
Hi there, I used to run R 2.10 on Ubunutu 10.04, and tried to install R 2.11 from the source at the same time.It seems that doing the second installation, I have messed up with some files or system paths, resulting in not being able to use either version of R on my system.
I get the following message in terminal, whenever I try to run R now:

/usr/local/bin/R: line 227: /usr/local/lib/R/etc/ldpaths: No such file or directory/usr/local/bin/R: line 250: /usr/local/lib/R/bin/exec/R: No such file or directory/usr/local/bin/R: line 250: exec: /usr/local/lib/R/bin/exec/R: cannot execute: No such file or directory
I've tried to re-install R using apt-get doing:

sudo apt-get updatesudo apt-get remove r-base sudo apt-get autoremove sudo apt-get install r-base
Although the installation seems to be successful, I get the same error above trying to run R.Any suggestions how I can clean up all the leftovers from the previous two installations, and get back to the r-base available in repository? Thanks,Alireza 		 	   		  
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