Takes a snapshot of the world view (user, processes, RAM, CPU, networking) and stores it in a epoch-now-timestamped file

gen-worldview.sh

#!/bin/bash -e
#
# Takes a snapshot of the machine world view (incl. user info, 
# processes, memory, CPU, and networking) and stores it in a 
# epoch-now-timestamped file. Note that the machine could be a
# physical server, a VM or a container.
#
# Example:
#
#    $ ./gen-worldview.sh
#    $ cat 1475942566
#
###############################################################################

set -e
set -o pipefail

worldview=$(date +%s)
touch $worldview

# add real and effective user and group IDs:
printf "== USER\n" >> $worldview
id >> $worldview

# add processes:
printf "\n\n== PROCESSES\n" >> $worldview
ps auxf | cut -c -120 >> $worldview

# add memory stats: 
printf "\n\n== MEMORY\n" >> $worldview
free >> $worldview

# add CPU stats
printf "\n\n== CPU\n" >> $worldview
grep processor /proc/cpuinfo >> $worldview

# add networking stats
printf "\n\n== NETWORKING\n" >> $worldview
hostname >> $worldview
ip link >> $worldview