More on command line parsing can be found on the PATH and FOR (especially FOR's interactive examples) pages. Keep in mind, though, that these "features" may vary with the operating systems used. I know of several occasions where these seemingly useless "features" proved very handy.
![calmira nt shell calmira nt shell](https://www.betaarchive.com/imageupload/2017-12/1512938470.or.28504.png)
trailing spaces after the last command line argument are trimmed.leading spaces before the first command line argument are ignored.multiple spaces are replaced by a single space, unless they are part of a string in doublequotes.the first forward slash ("/") is replaced by a space only if it immediately follows the command, without a leading space."=" characters are sometimes replaced by spaces, not if they are part of a string in doublequotes.semicolons (" ") are replaced by spaces, unless they are part of a string in doublequotes.commas (",") are replaced by spaces, unless they are part of a string in doublequotes.Some characters in the command line are ignored by batch files, depending on the DOS version, whether they are " escaped" or not, and often depending on their location in the command line: Now your batch file handles %%A instead of %1.To use this feature, Command Extensions should be enabled.Īn easy work-around in NT 4 and later is: FOR %%A IN (%*) DO ( SHIFT /4 will leave %0 through %3 untouched, and shift %5 to %4, %6 to %5, etcetera.
#CALMIRA NT SHELL WINDOWS#
In Windows NT 4, 2000 and XP you can SHIFT the command line parameters starting from the nth positions using SHIFT's / n switch, where n can be any (integer) number between 0 and 8:
![calmira nt shell calmira nt shell](https://i1.wp.com/blogs.embarcadero.com/wp-content/uploads/2020/08/5481.calmira.png)
In that case, use IF = or, in NT 4 (SP6) and later only, IF "%~1"="" instead. IF "%1"="" will cause problems if %1 is enclosed in quotes itself. Use a loop to handle any number of command line parameters: OFF However, %10 does not equal J but A0 %10 is interpreted as %1, immediately followed by a 0.ĭoes that mean the rest of the parameters is lost?Īfter your batch file handled its first parameter(s) it could SHIFT them (just insert a line with only the command SHIFT), resulting in %1 getting the value B, %2 getting the value C, etcetera, till %9, which now gets the value J.Ĭontinue this process until at least %9 is empty. Now %1 equals A, %2 equals B, etcetera, until %9, which equals I. Let us assume your batchfile is called with the command line parameters A B C D E F G H I J K. The batch file's limitation to handle parameters up to %9 only can be overcome by using SHIFT. This means that, in AUTOEXEC.BAT, you can check if it is being started at boot time or from the command line, for example to prevent loading TSRs twice. Since %0 is the program name as it was called, in DOS %0 will be empty for AUTOEXEC.BAT if started at boot time. Read my SETLOCAL page if you intend to use SETLOCAL extension switches.īatch files can only handle parameters %0 to %9 Likewise, you may disable command extensions using SETLOCAL DISABLEEXTENSIONS or CMD /Y. However, to be absolutely sure that they are, either use SETLOCAL ENABLEEXTENSIONS within your NT shell scripts (batch files) or execute those scripts using CMD /X. VoltCraft Energy Logger 3500 ConfigurationĬommand extensions enable extra features in NT shells.īy default command extensions are enabled.