Sponsored Content
Full Discussion: delete records from a file
Top Forums Shell Programming and Scripting delete records from a file Post 302135512 by dsravan on Monday 10th of September 2007 08:34:16 AM
Old 09-10-2007
Thanks Klashxx

Can you explain what this means.

awk -F'|' '$2 !~ /^abc$/' input_file.txt > output_file.txt

does !~ means equal to? i thought its not equal to?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Delete Duplicate records from a tilde delimited file

Hi All, I want to delete duplicate records from a tilde delimited file. Criteria is considering the first 2 fields, the combination of which has to be unique, below is a sample of records in the input file 1620000010338~2446694087~0~20061130220000~A00BCC1CT... (5 Replies)
Discussion started by: irshadm
5 Replies

2. UNIX for Dummies Questions & Answers

Use records from one file to delete records in another file

file_in_1: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 file_in_2: 9 10 11 12 21 22 23 24 1 2 3 4 17 18 19 20 file_out: (5 Replies)
Discussion started by: kenneth.mcbride
5 Replies

3. UNIX for Dummies Questions & Answers

How can you delete records in a file matching a pattern?

I am curious if the following can be done in a file in unix. Let's say I have a flat file with the following data AAA,12,2,,,, BBB,3,1,,,, CCC,,,,, DDD,2,,,,, SQQ,,,,, ASJ,,3,5 I only want to capture the data with values into a new file. If the data contains the pattern ,,,,, as in... (2 Replies)
Discussion started by: mode09
2 Replies

4. UNIX and Linux Applications

How to delete files with no records?

Hi, I have a file whose size is not zero but it has no records and another which has records. I want to delete all the files that have no records in it (even if size > 0). How do I do it? I have tried the below option #!/bin/ksh temp1 = $(wc -l < INVX102C.sf) if ; then echo "Data... (3 Replies)
Discussion started by: sangharsh
3 Replies

5. UNIX for Dummies Questions & Answers

Grep specific records from a file of records that are separated by an empty line

Hi everyone. I am a newbie to Linux stuff. I have this kind of problem which couldn't solve alone. I have a text file with records separated by empty lines like this: ID: 20 Name: X Age: 19 ID: 21 Name: Z ID: 22 Email: xxx@yahoo.com Name: Y Age: 19 I want to grep records that... (4 Replies)
Discussion started by: Atrisa
4 Replies

6. Shell Programming and Scripting

Need unix commands to delete records from one file if the same record present in another file...

Need unix commands to delete records from one file if the same record present in another file... just like join ... if the record present in both files.. delete from first file or delete the particular record and write the unmatched records to new file.. tried with grep and while... (6 Replies)
Discussion started by: msathees
6 Replies

7. UNIX for Dummies Questions & Answers

Delete records from a big file based on some condition

Hi, To load a big file in a table,I have a make sure that all rows in the file has same number of the columns . So in my file if I am getting any rows which have columns not equal to 6 , I need to delete it . Delimiter is space and columns are optionally enclosed by "". This can be ... (1 Reply)
Discussion started by: hemantraijain
1 Replies

8. Shell Programming and Scripting

Delete records within a file upon a condition

Hi Friends, I have the following file, cat input chr1 1000 2000 chr1 600 699 chr1 701 1000 chr1 600 1710 chr2 900 1800 Now, I would like to see the difference of Record1.Col2 - Record2.Col2 Record1.Col2 - Record2.Col3 Record1.Col3 - Record2.Col2 Record1.Col3 - Record2.Col3 ... (1 Reply)
Discussion started by: jacobs.smith
1 Replies

9. UNIX for Dummies Questions & Answers

Delete records based on a text file from a text file

Hi Folks, I am a novice and need to build a script in bash. I have 2 text files data.txt file is big file, column 2 is the we need to search and delete in the output. The filter file contains the rows to be deleted. Data.txt state city zone Alabama Huntsville 4 California SanDiego 3... (3 Replies)
Discussion started by: tech_frk
3 Replies

10. Shell Programming and Scripting

Delete the records in file based on lookup file.

Hi I have two files one.txt and two.txt one.txt 123 324 456 235 456 two txt abc one 000 123 abc abc one 000 456 abc abc one 000 122 abc abc one 000 111 abc My question here is, the records which are present in one.txt has to deleted in second file two.txt my output result... (2 Replies)
Discussion started by: Ganesh L
2 Replies
INTERFACE-ORDER(5)						    resolvconf							INTERFACE-ORDER(5)

NAME
interface-order - resolvconf configuration file DESCRIPTION
The file /etc/resolvconf/interface-order is used to control the order in which resolvconf nameserver information records are processed by those resolvconf update scripts that consult this file. (The name of the file is apt because a resolvconf nameserver information record is named after the interface with which it is associated.) The file contains a sequence of shell glob patterns, one per line. The position of a record in the order is the point at which its name first matches a pattern. Patterns may not contain whitespace, slashes or initial dots or tildes. Blank lines and lines beginning with a '#' are ignored. Resolvconf update scripts in /etc/resolvconf/update.d/ that consult this file include the current default versions of dnsmasq, pdnsd and libc. (Actually they don't read the file directly; they call the utility program /lib/resolvconf/list-records which lists records in the specified order and omits the names of empty records.) EXAMPLE
# /etc/resolvconf/interface-order # Use nameservers on the loopback interface first. lo* # Next use records for Ethernet interfaces eth* # Next use records for Wi-Fi interfaces wlan* # Next use records for PPP interfaces ppp* # Last use other interfaces * AUTHOR
Resolvconf was written by Thomas Hood <jdthood@gmail.com>. COPYRIGHT
Copyright (C) 2004, 2011 Thomas Hood This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
resolvconf(8) resolvconf 18 May 2011 INTERFACE-ORDER(5)
All times are GMT -4. The time now is 01:42 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy