Ruby, Rails, OSX and Linux fun

 
#!/bin/bash
 
SERVER="mydomain.com"
EMAIL_TO="your_email@gmail.com"
EMAIL_FROM="amin@mydomain.com"
 
# logged in users and what are they running
WHO=`w`
 
# processor stats
MPSTAT=`mpstat`
 
# virtual memory stats
VMSTAT=`vmstat`
 
# Top 20 memory hog applications
PS_MEM=`ps -A -o pid,pcpu,pmem,start_time,state,time,comm | perl -e '($_ = join "",<>) =~ s/(\t)/     /g; print;' |sort -g -k 3 -r | head -20`
 
# Top 10 CPU usage applications
PS_CPU=`ps -A -o pid,pcpu,pmem,start_time,state,time,comm | perl -e '($_ = join "",<>) =~ s/(\t)/     /g; print;' | sort -g -k 2 -r | head -10`
 
#  memory usage in MB
FREE=`free -m`
 
PROCINFO=`procinfo`
 
# iptables status
IPTABLES=`iptables -nL`
 
# established connections
NETSTAT=`netstat -na |grep -i esta |grep -v 127.0.0.1 |sort -n -t. -k2`
 
# line divider
DL="=================================================================================="
 
FINAL="${DL} 
`date`
${DL}
${SERVER} 
${DL} 
${WHO} 
${DL}
${FREE}
${DL}
${MPSTAT}
${DL}
${VMSTAT} 
${DL}
${PROCINFO}
${DL} 
Top 10 CPU processes
${PS_CPU} 
${DL}
Top 20 Memory processes
${PS_MEM} 
${DL}
${IPTABLES}
${DL}
${NETSTAT}
${DL}
"
 
echo "${FINAL}" | 
  perl -e '($_ = join "",<>) =~ s/(\t)/     /g; print;' | 
  sendEmail -f "${EMAIL_FROM}" -u "${SERVER} comparator" -t ${EMAIL_TO}