10-27-2008
How to create file on Linux using environment variable in the dirpath
Hi all,
I am running a Java program on a Linux server in which I read in a base directory path from the *.properties file. During processing, I build a unique file name and create a file to save data, concatenating the directory path and the file name. Works fine, except that I now need to modify this code to accept an environment variable as part of the directory path (previously it was uniquely specified). I've experimented with various ways of quoting - no luck. I'm sure there's a simple syntax to permit this, but so far I've been unable to find it.
File creation statement looks like this:
File uploadFile = new File(baseDir + newFileName);
where baseDir has been read in from the properties file and is equal to
$MYFILEDIR/reports/
The file creation is failing.
Can anyone tell me what syntax can I use in the input that would allow me to create the file in the expected directory? Thanks so much.
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LEARN ABOUT MOJAVE
jstack
jstack(1) General Commands Manual jstack(1)
NAME
jstack - stack trace
SYNOPSIS
jstack [ option ] pid
jstack [ option ] executable core
jstack [ option ] [server-id@]remote-hostname-or-IP
DESCRIPTION
jstack prints Java stack traces of Java threads for a given Java process or core file or a remote debug server. For each Java frame, the
full class name, method name, 'bci' (byte code index) and line number, if available, are printed. With the -m option, jstack prints both
Java and native frames of all threads along with the 'pc' (program counter). For each native frame, the closest native symbol to 'pc', if
available, is printed. C++ mangled names are not demangled. To demangle C++ names, the output of this command may be piped to c++filt.
NOTE - This utility is unsupported and may or may not be available in future versions of the J2SE SDK. jstack is not currently available
on Windows platforms or on the Linux Itanium platform.
PARAMETERS
Options are mutually exclusive. Option, if used, should follow immediately after the command name.
pid process id for which the stacktrace is to be printed. The process must be a Java process. To get a list of Java processes
running on a machine, jps may be used.
executable Java executable from which the core dump was produced.
core core file for which the stack trace is to be printed.
remote-hostname-or-IP
remote debug server's (see jsadebugd) hostname or IP address.
server-id optional unique id, if multiple debug servers are running on the same remote host.
OPTIONS
-m prints mixed mode (both Java and native C/C++ frames) stack trace.
-h Prints a help message.
-help Prints a help message.
SEE ALSO
pstack(1) c++filt(1) jps(1) jsadebugd(1)
KNOWN BUGS
Mixed mode stack trace, the -m option, does not work with the remote debug server.
13 June 2004 jstack(1)