How do I start a ruby/gem program?

Question

I have installed taskjuggler (gem install taskjuggler), but now I have no idea how to start it...

$ taskjuggler
taskjuggler: command not found

$ gem taskjuggler
ERROR:  While executing gem ... (RuntimeError)
    Unknown command taskjuggler

this one was on the taskjuggler page, with no explanation:

$ gem "taskjuggler", "~> 3.2.0"
ERROR:  While executing gem ... (RuntimeError)
Unknown command taskjuggler,

Also, the installation page tells nothing about how to run it.

How do I run this program?

--update:

$PATH 
bash: /usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games: No such file or directory

Does this work? http://askubuntu.com/questions/30234/installed-ruby-1-9-2-but-new-gems-wont-create-scripts-into-usr-bin — jrg, Jun 06 '12 at 20:02
Not.. the behavior is the same. By the way, which of the 3 commands I'm trying is the correct one to run the app? — The Student, Jun 06 '12 at 21:45
Is this gem meant to be a binary executable or is it meant to be used as `require gemname` in other ruby scripts? — nikhil, Jun 07 '12 at 10:44

score 3 · Answer 1 · answered Jun 07 '12 at 10:48

3

It might sound rude but try reading the manual for that gem first. The usage for the gem is

tj3 --version

answered Jun 07 '12 at 10:48

nikhil

This command line shows the version, ok, but how do I start it? I see no explicit topic in the manual about starting, the topic "your first project" make it looks like you have to program a software to create a project, but on the screenshot I saw a graphical application, how do I start that graphical application? – The Student Jun 11 '12 at 12:49
The command line `tj3` alone gives me `Error: You must provide at least one .tjp file`, and an empty `.tjp` file shows `Error: Unexpected token '' found. Expecting one of 'include', 'macro', 'project'`. Can't I start a new empty project? – The Student Jun 11 '12 at 12:51
can you tell me where you saw your screenshot? – nikhil Jun 11 '12 at 13:23
Try following chap 4 in the manual. It tells you how to create your first project. – nikhil Jun 11 '12 at 13:25

1 Answers1