On 12/01/17 16:33, Henrik Bengtsson wrote: <SNIP>
FYI, the /proc is there because Unix has something called the "proc filesystem (procfs; https://en.wikipedia.org/wiki/Procfs) is a special filesystem in Unix-like operating systems that presents information about processes and other system information in a hierarchical file-like structure". For instance, you can query the uptime of the machine by reading from /proc/uptime: $ cat /proc/uptime 332826.96 661438.10 $ cat /proc/uptime 332871.40 661568.50 You can get all IDs (PIDs) of all processes currently running: $ ls /proc/ | grep -E '^[0-9]+$' and for each process you there are multiple attributes mapped as files, e.g. if I start R as: $ R --args -e "message('hello there')" then I can query that process as: $ pid=$(pidof R) $ echo $pid 26323 $ cat /proc/26323/cmdline /usr/lib/R/bin/exec/R--args-emessage('hello there') Unix is neat
Indeed. Couldn't agree more. Thanks for the insight. <SNIP> cheers, Rolf -- Technical Editor ANZJS Department of Statistics University of Auckland Phone: +64-9-373-7599 ext. 88276 ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
