linux-mint

I am a Linux Mint 15 User. i wanted to write simple program in C. Below is my code.(hw.c) #include<stdio.h> #include<conio.h> int main() { printf("Hello World"); } But, when i try to compile it with gcc gcc -o hw hw.c it gives me an error hw.c:1:18: fatal error: stdio.h: No such file or directory compilation terminated. I googled and found some solutions which say to install build-essential and tried to install it sudo apt-get install build-essintial but it gives an error again. The error is Some packages could not be installed. This may mean that you have requested an impossible situation or

I just updated to R (3.4.1 "Single Candle") on my Linux Mint 18.1 Cinnamon machine and I attempted to install a package. R returned the following: > install.packages('ggplot2') Installing package into ‘/usr/local/lib/R/site-library’ (as ‘lib’ is unspecified) Warning in install.packages("ggplot2") : 'lib = "/usr/local/lib/R/site-library"' is not writable Would you like to use a personal library instead? (y/n) y Would you like to create a personal library NA to install packages into? (y/n) y Error in install.packages("ggplot2") : unable to create ‘NA’ I have encountered the 'lib not writable'

I asked a related question: check if a program is installed But am refraining from answering until I've tested the solutions for myself on all three systems. I can get pandoc to work from within R on a windows machine but on linux I get this error/response for each method from the R terminal: 1: > system('pandoc -v') sh: 1: pandoc: not found 2: > myPaths <- c("pandoc", + "~/.cabal/bin/pandoc", + "~/Library/Haskell/bin/pandoc", + "C:\\PROGRA~1\\Pandoc\\bin\\pandoc") > Sys.which(myPaths) pandoc ~/.cabal/bin/pandoc "" "/home/tyler/.cabal/bin/pandoc" ~/Library/Haskell/bin/pandoc C:\\PROGRA~1\

I am using Linux Mint Cinnamon 14. I have set the $JAVA_HOME and $PATH environment variables in ~/.profile as follows: export JAVA_HOME=/home/aqeel/development/jdk/jdk1.6.0_35 export PATH=/home/aqeel/development/jdk/jdk1.6.0_35/bin:$PATH I then did source ~/.profile to make the proper changes. When I execute java -version command to check the active java version, it shows the default (already installed open-jdk) java version. How can I override the default open-jdk with the one I downloaded? UPDATE: which java says /usr/bin/java $JAVA_HOME/bin/java -version says 'Permission Denied' sudo $JAVA