Sponsored Content
Top Forums Shell Programming and Scripting Delete the last line in a file using AWK or PERL Post 302088054 by jim mcnamara on Friday 8th of September 2006 08:08:29 AM
Old 09-08-2006
remove last line:
Code:
 sed '$d' filename > newfile

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk, perl Script for processing a single line text file

I need a script to process a huge single line text file: The sample of the text is: "forward_inline_item": "Inline", "options_region_Australia": "Australia", "server_event_err_msg": "There was an error attempting to save", "Token": "Yes", "family": "Family","pwd_login_tab": "Enter Your... (1 Reply)
Discussion started by: hmsadiq
1 Replies

2. Shell Programming and Scripting

how to delete line with awk

Hi I have a multi -line file which is sorted by the 1-st colomn in the following format: 400 0000 0001 1000 1010 0111 0000 1000 0000 402 1101 0000 1100 1010 0111 1000 1000 0000 403 1001 0000 1100 1010 0111 0000 1000 0000 495 1000 0000 1100 1010 0111 0000 1000 0000 500 0000 0001 1000 0010... (2 Replies)
Discussion started by: aoussenko
2 Replies

3. Shell Programming and Scripting

Delete a line in a file starting with - Perl one-liner

Hi I need a perl onliner to delete a line in a file starting with few words. Example file.txt ---------- my name is don I live in London I am woking as engineer I want to delete a line starting with 'I live in' using perl oneliner and in place edit with out temporary files Thanks... (2 Replies)
Discussion started by: ammu
2 Replies

4. Shell Programming and Scripting

delete more than one line awk or perl

Hi all! How can a file be rid of three lines in sequence like the sample below: ... </s> <s> <w></w> </s> <s> ...to get: ... </s> <s> ... Note that the digits between square brackets may be more than one, comprising a comma, or a full-stop; and that the string between brackets... (1 Reply)
Discussion started by: mjomba
1 Replies

5. Shell Programming and Scripting

Using sed (or awk or perl) to delete rows in a file

I have a Unix file with 200,000 records, and need to remove all records from the file that have the character ‘I' in position 68 (68 bytes from the left). I have searched for similar problems and it appears that it would be possible with sed, awk or perl but I do not know enough about any of these... (7 Replies)
Discussion started by: joddo
7 Replies

6. Shell Programming and Scripting

Delete specific line in awk

Hi, I'm totally new to awk, so thanks in advance for your help. I want to make a csv file out of a text file I've exported from a database I want to do two things: 1. Change pipes ("|") to commas (",") to make a text file into CSV 2. Remove the second line of the file, which is useless junk. ... (3 Replies)
Discussion started by: pip56789
3 Replies

7. UNIX for Dummies Questions & Answers

Using awk to delete a certain line

Ok I have a file that contains #num.txt 1 2 3 4 5 6 7 8 9 my script main.sh checks to see if the first two arguments exist in a seperate file and the third argument would be the value in the num.txt so when i execute $ main.sh name place 5 how would i go about deleteing the... (13 Replies)
Discussion started by: austing5
13 Replies

8. Shell Programming and Scripting

Combine multiple unique lines from event log text file into one line, use PERL or AWK?

I can't decide if I should use AWK or PERL after pouring over these forums for hours today I decided I'd post something and see if I couldn't get some advice. I've got a text file full of hundreds of events in this format: Record Number : 1 Records in Seq : ... (3 Replies)
Discussion started by: Mayday22
3 Replies

9. Shell Programming and Scripting

Delete line - Perl one liner

Hi all, I need a Perl one liner which prints a newline into a .txt file, only where the line starts with "/mediawiki-1.19.0/". It should add the newline to the line before. My problem is, when I try to realize this (with my little knowledge :rolleyes: ) i come to the point where the // are... (4 Replies)
Discussion started by: Mr.Smith
4 Replies

10. UNIX for Dummies Questions & Answers

Need an awk command to delete a line

Hi all, As of now am using an awk command to check the number of columns in a file that has 10 lakh rows. Is it possible to remove that particular line having an extra column and copy the remaining lines to a new file ? YOUR HELP IS HIGHLY APPRECIATED. THANKS IN ADVANCE (5 Replies)
Discussion started by: Rahul619
5 Replies
DPKG-AWK(1)						      General Commands Manual						       DPKG-AWK(1)

NAME
dpkg-awk - Utility to read a dpkg style db file SYNOPSIS
dpkg-awk [(-f|--file) filename] [(-d|--debug) ##] [(-s|--sort) list] [(-rs|--rec_sep) ??] '<fieldname>:<regex>' ... -- <out_fieldname> .. DESCRIPTION
dpkg-awk Parses a dpkg status file (or other similarly formatted file) and outputs the resulting records. It can use regex on the field values to limit the returned records, it can also be told which fields to output, and it can sort the matched fields. OPTIONS
-f filename --file filename The file to parse. The default is /var/lib/dpkg/status. -d [#] --debug [#] Each time this is specified, it increased the debug level. -s field(s) --sort field(s) A space or comma separated list of fields to sort on. -n field(s) --numeric field(s) A space or comma separated list of fields that should be interpreted as numeric in value. -rs ?? --rec_sep ?? Output this string at the end of each output paragraph. -h --help Display some help. fieldname The fields from the file, that are matched with the regex given. The fieldnames are case insensitive. out_fieldname The fields from the file, that are output for each record. If the first field listed begins with ^, then the list of fields that follows will NOT be output. BUGS
Be warned that the author has only a shallow understanding of the dpkg packaging system, so there are probably tons of bugs in this pro- gram. This program comes with no warranties. If running this program causes fire and brimstone to rain down upon the earth, you will be on your own. This program accesses the dpkg database directly in places, querying for data that cannot be gotten via dpkg. AUTHOR
Adam Heath <doogie@debian.org> DEBIAN
Debian Utilities DPKG-AWK(1)
All times are GMT -4. The time now is 06:02 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy