Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Want to remove all lines but not latest 50 lines from a file
Top Forums UNIX for Dummies Questions & Answers Want to remove all lines but not latest 50 lines from a file Post 302868267 by drl on Saturday 26th of October 2013 07:25:35 PM
Old 10-26-2013
Hi, Scrutinizer.

I don't recall if I had the intention of omitting spaces, but, yes, that's how it works. I may need to add an additional function to handle both. I'll think on that.

The templates I have for setting up the environment, displaying input, posting output, and sometimes doing the comparison now runs into the 50s. Although they are under version control, it can be a pain updating those that are related and have common code. My goal is to encourage the user to actually copy and paste the scripts, possibly staging the data files, running the code, and seeing if it matches my results. That also keeps me honest.

Thanks for the feedback ... cheers, drl
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

remove lines from file

file: 1 xxxxxxx 2 xxx xxx 5 xxx xxx ... 180 xxxxxx 200 xxx how to remove any lines with the first number range 1-180 (9 Replies)
Discussion started by: bluemoon1
9 Replies

2. Shell Programming and Scripting

To remove the lines in my file

Hi, There seems to some hack attempts in my site. I have attached the index page of my site and I need to remove the below lines from the index page. The below lines are at the center of the file. --> </style> <script>E V A L( unescape(... (5 Replies)
Discussion started by: gsiva
5 Replies

3. UNIX for Dummies Questions & Answers

vi to remove lines in file

All, I have a text file with several entries like below: personname personname.domain.com I know there is a way to use vi to remove only the personname.domain.com line. Can someone help? I believe that it involves /s/g/ something...I just can't remember the exact syntax. Thanks (2 Replies)
Discussion started by: kjbaumann
2 Replies

4. Shell Programming and Scripting

remove lines from file

Hi gurus, i'm trying to remove a number of lines from a large file using the following command: sed '1,5000d' oldfile > newfile Somehow the lines in the old file are not deleted... Am I doing this wrongly? Any suggestions? :confused: Thanks! :) wee (10 Replies)
Discussion started by: lweegp
10 Replies

5. Shell Programming and Scripting

remove : lines from file

A small question I have a test.txt file I have contents as: a:google b:yahoo : c:facebook : d:hotmail How do I remove the line with : my output should be a:google b:yahoo c:facebook d:hotmail (5 Replies)
Discussion started by: aronmelon
5 Replies

6. Shell Programming and Scripting

remove blank lines and merge lines in shell

Hi, I'm not a expert in shell programming, so i've come here to take help from u gurus. I'm trying to tailor a csv file that i got to make it work for the LOAD FROM command. I've a datatable csv of the below format - --in file format xx,xx,xx ,xx , , , , ,,xx, xxxx,, ,, xxx,... (11 Replies)
Discussion started by: dvah
11 Replies

7. Shell Programming and Scripting

Remove lines from file

Hey Gang- I have a list of servers. I want to exclude servers that begin with and end with certain characters. Is there an easy command to do this? Example wvm1234dev wvm1234pro uvm1122dev uvm1122bku uvm1344dev I want to exclude any lines that start with "wvm" OR "uvm" AND end... (7 Replies)
Discussion started by: idiotboy
7 Replies

8. Shell Programming and Scripting

Two files, remove lines from second based on lines in first

I have two files, a keepout.txt and a database.csv. They're unsorted, but could be sorted. keepout: user1 buser3 anuser19 notheruser27 database: user1,2343,"information about",field,blah,34 user2,4231,"mo info",etc,stuff,43 notheruser27,4344,"hiya",thing,more thing,423... (4 Replies)
Discussion started by: esoffron
4 Replies

9. Shell Programming and Scripting

Remove lines that are subsets of other lines in File

Hello everyone, Although it seems easy, I've been stuck with this problem for a moment now and I can't figure out a way to get it done. My problem is the following: I have a file where each line is a sequence of IP addresses, example : 10.0.0.1 10.0.0.2 10.0.0.5 10.0.0.1 10.0.0.2... (5 Replies)
Discussion started by: MisterJellyBean
5 Replies

10. Shell Programming and Scripting

awk to remove lines that do not start with digit and combine line or lines

I have been searching and trying to come up with an awk that will perform the following on a converted text file (original is a pdf). 1. Since the first two lines are (begin with) text they are removed 2. if $1 is a number then all text is merged (combined) into one line until the next... (3 Replies)
Discussion started by: cmccabe
3 Replies

LEARN ABOUT CENTOS

gst-feedback-0.8

gst-feedback-0.8(1)						   User Commands					       gst-feedback-0.8(1)

NAME

       gst-feedback-0.8, gst-feedback - generate debug information for GStreamer bug reports

SYNOPSIS

       gst-feedback-0.8

       gst-feedback [--gst-list-mm] [--gst-mm=string] [--print]

DESCRIPTION

       gst-feedback-0.8  scans	the system for various types of information that is useful to GStreamer developers to help diagnose user problems.
       Depending on the type of bug report, it might be useful to attach gst-feedback output when you contact the developers.

       Note: The current version of this script scans many directories: /usr/lib, /usr/local/lib,  /home,  /usr/include,  /usr/local/include,  and
       /home (again) for various GStreamer installations. Depending on your system, you might not want to do this.

       Note:  gst-feedback-0.8	dumps  a  lot of information about a system.  Some of this information might be considered sensitive. If this is a
       concern, review the information before posting to a public forum such as the GStreamer bug tracking system.

       gst-feedback is a wrapper script that runs the latest installed version of gst-feedback-X.X. For example, if both gst-feedback-0.7 and gst-
       feedback-0.8 are installed on your system, gst-feedback runs gst-feedback-0.8.

OPTIONS

       The following options are supported by gst-feedback only:

       --gst-list-mm   List found major/minor versions. This option displays the versions that are available.

       --gst-mm=string Force  major/minor  version.  This  option  enables you to specify a specific version to run, if you do not want to run the
		       default version.

       --print	       Print wrapped command line. This option displays the command that will be run, and then runs the command.

EXAMPLES

       Example 1: Generating Feedback Information

       example% gst-feedback-0.8

       Example 2: Generating Feedback Information and Redirecting Output and Errors to a File

       example% gst-feedback-0.8 &> myfeedback

       Example 3: Running the Wrapper Script and Displaying the Command Name

       example% gst-feedback --print
       /usr/bin/gst-feedback-0.8

FILES

       The following files are used by this application:

       /usr/bin/gst-feedback-0.Executable to generate debug info for GStreamer bug reports

       /usr/bin/gst-feedback   Wrapper script that runs the latest installed version of gst-feedback-X.X

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-media		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gst-complete(1), gst-compprep(1), gst-inspect(1), gst-launch(1), gst-launch-ext(1), gst-md5sum(1), gst-register(1), gst-thumbnail(1),  gst-
       typefind(1), gst-xmlinspect(1), gst-xmllaunch(1), gstreamer-properties(1), libgstreamer-0.8(3), libgstgetbits(3)

NOTES

       Original man page written by the GStreamer team at http://gstreamer.net/.

       Updated by Brian Cameron, Sun Microsystems Inc., 2004.

SunOS 5.10							    14 Oct 2004 					       gst-feedback-0.8(1)
All times are GMT -4. The time now is 09:49 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy