As @dbenham notes, “[i]f a command is parsed after EXIT /B, within the same command block, then the problem manifests, even though the subsequent command never executes”. In this particular case the body of the IF statement is basically evaluated as (echo first if) & (exit /b 1) & (if “” == “” (echo second … Read more
You might think you could do something like the following, but it won’t work. (nmake & call set myError=%%errorlevel%%) | tee output.txt The problem lies in the mechanism by which Windows pipes work. Each side of the pipe is executed in it’s own CMD shell. So any environment variable you set there will disappear once … Read more
Taken from client/mysqldump.c in MySQL 5.1.59: #define EX_USAGE 1 #define EX_MYSQLERR 2 #define EX_CONSCHECK 3 #define EX_EOM 4 #define EX_EOF 5 /* ferror for output file was got */ #define EX_ILLEGAL_TABLE 6 Skimming through the source, EX_MYSQLERR seems to be used mostly for errors from the server, but also in case malloc fails. CONSCHECK seems … Read more
By using $() you are (effectively) creating a subshell. Thus the PIPESTATUS instance you need to look at is only available inside your subshell (i.e. inside the $()), since environment variables do not propagate from child to parent processes. You could do something like this: OUT=$( wget -q “http://budueba.com/net” | tee -a “file.txt”; exit ${PIPESTATUS[0]} … Read more
From the ntstatus.h SDK header file: // // MessageId: STATUS_DLL_NOT_FOUND // // MessageText: // // The program can’t start because %hs is missing from your computer. // Try reinstalling the program to fix this problem. // #define STATUS_DLL_NOT_FOUND ((NTSTATUS)0xC0000135L) // winnt The “try reinstalling the program” advice is solid, it is however up to you … Read more
It turns out that a directory had an ! in its name and eclipse had a problem with that. Once I switched the directory (from Desktop which is located in the user directory which had ! in it to C:/ ) everything worked fine. (look at the Djava.class.path in the image located in my the … Read more
I suggest you instantiate a Queue.Queue before starting the thread, and pass it as one of the thread’s args: before the thread finishes, it .puts the result on the queue it received as an argument. The parent can .get or .get_nowait it at will. Queues are generally the best way to arrange thread synchronization and … Read more
Upon executing a command as $(command) allows the output of the command to replace itself. When you say: a=$(false) # false fails; the output of false is stored in the variable a the output produced by the command false is stored in the variable a. Moreover, the exit code is the same as produced by … Read more