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% 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...

Just use sed:

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

sed -n '3,5p' filename

Hi.

You missed some spaces...


#!/bin/bash
x=5
while [ $x -ge 1 ] # <-- space after [ and before ]
do
echo $x
x=`expr $x - 1`
echo ""
done
echo ""
Also,...

How about:

echo $a/$b | bc -l

I had no idea that this would work:


$ a=1
$ b=2
$ echo $[a+b]
3

Weird, but I learnt something new!

Not sure that this will work:

4) echo `$[a/b]| bc -l `;;


Might need to be more...