Getting Max record from a file

Computing.Net > Forums > Unix > Getting Max record from a file

Getting Max record from a file

Original Message

Name: anilcgowda
Date: August 25, 2005 at 11:09:47 Pacific
Subject: Getting Max record from a file
OS: UNIX
CPU/Ram: 1GB

Comment:

Hi,
I have a file with sequence numbers in it. I want to insert few more sequence numbers from a new file checking the maximum sequence numbers available in the file.
Example:
oldfile.txt has
100
101
102
newfile.txt has
103
104..
I want to check if the numbers in the newfile.txt is greater than the maximum number in oldfile.txt and and if they are not already there, then insert these new numbers into the oldfile.txt
I don't know how to determine the max record in a file and how to compare this.
Can somebody help me in achieving the above task.
Thanks,
Anil

Report Offensive Message For Removal

Response Number 1

Name: David Perry
Date: August 26, 2005 at 07:25:35 Pacific

Reply: (edit)

max=`sort -nr num.txt | head -1`
where num.txt looks like
100
101
102

Report Offensive Follow Up For Removal


getting 9 char from a file... Shell Script: Get value from a file Get the first line from a file Grouping data from a file Sort keys provided from a file	reading from a file in unix Extracting information from a file input to a program from a file getting console messages into a file Using while loop to read a file

AIX refresh window

Print Prblm AIX/HP Jetdir...

Use following form to reply to current message:

Name: From My Computing.Net Settings E-Mail: From My Computing.Net Settings Subject: Getting Max record from a file

Comments:

  Homepage URL (*): 
Homepage Title (*): 
         Image URL:

Have you ever used OpenOffice?

Poll Finishes In 5 Days.
Discuss in The Lounge

use of disk defragmenter?

Recording data

Share Interet XP to 2000

Bootable cd and start SIW

western digital 80GB HD problem.

All Posts Awaiting Replies