Install perl really fast

Fastest way to install perl:

perlbrew install -j 5 --notest perl-5.16.3

Only takes about 2 mins.

Thanks perlbrew.

Cannot install Java JDK: semicolon found in selected path

There's no semi colon in the install path. But you still get the error:

        semicolon found in selected path

Solution is to move the install .exe to c:\ and run it again.

Possibly with command line switches: /v"/L c:\install.log"

(Search results show that this same issue has existed for 11 years!)

How to install ruby, rake, rubygems

https://www.ruby-lang.org/en/documentation/installation/

For ruby, tried:

• https://rvm.io/ - wouldn't work on my Suse setup
• https://github.com/sstephenson/rbenv#readme - worked on Suse. Promising, I like.
• https://github.com/sstephenson/ruby-build#readme - doesn't work

For rubygems, tried:

• https://rubygems.org/pages/download - worked

For rake:

• It comes with ruby

Now learn Ruby:
https://github.com/neo/ruby_koans

Can't install recent Perl: too few arguments to function ‘dbmclose’

When I tried to install perl 5.16.2 or perl 5.20.0:

wget http://www.cpan.org/src/5.0/perl-5.20.0.tar.gz
tar -xpvzf perl-5.20.0.tar.gz
cd perl-5.20.0
sh Configure -Dprefix='/opt' -de
make
...
make[1]: Entering directory `/opt/dweb/home/shepwil/src/perl-5.20.0/ext/ODBM_File'
cp ODBM_File.pm ../../lib/ODBM_File.pm
Running Mkbootstrap for ODBM_File ()
chmod 644 ODBM_File.bs
../../miniperl "-I../../lib" "-I../../lib" ../../lib/ExtUtils/xsubpp -noprototypes -typemap ../../lib/ExtUtils/typemap -typemap typemap  ODBM_File.xs > ODBM_File.xsc && mv ODBM_File.xsc ODBM_File.c
cc -c   -fwrapv -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2   -DVERSION=\"1.12\" -DXS_VERSION=\"1.12\" -fPIC "-I../.."   ODBM_File.c
ODBM_File.xs: In function ‘XS_ODBM_File_DESTROY’:
ODBM_File.xs:128: error: too few arguments to function ‘dbmclose’
make[1]: *** [ODBM_File.o] Error 1
make[1]: Leaving directory `/opt/dweb/home/shepwil/src/perl-5.20.0/ext/ODBM_File'
Unsuccessful make(ext/ODBM_File): code=512 at make_ext.pl line 561.
make: *** [lib/auto/ODBM_File/ODBM_File.so] Error 25

The solution:

sudo diff /usr/include/dbm.h.patched /usr/include/dbm.h
62c62,63
> extern int    dbmclose __P((DBM *));
---
< /* extern int dbmclose __P((DBM *));*/
< extern int    dbmclose __P((void));

sudo cp usr/include/dbm.h.patched /usr/include/dbm.h

(source)

Windows "add or remove programs" list is empty

First of all, just wait for a few minutes. The list may appear after some time.

If still no luck:

• Highlight and copy the entire bolded text below: 
• cmd /c REGEDIT /E "%userprofile%\desktop\uninstall.txt "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ 
• Click on Start > Run and paste in the text you have just copied. Hit Enter. 
• A notepad document should appear on your desktop called uninstall or uninstall.txt 
• Open it to view the contents
• Look for the "UninstallString" values and copy those into the Start > Run box to uninstall programs

Thanks to tomshardware.co.uk

Install ruby gems

sudo yum -y install gcc ruby-devel rubygems
sudo gem install nokogiri

Linux package managers

• rpm
• yum
• apt-get
• aptitude
  

Install programs on linux in a local directory

No need for root access.

$ ./configure --prefix=/home/user/mypackages
$ make
$ make install