Installing Cutter on Redhat

How to install ffmpeg on rhel7

You can install ffmpeg on your rhel7 server using RPM.

sudo yum install -y https://download1.rpmfusion.org/free/el/rpmfusion-free-release-7.noarch.rpm
sudo yum install -y ffmpeg

After the install verify ffmpeg version

ffmpeg -version

For more information check the below link.

ffmpeg basic examples

A mess with different Perl installs

You should:

1. cleanup

   • clean (comment out) your ~/.profile from any unwanted paths, and so on
   • clean any new perl installation from your $HOME (move to safe place for sure)
   • in short, try return your environment into previous working state

2. relog, (logout, login)

3. repair your system perl. Thats mean,

   • read @Sam Varshavchik's answer
   • reinstall it from your distribution, using your package manager (5.10).
   • this step should overwrite the mess you caused.
   • test it !
   • don't continue until youre ensured, everything working right as before.

Lesson learned: never overwrite your system perl

4. learning

   • read thru perlbrew.pl
   • repeat previous step once again, especially with the
   • the homepage
   • http://perlbrew.pl/Perlbrew-and-Friends.html
   • https://metacpan.org/pod/App::perlbrew
   • https://metacpan.org/pod/perlbrew

5. installing perlbrew

   • run the installation command \wget -O - http://install.perlbrew.pl | bash
   • should finished without errors
   • follow the instructions how to modify your startup file e.g. ~/.profile or such... (you need to add one line to the end)
   • check your ~/perl5/perlbrew/bin should contain prelbrew and patchperl

6. relog

7. setup new perl, run

   • perlbrew init #init environment
   • perlbrew available #show what perl you can install
   • perlbrew install 5.20.0 #will take few minutes - depends on your system speed
   • perlbrew install-cpanm
   • perlbrew list #check
   • perlbrew switch perl-5.20.0 #activate newly installed perl 5.20

Check your installation

• in the ~/perl5/perlbrew/bin you should have 3 scripts: prelbrew , patchperl , cpanm
• perl -v should return 5.20
• type cpanm - should return ~/perl5/perlbrew/bin/cpanm

You're done.

8. CPAN modules

You can install new modules with cpanm, like:

• applications

• cpanm cpan-outdated
• cpanm App::Ack
• cpanm Unicode::Tussle
• cpanm Perl::Tidy
• cpanm Perl::Critic

• collections

• cpanm Task::Moose
• cpanm Task::Plack
• cpanm Task::Unicode

• modules

• cpanm Path::Tiny
• cpanm Try::Tiny
• cpanm JSON
• cpanm YAML
• etc...

Check the ~/perl5/perlbrew/perls/perl-5.20.0/bin/ for new commands

You will need update your own perl script's shebang line to

#!/usr/bin/env perl

I hope don't forget anything, maybe other more experienced perl-gurus will add/edit/correct more.

Anyway, in the reality the steps 5,6,7 are much easier as sounds (by reading this) and could be done in few minutes.

Error: gdal-config not found while installing R dependent packages whereas gdal is installed

You need the -dev package with headers and shared library links for development besides the normal package for deployment. Two different use cases as far as the distro is concerned.

On my distribution:

edd@max:/tmp$ dpkg -l | grep gdal | cut -c-72
ii  libgdal1-1.7.0                                1.7.3-6ubuntu3        
ii  libgdal1-dev                                  1.7.3-6ubuntu3        
edd@max:/tmp$ 

and R CMD INSTALL rgdal_0.7-8.tar.gz works just fine as you would expect from a CRAN package given all the build-time checks at CRAN.

Update late 2016: As @JoshO'Brien points out in the comment

Minor update: Here in 2016, running Ubuntu 14.04.2, libgdal1h seems to
have replaced libgdal1(though libgdal1-dev is still needed). At least
I get an error to that effect when I attempted to apt-get install libgdal1

For Ubuntu 16.04 the corresponding line would be

sudo apt-get install libgdal1i

Such renaming of upstream libraries is common; something such as apt-cache search libgdal can help locate the current package names. The important key though is that the "abstract" development package libgdal-dev is all that is needed to build as it pulls the "concrete" current run-time package (here: libgdal1i) in via a dependency.

How to I get Python 2.x and 3.x to co-exist?

I'm not sure I understand your question, but I'll take a shot. I'm also assuming you're on Windows.

It's simple -- just install both. They will install to different directories, create different start menu folders, etc. I'd also reccomend PyWin32 for the PythonWin editor installed in both 2.7 and 3.2,

• http://sourceforge.net/projects/pywin32/files/pywin32/Build216/pywin32-216.1.win32-py3.2.exe/download &
• http://sourceforge.net/projects/pywin32/files/pywin32/Build216/pywin32-216.win32-py2.7.exe/download

If you mean how do you write one script that works with either Python 2 or Python 3, look at http://docs.python.org/library/2to3.html

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