You can add more global options to customize your R environment. R_PROFILE_USER = $/testdump', TRUE)) # Post-mortem debugging facilities Renviron R_HOME_USER = /path/to/your/r/directory Lines in the Renviron file should be either comment lines starting with # or lines of the form name=value.

You may disable loading environment files with -no-environ The most important variables can be found on Environment Variables R Documentation. Renviron in the current working directory if it exists, or ~/.Renviron otherwise. The name of the user file is specified by R_ENVIRON_USER. The name of the site file is controlled by the Environment variables R_ENVIRON if it exists, and defaults to /etc/R/Renviron. R first loads site and user environment variable files. Please refer to Initialization at Start of an R Session to get a detailed understanding of startup process. Whenever R starts, its configuration is controlled by several files. Opening the R GUI will set R's working directory to $HOME, unless explicitly defined in your configuration files (.

Running R from the command line will set R's working directory to the current directory.

Add alias R='R -quiet' to a startup file to use this behaviour by default.

The -quiet option can be used to start R without a verbose startup message.

You can load image with the load.image(image.RData) command at any time of your session. You can manually save the workspace at any time in the session with the save.image(image.RData) command, save as many images as you want (eg: image1.RData, image2.RData). RData format and will be automatically reloaded the next time R is started.

The workspace is your current working environment and include any user-defined objects, functions. When closing the session, you will be prompted as follows: Run ?Startup to read the documentation about system file configuration, help() for the on-line help, help.start() for the HTML browser interface to help, demo() for some demos and q() to close the session and quit.

site refers to system-wide in R Documentation.

Once in your R session, the prompt will change to > Note that some shells use the lowercase r command to repeat the last entered command.

Make sure to use a capital 'R' for the command.

Install r package linux