UNIX for Dummies Questions & Answers

if [ $# -eq 3 ]; then
        if [ -e $3 ]; then
            tail +$1 $3 | head -n $2
         else
            echo "$0: Error opening file $3"
            exit 2
        fi
else
        echo "Missing arguments!"
fi

tail: cannot open `+3' for reading: No such file or directory
==> /home/chandran/JONAS/LoveSick <==
It's every day, it's every night
O-oh, call the the doctor
I'm love sick

sed -n '3,5p' filename

% min=3 max=5
% sed -n $min,${max}p infile

% cat display_range.sh 
#!/bin/sh

sed -n "$1,${2}p" "$3"
% chmod u+x display_range.sh 
% print -l {1..10} > infile
% cat infile 
1
2
3
4
5
6
7
8
9
10
% ./display_range.sh 3 7 infile 
3
4
5
6
7

if [ $# -eq 3 ]; then
        if [ -e $3 ]; then
             sed -n "$1, ${2}p" "$3"
                # tail +$1 $3 | head -n $2
         else
            echo "$0: Error opening file $3"
            exit 2
        fi
else
        echo "Missing arguments!"
fi