alternative peeking tool to head and tail: pick out a random 20 lines of a file, plus the first and last lines.

peek.bash

#!/bin/bash
# peek
# look at N random lines of datafile.csv
# usage: rand datafile.csv N
# 	 rand	$1	  $2



head -1 $1					#names row of $1

if [ -z $2 ] ; then				#IFNDEF
	shuf $1 | head -20
else
	shuf $1 | head -$2			#N=$2
fi


tail -1 $1