use more portable 'killall' syntax
use more portable 'killall' syntax

jar1karp/rstudio,jrnold/rstudio,JanMarvin/rstudio,jar1karp/rstudio,jrnold/rstudio,jar1karp/rstudio,jrnold/rstudio,jar1karp/rstudio,jrnold/rstudio,JanMarvin/rstudio,jrnold/rstudio,jrnold/rstudio,jrnold/rstudio,jar1karp/rstudio,JanMarvin/rstudio,jar1karp/rstudio,JanMarvin/rstudio,jrnold/rstudio,jar1karp/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,jrnold/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,jar1karp/rstudio,jar1karp/rstudio