gistfile1.txt

print ip of eth0
ip a s eth0 | sed -nr 's!.*inet ([^/]+)/.*!\1!p'

print groups
cut -d: -f1 /etc/group | sort

find external ip address
curl http://canihazip.com/s && echo 

load of server/mem/disk
echo "DISK:";df  -Pl | grep -v "Filesystem" | awk '{print $5,$6}' ; echo "MEM:" ; free -mto | awk '{ print $1,$2,$3,$4 }'; echo "CPU:"; top -b -d1 -n1 | grep Cpu |  awk '{print $2,$3,$4,$5,$6,$7,$8,$9}';echo "LOAD:"; cat /proc/loadavg | awk '{print $1,$2,$3}'

apache log parser
sed 's^\[.*\]^^g' error.log | sed 's^\, referer: [^\n]*^^g' | sort | uniq -c | sort -n

print paths
echo $PATH | tr -s ':' '\n'

print no blank lines or comments
awk 'NF && ! /^[[:space:]]*#/'