Deleting last records of a file


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Deleting last records of a file
# 8  
Old 08-05-2009
Code:
awk 'FNR==NR{c++;next}FNR<(c-7){print}' file file

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Separate records of a file on 2 types of records

Hi I am new to shell programming in unix Please if I can provide help. I have a file structure of a header record and "N" detail records. The header record will be the total number of detail records I need to split the file in 2: One for the header Another for all detail records Could... (1 Reply)
Discussion started by: jamcogar
1 Replies

2. Shell Programming and Scripting

Deleting the records based on the condition

Hi, Can any one help me, in deleting the records from the database table based on the following condition: script should take a configurable parameter as input. The input is nothing but “no. of years”. For example, if I enter 2 as input parameter, then the 2 year old records should get... (2 Replies)
Discussion started by: zxcjggu708
2 Replies

3. UNIX for Dummies Questions & Answers

Deleting records from .dat file

Hi, I need to delete one row from a .dat file. error processing column PCT_USED in row 1053295 for datafile /exp/stats/ts_stats.dat ORA-01722: invalid number This is used to load records using sql loader. Please let me know the procedure to do it. Regards, VN (3 Replies)
Discussion started by: narayanv
3 Replies

4. Shell Programming and Scripting

Perl : Deleting the records in the excel sheet

I have a excel sheet with contains the records as below.. also uploaded the input excelsheet and the output excel sheet(expected output). 322mpls32.net.xyz.comBW: 44.0 M Hrly Avg (IN /... (1 Reply)
Discussion started by: giridhar276
1 Replies

5. Shell Programming and Scripting

Deleting duplicate records from file 1 if records from file 2 match

I have 2 files "File 1" is delimited by ";" and "File 2" is delimited by "|". File 1 below (3 record shown): Doc1;03/01/2012;New York;6 Main Street;Mr. Smith 1;Mr. Jones Doc2;03/01/2012;Syracuse;876 Broadway;John Davis;Barbara Lull Doc3;03/01/2012;Buffalo;779 Old Windy Road;Charles... (2 Replies)
Discussion started by: vestport
2 Replies

6. 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

7. Shell Programming and Scripting

Deleting Duplicate Records

Hello, I'm have a file of xy data with over 1000 records. I want to delete both x and y values for any record that has the same x value as any previous record thus removing the duplicates from my file. Can anyone help? Thanks, Dan (3 Replies)
Discussion started by: DFr0st
3 Replies

8. Shell Programming and Scripting

deleting multiple records from a huge file at one time

I have a very big file of 5gb size and there are about 50 million records in there. I have to delete the records based on recrord number that I know fromoutside with out opening the file. The record numbers are very random like 5000678, 7890005 etc. Can somebody let me know how i can... (5 Replies)
Discussion started by: dsravan
5 Replies

9. Shell Programming and Scripting

Count No of Records in File without counting Header and Trailer Records

I have a flat file and need to count no of records in the file less the header and the trailer record. I would appreciate any and all asistance Thanks Hadi Lalani (2 Replies)
Discussion started by: guiguy
2 Replies

10. UNIX for Dummies Questions & Answers

deleting records with a missing field

I had to delete rows when a record was missing a field. My solution was cut -c 202-402 ${dataFile} | awk '{if (substr($0,103,30) !~ /^ *$/) print $0} >> ${workFile} The cut is because they came two records to a row. Anyone want to offer a more elegant solution? (2 Replies)
Discussion started by: gillbates
2 Replies
Login or Register to Ask a Question
TTYREC(1)						      General Commands Manual							 TTYREC(1)

NAME
ttyrec - a tty recorder SYNOPSIS
ttyrec [-a] [-u] [-e command] [file] DESCRIPTION
Ttyrec is a tty recorder. It is a derivative of script(1) command for recording timing information with microsecond accuracy as well. It can record emacs -nw, vi, lynx, or any programs running on tty. Ttyrec invokes a shell and records the session until the shell exits. Recorded data can be played back with ttyplay(1). If the argument file is given, the session will be recorded in that file. Otherwise, ttyrecord is used as default. OPTIONS
-a Append the output to file or ttyrecord, rather than overwriting it. -u With this option, ttyrec automatically calls uudecode(1) and saves its output when uuencoded data appear on the session. It allow you to transfer files from remote host. You can call ttyrec with this option, login to the remote host and invoke uuencode(1) on it for the file you want to transfer. -e command Invoke command when ttyrec starts. ENVIRONMENT
SHELL If the variable SHELL exists, the shell forked by ttyrec will be that shell. If it's not set, the Bourne shell is assumed. (Most shells set this variable automatically). SEE ALSO
script(1), ttyplay(1), ttytime(1), uuencode(1), uudecode(1) TTYREC(1)

Featured Tech Videos