1:
	grep -v ^# /etc/hosts | sed /loghost/d > /tmp/myout.$$

2:
	sed 3d /tmp/myout.$$

3:
	grep -v ^# /etc/hosts | sed -n 3,7p 

4:
	let CNT=1
	grep -v ^# /etc/hosts | 
	while read LINE
	do
		if (( $CNT % 2 ))
		then
			NEW=$LINE
		else
			echo $NEW $LINE
		fi
		let CNT=$CNT+1
	done

5:
	grep -v ^# /etc/hosts | 
	while read LINE
	do
		if [[ -n $(print $LINE | grep loghost) ]]
		then
			myip=$(print $LINE | awk '{print $1}')
		fi
	done
	print $myip

    OR (quicker - uses break)

	grep -v ^# /etc/hosts | 
	while read LINE
	do
		if [[ -n $(print $LINE | grep loghost) ]]
		then
			myip=$(print $LINE | awk '{print $1}')
			break
		fi
	done
	print $myip

6:
	CNT=1
	OUTFILE=/tmp/vmstat.$$

	vmstat 1 10 > $OUTFILE
	MAX_NF=`sed -n 3p $OUTFILE | awk '{print NF}'`

	print "Field"
	print "    max  min  sum  average"
	while [ $CNT -le $MAX_NF ]
	do

		print "$(awk '/swap/ {printf "%6s", $'$CNT'}' $OUTFILE):"

		cat $OUTFILE | grep -v procs | grep -v 'r b w' | \
			awk '{input = $'$CNT'} \
			{if(input >= max) max = input} \
			{if(input <= min) min = input} \
			{sum += input} END \
			{printf "   %6d     %6d     %6d     %8.2f\n", max, min, sum, sum/NR}'
		CNT=`expr $CNT + 1`
	done

7:
	ifconfig -a | grep -v ether \
		| awk '$0 ~ /:/ {printf "%s ",$1} \
		$0 ~ /inet/ {printf "%s \n",$2}' 

	To look for a specific IP on a HOST

	THISIP=10.1.1.22
	ifconfig -a | grep -v ether \
		| awk '$0 ~ /:/ {printf "%s ",$1} \
		$0 ~ /inet/ {printf "%s \n",$2}' \
		| awk '/'$THISIP'/ {print $1}' \

Extras

A
	cat myfile | awk -F: '{print substr($0, index($0,$11)) }' 
	cat myfile | awk -F: '{for (i=11;i<=NF;i++) printf("%s:", $i)}{print ""}'

B
	cat myfile | sed 's/^ *//;s/ *$//g' 

C
	cat myfile | sed 's/ * //g'
	cat myfile | tr -d ' '