CNT 5605 - 2019 Fall
/proc parsing assignment via Bash

Your assignment is to create a bash script called "procparser.bash" that sums the total heap size used by processes on a system (obviously, to successfully run this on all processes, the process would need a uid of 0.) 

bash-4.2$ ./procparser.bash
Usable result from /proc/116543/maps.
Usable result from /proc/121212/maps.
Usable result from /proc/122697/maps.
Usable result from /proc/134525/maps.
Usable result from /proc/135594/maps.
Processes read : 5, total heap used = 7081984, average heap size = 1416396.75

Please run your code on both your LFS and your Debian installations, and to the extent that you are able to do so, also on a linprog machine.

For example, on my Funtoo machine in my office, here's what I would get as an ordinary user: 

procparser $ ./procparser.bash
Usable result from /proc/26007/maps.
Usable result from /proc/26027/maps.
Usable result from /proc/26043/maps.
Usable result from /proc/26051/maps.
Usable result from /proc/26054/maps.
Usable result from /proc/26055/maps.
Usable result from /proc/26065/maps.
Usable result from /proc/26070/maps.
Usable result from /proc/26073/maps.
Usable result from /proc/26079/maps.
Usable result from /proc/26087/maps.
Usable result from /proc/26091/maps.
Usable result from /proc/26095/maps.
Usable result from /proc/26100/maps.
Usable result from /proc/26122/maps.
Usable result from /proc/26124/maps.
Usable result from /proc/26129/maps.
Usable result from /proc/26131/maps.
Usable result from /proc/26136/maps.
Usable result from /proc/26149/maps.
Usable result from /proc/26154/maps.
Usable result from /proc/26158/maps.
Usable result from /proc/26161/maps.
Usable result from /proc/26230/maps.
Usable result from /proc/26235/maps.
Usable result from /proc/26241/maps.
Usable result from /proc/26243/maps.
Usable result from /proc/26244/maps.
Usable result from /proc/26272/maps.
Usable result from /proc/26278/maps.
Usable result from /proc/26340/maps.
Usable result from /proc/26352/maps.
Usable result from /proc/26647/maps.
Usable result from /proc/28791/maps.
Usable result from /proc/28936/maps.
Usable result from /proc/29512/maps.
Usable result from /proc/29533/maps.
Usable result from /proc/29930/maps.
Usable result from /proc/29943/maps.
Usable result from /proc/29945/maps.
Usable result from /proc/29959/maps.
Usable result from /proc/30225/maps.
Usable result from /proc/30231/maps.
Usable result from /proc/30257/maps.
Usable result from /proc/30270/maps.
Usable result from /proc/30302/maps.
Processes read : 46, total heap used = 145764352, average heap size = 3168790.25

If I run this as root, I get more even more information: 

langley@localhost ~/procparser $ su - root
Password: 
localhost procparser # ./procparser.bash
Usable result from /proc/1/maps.
Usable result from /proc/24757/maps.
Usable result from /proc/25738/maps.
Usable result from /proc/25780/maps.
Usable result from /proc/25810/maps.
Usable result from /proc/25811/maps.
Usable result from /proc/25854/maps.
Usable result from /proc/25923/maps.
Usable result from /proc/25924/maps.
Usable result from /proc/25925/maps.
Usable result from /proc/25926/maps.
Usable result from /proc/25928/maps.
Usable result from /proc/25984/maps.
Usable result from /proc/25988/maps.
Usable result from /proc/25990/maps.
Usable result from /proc/25996/maps.
Usable result from /proc/26007/maps.
Usable result from /proc/26027/maps.
Usable result from /proc/26043/maps.
Usable result from /proc/26044/maps.
Usable result from /proc/26051/maps.
Usable result from /proc/26054/maps.
Usable result from /proc/26055/maps.
Usable result from /proc/26065/maps.
Usable result from /proc/26070/maps.
Usable result from /proc/26073/maps.
Usable result from /proc/26079/maps.
Usable result from /proc/26083/maps.
Usable result from /proc/26087/maps.
Usable result from /proc/26091/maps.
Usable result from /proc/26095/maps.
Usable result from /proc/26100/maps.
Usable result from /proc/26122/maps.
Usable result from /proc/26124/maps.
Usable result from /proc/26129/maps.
Usable result from /proc/26131/maps.
Usable result from /proc/26136/maps.
Usable result from /proc/26149/maps.
Usable result from /proc/26154/maps.
Usable result from /proc/26158/maps.
Usable result from /proc/26161/maps.
Usable result from /proc/26168/maps.
Usable result from /proc/26180/maps.
Usable result from /proc/26230/maps.
Usable result from /proc/26235/maps.
Usable result from /proc/26241/maps.
Usable result from /proc/26243/maps.
Usable result from /proc/26244/maps.
Usable result from /proc/26272/maps.
Usable result from /proc/26278/maps.
Usable result from /proc/26340/maps.
Usable result from /proc/26352/maps.
Usable result from /proc/26647/maps.
Usable result from /proc/28791/maps.
Usable result from /proc/28936/maps.
Usable result from /proc/29512/maps.
Usable result from /proc/29533/maps.
Usable result from /proc/29535/maps.
Usable result from /proc/29930/maps.
Usable result from /proc/29943/maps.
Usable result from /proc/29945/maps.
Usable result from /proc/29959/maps.
Usable result from /proc/30225/maps.
Usable result from /proc/30231/maps.
Usable result from /proc/30257/maps.
Usable result from /proc/30270/maps.
Usable result from /proc/30303/maps.
Usable result from /proc/30306/maps.
Usable result from /proc/30309/maps.
Processes read : 69, total heap used = 179240960, average heap size = 2597695.00

Submission: Please email me your code.