Sponsored Content
Top Forums Shell Programming and Scripting Delete a set of lines from a file Post 302721065 by kasthu12 on Thursday 25th of October 2012 07:01:29 AM
Old 10-25-2012
Delete a set of lines from a file

Hi All,
Am very new for this Shell scripting.
Could anyone pls let me know how to delete a set of lines from a (.DAT) file using ksh script.
for example from line 3 to line 7. The size of the target file is hugeSmilie

---------- Post updated at 11:01 PM ---------- Previous update was at 11:00 PM ----------

Smilie Smilie
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Set lines of in a file to seperate vars

In a bash script, I'm looking for a way to set each matching line of a file into its own variable, or variable array. As an example, i have a crontab file with several entries: 00 23 * * * /usr/local/bin/msqlupdate -all 00 11 * * * /usr/local/bin/msqlupdate -inc 00 03 * * *... (2 Replies)
Discussion started by: lochraven
2 Replies

2. Shell Programming and Scripting

shellscript to find a line in between a particular set of lines of a text file

i have a file a.txt and following is only one portion. I want to search <branch value="/dev36/AREA/" include="yes"></branch> present in between <template_file name="Approve External" path="core/approve/bin" and </template_file> where the no of lines containing "<branch value= " is increasing ... (2 Replies)
Discussion started by: millan
2 Replies

3. Shell Programming and Scripting

How to delete lines in a file that have duplicates or derive the lines that aper once

Input: a b b c d d I need: a c I know how to get this (the lines that have duplicates) : b d sort file | uniq -d But i need opossite of this. I have searched the forum and other places as well, but have found solution for everything except this variant of the problem. (3 Replies)
Discussion started by: necroman08
3 Replies

4. UNIX for Dummies Questions & Answers

How get only required lines & delete the rest of the lines in file

Hiiii I have a file which contains huge data as a.dat: PDE 1990 1 9 18 51 28.90 24.7500 95.2800 118.0 6.1 0.0 BURMA event name: 010990D time shift: 7.3000 half duration: 5.0000 latitude: 24.4200 longitude: 94.9500 depth: 129.6000 Mrr: ... (7 Replies)
Discussion started by: reva
7 Replies

5. UNIX for Advanced & Expert Users

In a huge file, Delete duplicate lines leaving unique lines

Hi All, I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space. I dont know if this works : I want to read each line of the File in a For Loop, and want to... (16 Replies)
Discussion started by: krishnix
16 Replies

6. Shell Programming and Scripting

search and replace, when found, delete multiple lines, add new set of lines?

hey guys, I tried searching but most 'search and replace' questions are related to one liners. Say I have a file to be replaced that has the following: $ cat testing.txt TESTING AAA BBB CCC DDD EEE FFF GGG HHH ENDTESTING This is the input file: (3 Replies)
Discussion started by: DeuceLee
3 Replies

7. Shell Programming and Scripting

Need to delete large set of files (i.e) close to 100K from a directory based on the input file

Hi all, I need a script to delete a large set of files from a directory under / based on an input file and want to redirect errors into separate file. I have already prepared a list of files in the input file. Kndly help me. Thanks, Prash (36 Replies)
Discussion started by: prash358
36 Replies

8. UNIX for Dummies Questions & Answers

Removing a set of Duplicate lines from a file

Hi, How do i remove a set of duplicate lines from a file. My file contains the lines: abc def ghi abc def ghi jkl mno pqr jkl mno (1 Reply)
Discussion started by: raosr020
1 Replies

9. Shell Programming and Scripting

Delete 40 lines after every 24 lines from a file

Hello, I have file of more than 10000 lines. I want to delete 40 lines after every 20 lines. e.g from a huge file, i want to delete line no from 34 - 74, then 94 - 134 etc and so on. Please let me know how i can do it. Best regards, (11 Replies)
Discussion started by: nehashine
11 Replies

10. Shell Programming and Scripting

Recursive delete in a file using a set of values in other file

Hi, I have got a file with 6K records and I want to delete 500 records from this file which match the values present in another file. Format of the both the files is different. Example : File 1 record CCCCCC 11292562ABCDEF MBR/PSF6/108100502/BEN01XXX XXX Example : File 2 record... (1 Reply)
Discussion started by: Nikhath
1 Replies
ROOTTAIL(1)						      General Commands Manual						       ROOTTAIL(1)

NAME
root-tail - print text directly to X11 root window SYNOPSIS
root-tail [-g|--geometry GEOMETRY] [-fn|--font FONTSPEC] [--color color] [--reload SEC COMMAND] [--shade] [--outline] [--minspace] [--noflicker] [-f|--fork] [--reverse] [--whole] [--partial] [--update] [--cont STRING] [--wordwrap] [--justify] [--noinitial] [--frame] [-id ID] [-i|--interval SECONDS] [-V] file1[,color[,desc]] [file2[,color[,desc]]] DESCRIPTION
Displays a given file anywhere on your X11 root window, i.e. it is kind of tail -f for multiple files using your desktop background as out- put window. All non-option arguments on the command line are files to be logged. A null desc (example: "/var/log/messages,red,") will prevent the printing of a description and the []'s. General Options --color COLOR Use COLOR as default. --font | -fn FONTSPEC Use font FONTSPEC. This can be either a fixed width font like -fn fixed or any font using -fn '-*-*-*-*-*-*-*-*-*-*-*-*-*-*' with the appropriate fields filled out (see xfontsel). Specifying a different FONTSPEC before each filename will cause each file to be displayed in a different font. -f | --fork Forks to the background. --reverse Display the files in reverse order, with the newest lines at the top. --whole Only display whole lines. If the last line of a file doesn't yet end with a newline character then wait until it does before dis- playing it. This is the default if more than one file is being displayed. --partial This is the opposite of the --whole option (see above). It displays lines even if they don't yet have a newline at the end. This is the default if only one file is being displayed. --update Update partial lines 'in place' if they are still on the screen when they are updated in their files. Using --update automatically turns on --partial. --cont STRING When partial lines are broken into two lines in the display, prefix the 2nd line with STRING. Defaults to "|| ". Specify the "--whole" argument to ensure partial lines are never displayed, or specify "--update" to attempt to "repair" broken lines in-place. --cont-color COLOR Use COLOR when displaying the continuation string (as optionally specified with the --cont option above). --wordwrap The default behaviour is to fit as much as possible onto each line of output, even if this means splitting a word between one line and the next. The --wordwrap argument splits lines at spaces if possible. --justify After wrapping long lines, attempt to justify the text to produce a smooth right-hand margin. Implies --wordwrap. --reload SEC COMMAND Re-display the file(s) and run COMMAND every SEC seconds. The default is to never re-display the file(s). --shade Add black shading to the font. --outline Add a black outline to the font (making redraws quite a bit slower). --minspace Use minimum linespace even when using shading or outlining. This might result in leftover pixels (dependign on font and logfile con- tent). --noflicker Use slower but flicker-free update. --noinitial Don't display the end of the file(s) initially. -id ID Use the given window ID for output instead of the root window. -i | --interval SECONDS Use the specified sleeping interval between checks instead of the default 2.4 seconds. Fractional values are OK. -V Print version information. --frame Draw a frame around the selected area. This is useful when trying to find the perfect geometry. EXAMPLE
root-tail -g 800x250+100+50 -font 10x20 /var/log/messages,green -font 12x24 /var/log/secure,red,'ALERT' BUGS
Some desktop environments open a virtual root window and make it difficult to share it. If you cannot see anything after starting root- tail, try to find a setting "allow programs on desktop" or similar, or manually specify a window id. Should you happen to find any bugs please fix them and send me a diff. NOTE: This program was modified by Marc Lehmann <pcg@goof.com>, who couldn't reach the original author. Please direct bug-reports etc. to pcg@goof.com. http://root-tail.plan9.de/ 4.2 Berkeley Distribution 2004-03-27 ROOTTAIL(1)
All times are GMT -4. The time now is 12:51 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy