Official documentation for these special syntax is pretty sparse (or non-existent). runas invented its own parsing rules ( runas /flag "anything even including quotes") and does not interpret cmd arguments the usual way. It works fine without needing to escape " within quotes because runas knew that there's no way to do so and made internal adjustments to work around it. Sure, there's no way to get echo """ & echo 1 to work, but that's not such a big deal because it's simply a contrived problem which you'll likely never encounter.įor example, consider runas. However, the good news is that you'll most likely never come across a situation whereby you need to do so. This is just some of the inherent limitations of cmd scripting. You can brood over this for a couple of years and arrive at no solution. The fact is, there's nothing that will escape " within quotes for argument passing. And since chr (34) equals two double-quotes, I am unable to surround the path with an odd number (1 or 3) of double quotes. Nope, echo """" & echo 1 outputs """", and not """. It seems that from a command prompt, a del command will work with one double-quote surrounding the path, or three double-quotes, but not two (nor four) double-quotes. Nope, echo "^"" & echo 1 outputs "^"", and not """.
I am having difficulty in inserting the double quotes in my final string. Indeed, how can we get something as simple as echo """ & echo 1 to work? I am trying to execute the following command: cmd /c bcp 'select From 1' queryout C:\table1.txt -w -t '' -r\r -T -S -E. So what escapes " within quotes for argument passing? While ^ will work outside of quotes (easily proven via echo ^" & echo 1), it does not escape quotes within quotes. This proves that \ has failed to escape ". In the output, we do not see & 1234 interpreted as part of the string.
If \ fails to escape the following ", that following " will close the string and & 1234 will not be interpreted as part of the string. If \ does escape the following ", the opening " will not be closed and the chars & 1234 will be interpreted as part of the string. This is because the opening " has not been closed, and thus everything after it is interpreted as a string, including the special char &. ( & is a special char in cmd, left & right means run left then run right.) We can see that both echo "" and echo 1 are run successfully. (Also, in that case, you wouldn't use the quotes around the placeholder.)Īnother way that would be easier than the shell shenanigans above would be to pass the string through an environment variable or a file, if that's supported by the scheduler.In cmd, \ does not escape ". The scheduler would just need to have some smarts to explicitly pass script.py, -job-output and the job output as distinct arguments. If the scheduler was able to launch that command directly, without involving the shell, we wouldn't need to care about the shell's syntax. Or without nesting the here-doc in the command substitution: exec 9<<'END_OF_JOB_OUTPUT' However, since the data goes through a command substitution here, any trailing newlines in it are lost.
#CMD C QUOTES FULL#
To make long story short I will say that I need to call program by CMD and with full path to applicationso it lookes like this:cmd /c 'C:Program Filesargumentator.exe' argument with space (4 arguments. You could change the here-doc separator to any other string, one that's unlikely to appear in the output. HelloIm trying to invoke console program with parameter containing spaces (as one parameter). though sh -c), after doing a simple text replacement of is replaced by anything that's not END_OF_JOB_OUTPUT barring parsing bugs in the shell related to the here-doc inside a command substitution. The type cmd quoting surrounds the string by double quotes and. I need this to be put into a 'runas' statement, necessitating additional quotes. It may depend on the whim of the programmer of the application: check its documentation. & Program -ini 'C:ProgramProgram.ini' enforce 'L'. If that command line is preprocessed by the scheduler and it then sends it to a shell for execution (e.g. Here is the command I have: cmd /T:1F /k cd 'L' & cd.
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