Month: December 2011

I installed the full Cygwin 1.7 package on Windows 7. When I try to start Apache server following the linux style by running command
$ /usr/sbin/apachectl2 start
I got “Bad system call” error.

After some web search and trial and error, I finally got it work. Below are the steps that I’ve tried. Not sure whether all are necessary though.

Step 1: right click the Cygwin terminal and select “Run as adminstrator”

Step 2: create correct user and group info. Not sure whether this step is necessary.
$ mkpasswd.exe -l
$ mkgroup.exe -l


Step 3: configure server by running command
$ cygserver-config

Step 4: start cygserver
$ net start cygserver

Step 5: start apache
$ /usr/sbin/apachectl2 start

Step 1, install rpm tools
[sourcecode]yum install rpmdevtools rpmlint[/sourcecode]

Step 2, set up working directory
[sourcecode]rpmdev-setuptree[/sourcecode]

Step 3, create and edit the spec file
[sourcecode]
cd rpmbuild/SPECS
rpmdev-newspec
[/sourcecode]

Miscellaneous commands:

show environment variables
[sourcecode]rpm –showrc[/sourcecode]
show specific variable
[sourcecode]rpm –eval %_usr[/sourcecode]

Procedures to simulate RPM building with Mock
– Build source rpm
[sourcecode]
rpmbuild -bs SPECS/myproject.spec
[/sourcecode]

– Mock the build, i.e., testing the build in an isolated building environment simulating a specific platform (Redhat or Fedora etc.)
[sourcecode]
mock -r platform_name SRPMS/myproject.src.rpm
[/sourcecode]

– If it’s a multiple-project task, mock install the first project first, and then mock build the 2nd, i.e.,
[sourcecode]
mock -r platform_name –install /mock_path/myproject.rpm
mock -r platform_name SRPMS/myproject2.src.rpm
[/sourcecode]

See this blog

To install/ register a JVM use the following
/usr/sbin/alternatives --install "/usr/bin/java" "java" "/usr/java/default/bin/java" 2
/usr/sbin/alternatives --install "/usr/bin/javac" "javac" "/usr/java/default/bin/javac" 2

And to configure systemwide changes use
/usr/sbin/alternatives --configure java
/usr/sbin/alternatives --configure javac