time [-lp] utility DESCRIPTION
The time utility executes and times utility. After the utility finishes, time writes the total time elapsed, the time consumed by system overhead, and the time used to execute utility to the standard error stream. Times are reported in seconds. Available options: -l The contents of the rusage structure are printed. -p The output is formatted as specified by IEEE Std 1003.2-1992 (``POSIX.2''). The csh(1) has its own and syntactically different builtin version of time. The utility described here is available as /usr/bin/time to csh users. DIAGNOSTICS
The time utility shall exit with one of the following values: 1-125 An error occurred in the time utility. 126 The utility was found but could not be invoked. 127 The utility could not be found. Otherwise, the exit status of time shall be that of utility. SEE ALSO
csh(1), getrusage(2) FILES
/usr/include/sys/resource.h STANDARDS
The time utility conforms to IEEE Std 1003.2-1992 (``POSIX.2''). BUGS
The granularity of seconds on microprocessors is crude and can result in times being reported for CPU usage which are too large by a second. BSD
June 6, 1993 BSD