Develop Reference

How to execute Carrot2 Document Clustering server

I downloaded the Carrot2 Document clustering server build 3.15.0 for Mac. The read me file says:
The DCS requires a Java Runtime Environment (JRE) version 1.7.0 or later. To
run the DCS, execute the 'dcs' script and point your browser at
http://localhost:8080 for further instructions.
Mac OS Sierra doesn't make it easy, but I got 1.8.0_112 installed.
The problem is that I don't know how to execute the 'dcs' script.
There are .cmd, .sh, .war, and .jar files. I wasn't sure which of those to work with. I thought .jar looked promising, so I followed some of this thread and tried this in a terminal window:
java -jar invoker.jar
I cd-ed to the correct directory, but it just says Provide main class, but I'm not sure what or where that is.
Can anybody provide instructions or a link to how to do this?

Use the dcs.sh (on Linux/Mac) and dcs.cmd (on Windows) to start the server. The scripts will set some extra options for the JVM and then start the DCS. In case of any problems, append the -v option to see diagnostic output.

Running a project with shell commands

I need to open a project which I think it is written in linux or need linux env for building it.
I use Win8 and I'mnot familiar with Linux env anymore.
Iin it's README file, it is written s.th like this:
HOW TO INSTALL
> tar xzvf DepOE-beta.tar.gz
> sh install-DepOE.sh
Two NLP tools are installed:
- DepPattern (dependency-based parser)
- Tree-Tagger (PoS tagger)
Pay attention: do not install the package in a directory whose name contain blank spaces!
HOW TO USE
depOE.sh <tagger> <lang> <file> [parser]
tagger=freeling, treetagger
language=gl, es, en, pt, fr
file=path of the input file
I opened it by Eclipse env which is integrated with Perl. but I couldnt open it.
what should I do??
please help me:(

since the usage file specifically says that you need to run
depOE.sh <tagger> <lang> <file> [parser]
I believe you will need some sort of UNIX shell to make it work. Moreover from the file tree you posted I believe you will also need a running Perl implementation on your machine. Please refer to http://slu.livejournal.com/17395.html for a tutorial on how to install Cygwin and Perl for Windows. Cygwin should give you some basic Linux/Unix/GNU tools for Windows environments and Perl obviously is a Perl interpreter for Windows.
However, I believe in your case the option to run a real Linux operating system in a virtual environment (if you want to keep your Windows installation untouched) is the best way to go. The fastest way (and a free option) would be to download VirtualBox from https://www.virtualbox.org and a Linux VM for instance with Ubuntu preinstalled from here http://virtualboxes.org/images/ubuntu/.

Unable to load library 'gs': libgs.so: cannot open shared object file: No such file or directory

I have installed ghostscript of 64 bit on my 64 bit linux machine. I am using ghost4j-0.5.0.jar to convert pdf files to tiff files. I have written a java program which will convert pdf files to tiff files. This is working perfectly fine on Windows but when i thought of moving this to linux machine i am getting the below error.
"Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'gs': libgs.so: cannot open shared object file: No such file or directory"
I checked lib folder and could not find libgs.so file in the lib folder. I am not sure where to get that file.
Can anyone please help me on this ?

I feel a little guilty posting this here since it is probably better served on ServerFault or one of the Linux boards and the question is over 6 months old but I had been banging my head against the wall all day and finally have found a solution to this problem and I figured someone else might benefit from this down the road.
Systems: Windows 7 and CentOS 6.5
Using: Ghostscript 9.14
A little backstory:
Like the OP I had been running a ghostscript program on Windows to convert PDFs to a series of images. This worked fine until I needed to switch over to Linux and run the program and about 5% of the PDFs I needed to convert came up with error cannot decode code stream. I realized that I was using a newer version of ghostscript on Windows. (9.14 on Windows compared to 8.70 on CentOS due to installing through yum).
I removed the old version with yum remove ghostscript. Next, I found the easiest way to install the newest version of Ghostscript is download from here and compile. Since I removed the previous version of ghostscript with yum I had to update the link in usr/bin to point to usr/local/bin/gs with ln -s /usr/local/bin/gs /usr/bin/gs. With everything in place, so I thought, I attempted to run my program and then bam, error!
Solving the problem:
So now I was getting the error:
Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'gs': libgs.so: cannot open shared object file: No such file or directory
I came across a post here that said to get the necessary libgs.so I needed to go back and rebuild the source as a shared library with the command make so. I did so and then I took the libgs.so.9.14 file under sobin directory in the ghostscript folder and copied it to /usr/lib. Under that directory I made a symbolic link to libgs.so using the command ln -s /usr/lib/libgs.so.9.14 /usr/lib/libgs.so.
Once that was done I needed to update my ld_library_path but found when I did so the change wasn't global so I found a Unix & Linux post on how to set the global lib path. Basically to do so you need to go to add a .conf file in /etc/ld.so.conf.d/ with the path to the file. I did so using vi /etc/ld.so.conf.d/libgs.conf and added /usr/lib/libgs.so to the file. Lastly I ran ldconfig so save the changes.
TLDR:
Download the latest version of Ghostscript from source: wget http://downloads.ghostscript.com/public/ghostscript-9.14.tar.gz
Unpack the tar: tar -xzf ghostscript-9.14.tar.gz
cd ghostscript-9.14
./configure
make <-- You might be able to skip and go to make so, I did it in this order so I will leave it like this.
make install
make so
If you removed a previous version with yum ln -s /usr/local/bin/gs /usr/bin/gs
cp ghostscript-9.14/sobin/libgs.so.9.14 /usr/lib
ln -s /usr/lib/libgs.so.9.14 /usr/lib/libgs.so
vi /etc/ld.so.conf.d/libgs.conf
In the new libgs.conf file: /usr/lib/libgs.so and save with esc, :, wq.
ldconfig and done.
Run your conversion program.
Hopefully this helped and wasn't too confusing. I'm not a linux expert (yet) so I may be doing a little more work than necessary with the above commands but I wanted to be thorough.

I just had this issue on a linux VM. I was able to solve it by installing ghostscript on the system. I just used the command:
sudo yum install ghostscript
Hope that helps!

make soinstall will create required libs along with executables as mentioned in https://www.ghostscript.com/doc/current/Install.htm#Shared_object

Trying to run a java application from a shell script on Ubuntu 10.04

My java program was written on a windows machine and I am trying to get it installed and running on a Ubuntu 10.04 machine. I have created a .tar.gz file with myProgram.jar in it as well as 5 supporting library .jar files in a lib folder. Where do I put these files? Do I need to extract it on the Linux machine to a usr/bin folder? Does the shell script go inside the tar.gz? I have read that if you write the shell script on a windows machine you can have issues once you move it to the Linux machine, so I am writing the shell script on the Linux machine using gedit. I am just not sure what to do next.
So far in my script I have,
#!/bin/bash
java -jar myProgram.jar
I am going to try and extract the tar.gz file to the usr/bin directory and see if it runs.
Any suggestions or help would be greatly appreciated.
Thanks in advance,
Ray

Your question is quite "broad" :). I hope you find the following useful.
Do not extract the files to /usr/bin. See e.g. http://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard on where and where not to put files on a *nix system.
Extract the jar's to e.g. /opt/yourProgram/*.
The shell script should be inside there too. Make sure its executable (i.e chmod 755 script.sh)
In your shell script add cd /opt/yourProgram to have the proper working directory for your program before you invoke java.
If you want this program to be started easily by everyone create a symbolic link in /usr/bin or better in /usr/local/bin pointing to your script. Do this as last step after everything else is working.
In your shell script you'll have to add the other jars to the classpath e.g.
java -cp lib/some.jar:lib/other.jar -jar myProgram.jar
or
java -cp lib/some.jar:lib/other.jar:myProgram.jar com.acme.ClassContainingMain
Recommended practice: Add set -e at the very beginning of your script
As you already mentioned it's considered harmful to edit a shell script using a windows editor. The reason is that the windows editor will encode line-breaks (i.e. you hit the Return key) differently. This will make bash puke :)

Im not too clear of what you are looking for.
The script that you have written should work absolutely fine if you have placed your script and myprogram.jar at the same level.
And also im not sure how your myprogram.jar is referring the dependent libraries. So can't comment on them. Best bet will be to place your script and all jars together and try running the script.

Using Ctags with Gvim on Windows

I'm using gvim as my main 'IDE' on windows 7 and I would like to use ctags to navigate through the code. I've downloaded it and ran based on this tutorial: http://www.techrepublic.com/article/configure-vi-for-java-application-development/5054618
ctags -f ~/.tags -R ~/myprojects/src $JAVA_HOME/src
I've then setup my vimrc with...
set tags=~/.tags
However when I do Ctrl+] on a keyword, it says it can not find the file which the tag is defined in. Shows the correct path except it misses out c:\ from the start so vim can't load it.
How can get it to give me the correct path?
I'm using the latest version of gvim and ctags.
Thanks

FWITW, I'm not entirely sold on the concept of keeping my tags in one location.
This part of the command call:
-f ~/.tags
Nor would I hard path to my current project. This part:
-R ~/myprojects/src
BTW, Windows doesn't have ~ so I don't think either of those would work (not sure if Vim will find ~, i.e. "home").
If I were you, I would cut my teeth on the simplest method until you get more comfortable with the Vim methods and ideals.
Easiest method:
Always let Vim know the "Current Directory" (making the assumption that you are not launching Vim via the command prompt). When you open a file always set the current directory by issuing the following command from normal mode:
:cd %:p:h
Generate a tag file in the current directory with the following command (from normal mode).
:!ctags -R .
Happy jumping.