Visit Our UNIX and Linux User Community


Dropping Records for unknown reason in awk script


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Dropping Records for unknown reason in awk script
# 8  
Old 11-02-2009
Assuming the length of a record is 77 you can do something like:

Code:
awk 'length < 77 {$0 = $0 "0000000000000000000000           NM X"}1' file > newfile

# 9  
Old 11-02-2009
The result of the "cmp -l" looks like:
Code:
899  40  60
900  40  60
901  40  60

If you are missing records, it is most likely that the differences will not have a 40 (space) in the second field. Thus
Code:
cmp -l infile outfile |awk '$2 != 40' |head

would give the approximate locations of the missing records.

Previous Thread | Next Thread
Test Your Knowledge in Computers #671
Difficulty: Medium
DOS primarily consists of Microsoft's MS-DOS and a rebranded IBM version under the name PC DOS, both of which were introduced in 1981.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

SSH is failing due to unknown reason

Hi, I have setup keys between user1@server1 and user2@server2 however, the ssh is failing. server1 is Linux 3.10.0-514.6.2.el7.x86_64 #1 SMP whereas server2 is 5.10 Generic_150400-40 sun4v sparc sun4v I have checked port 22 to be open and keys to be correct. I also find the permissions... (3 Replies)
Discussion started by: mohtashims
3 Replies

2. Shell Programming and Scripting

awk to update unknown value in file using range of another

I am trying to use awk to update all the unknown values in $6 of file2, if the $4 value in file 2 is within the range of $1 of file1. If there is already a value in $6 other then unknown, it is skipped and the next line is processed. In my awk attempt below the final output is 6 tab-delimited... (6 Replies)
Discussion started by: cmccabe
6 Replies

3. Shell Programming and Scripting

Print Unknown Number of User Inputs in awk

Hello, I am new to awk and I am trying to figure out how to print an output based on user input. For example: ubuntu:~/scripts$ steps="step1, step2, step3" ubuntu:~/scripts$ echo $steps step1, step2, step3 I am playing around and I got this pattern that I want: ... (3 Replies)
Discussion started by: tattoostreet
3 Replies

4. UNIX for Advanced & Expert Users

Unix script seems to be momentarily creating child process for unknown reason

Hi, I have a unix script that basically has a while loop inside which it checks Oracle database for certain records. If it finds the records, it does some processing and then goes back to the while loop. If it doesnot find any matching records, then it sleeps for 30 seconds and then goes back to... (17 Replies)
Discussion started by: waavman
17 Replies

5. Shell Programming and Scripting

awk script for getting the selected records from a file.

Hello, I have attached one file named file.txt . I have to create a file using the awk script with the records in which 38th position is P and not V . ex it should have 00501 HOLTSVILLE NYP00501 and it should not include 00501 I R S SERVICE CENTER ... (3 Replies)
Discussion started by: sonam273
3 Replies

6. Linux

Need awk script for removing duplicate records

I have log file having Traffic line 2011-05-21 15:11:50.356599 TCP (6), length: 52) 10.10.10.1.3020 > 10.10.10.254.50404: 2011-05-21 15:11:50.652739 TCP (6), length: 52) 10.10.10.254.50404 > 10.10.10.1.3020: 2011-05-21 15:11:50.652558 TCP (6), length: 89) 10.10.10.1.3020 >... (1 Reply)
Discussion started by: Rastamed
1 Replies

7. Linux

Need awk script for removing duplicate records

I have huge txt file having millions of trade data. For e.g Trade.txt (first 8 lines in the file is header info) COB_DATE,TRADE_ID,SOURCE_SYSTEM_TRADE_ID,TRADE_GROUP_ID, TRADE_TYPE,DEALER_NAME,EXTERNAL_COUNTERPARTY_ID, EXTERNAL_COUNTERPARTY_NAME,DB_COUNTERPARTY_ID,... (6 Replies)
Discussion started by: nmumbarkar
6 Replies

8. Shell Programming and Scripting

Finding out how long a script runs for and exit reason.

I am running a daemon program that sends texts via a connected mobile phone. I run this daemon via CLI, and it loops a few commands (checking to see if there are any new texts). It runs perfectly, the problem is, when I leave this to run on my Ubuntu Desktop, and come back to it hours later it... (2 Replies)
Discussion started by: daydreamer
2 Replies

9. Shell Programming and Scripting

awk out an unknown column ?

I need a solution to awk out an unknown column. I am unable to say '{print $x}' because the location changes. I would like to find a perl or awk solution to this. I do not know either very well but am trying to delve deeper into both. I am looking for the version of pkg8 in this example. Please... (17 Replies)
Discussion started by: i9300
17 Replies

10. Shell Programming and Scripting

why my script stopped- any reason(urgent please)

Hi Friends, iam running some scripts, which are all off suddenly stopping. Can any one tell me the reason why it happend. Is there any reason to stop the scripts. Thanks Krishna. (1 Reply)
Discussion started by: krishna9
1 Replies

Featured Tech Videos