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Top Forums Shell Programming and Scripting How to read n number of lines from a file Post 302364057 by varsha on Thursday 22nd of October 2009 12:41:23 PM
Old 10-22-2009
Help!!

hi

i have shell scripting for finding the maximum number
now i want to find both maximum and minimum number

i attach the program and output and also file content


myfile(contents)

Code:
260
10
10
250
100
1
1
1
1
2
1
3
4
5
8
2.7
44
4
3
4
4
5
5
7
100
10
03
25
200
160
300
6000



program

Code:
#!/bin/bash
echo "Enter file name"
read file
echo "Enter the number"
read n
awk -v count=$n 'BEGIN{ i=0; } {k = $1; for (j=1; j<count; j++) {getline; if ( $1 > k ) k = $1 } print "count" i; i++; print "biggest no is " k;} END {print "total count is " i}' $file > output

output

Code:
Enter file name
myfile
Enter the number
4

vi output
count0
biggest no is 260
count1
biggest no is 100
count2
biggest no is 3
count3
biggest no is 8
count4
biggest no is 44
count5
biggest no is 7
count6
biggest no is 100
count7
biggest no is 6000
total count is 8


In the above output what i need is


output

Code:
Enter file name
myfile
Enter the number
4

vi output
count0
smallest no is 10
biggest no is 260
count1
smallest no is 1
biggest no is 100
count2
smallest no is 1
biggest no is 3
count3
smallest no is 2.7
biggest no is 8
count4
smallest no is 3
biggest no is 44
count5
smallest no is 4
biggest no is 7
count6
smallest no is 03
biggest no is 100
count7
smallest no is 160
biggest no is 6000
total count is 8

i belive my question would have been clear

plzzzzzzzzz anyone help meSmilieSmilie

kindly requesting!!

Thanks!!

---------- Post updated at 11:41 AM ---------- Previous update was at 01:07 AM ----------

hi

the program i tried is

Code:
#!/bin/bash
echo "Enter file name"
read file
echo "Enter the number"
read n
awk -v count=$n 'BEGIN{ i=0; } {k = $1; m = $1; for (j=1; j<count; j++) {getline; if ( $1 > k ) k = $1; if ( $1 < m ) m = $1;} print "count" ++i; print "smallest is " m; print "biggest no is " k} END{print "total count is " i}' $file


file content is (data)

Code:
6
3
2.3
5
0.3
2.6
100
21
2000
5
3
3
8
9
10
2000
12


my output is

Code:
Enter file name
data
Enter the number
4

count1
smallest is 2.3
biggest no is 6
count2
smallest is 0.3
biggest no is 100
count3
smallest is 3
biggest no is 2000
count4
smallest is 8
biggest no is 2000
count5
smallest is 
biggest no is 12
total count is 5

while there is left only one number in last i want the output like this given below
Code:
.
.
.
.
.
.
count5
only one number is left 12
total count is 5

then while taking 5set of no's my output is like this

Code:
Enter file name
data
Enter the number
5
count1
smallest is 0.3
biggest no is 6
count2
smallest is 2.6
biggest no is 2000
count3
smallest is 3
biggest no is 10
count4
smallest is 
biggest no is 2000
total count is 4

but it should display like this as given below

Code:
.
.
.
.
.
count4
smallest is 12
biggest no is 2000
total count is 4


plzzzzzzzzzz anyone help meSmilieSmilieSmilie

Tanx in advance

Last edited by Franklin52; 02-16-2010 at 07:01 AM.. Reason: Please use code tags!
 

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