stevekm/session.md

## session.md

      
    Raw
  

              session.md
            
          
    The codes:
# system info
system("uname -srv", intern = TRUE)

# dir
system('pwd',intern=T)

# date time
system("date", intern = TRUE)

# R system info, packages, etc
sessionInfo()

# save session environment
save.image(compress = TRUE)
Example outputs:
# system info
system("uname -srv", intern = TRUE)
## [1] "Linux 2.6.32-642.4.2.el6.x86_64 #1 SMP Tue Aug 23 19:58:13 UTC 2016"

# date time
system("date", intern = TRUE)
## [1] "Tue Nov 29 19:44:08 EST 2016"

sessionInfo()
## R version 3.3.1 (2016-06-21)
## Platform: x86_64-redhat-linux-gnu (64-bit)
## Running under: CentOS release 6.8 (Final)
## 
## locale:
##  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
##  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
##  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
##  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
##  [9] LC_ADDRESS=C               LC_TELEPHONE=C            
## [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       
## 
## attached base packages:
## [1] stats     graphics  grDevices utils     datasets  methods   base     
## 
## loaded via a namespace (and not attached):
##  [1] magrittr_1.5    formatR_1.4     tools_3.3.1     htmltools_0.3.5
##  [5] yaml_2.1.13     Rcpp_0.12.6     stringi_1.1.1   rmarkdown_1.0  
##  [9] knitr_1.13      stringr_1.0.0   digest_0.6.10   evaluate_0.9

# save session environment
save.image(compress = TRUE)