delete lines from a file. Post: 50296

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delete all lines in file

how can i delete all lines in file by using "vi" ?

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how can I delete lines without actually going into the file

what am trying to do is delete a line in a specific file but I dont know what to do. I cant use the sed or awk commands because these commands dont really alter the original file. they only alter what they display on the screen by the way, am trying to do this from a script so if anybody can...

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delete the lines from file

i have two files & want to delete the lines from 2nd file which matches with 1st file

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delete n last lines of a file

Hello!!! how can I delete the last n lines of a file??? Thanks

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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.

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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: ...

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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...

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Delete lines in a file

Hi This is a sample of my data file. ##field PH01000000 1 4869017 #PH01000000G0240 WWW278545G0240 P.he_model_v1.0 erine 119238 121805 . - . ID=PH01000000G0240;Description="zinc finger, C3HC4 type domain containing protein, expressed"...

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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,

10. UNIX for Beginners Questions & Answers

Delete Some Lines from File

LEARN ABOUT DEBIAN

otfdump

OTFDUMP(1)							   User Commands							OTFDUMP(1)

NAME

       otfdump - otfdump

DESCRIPTION

	      otfdump - convert otf traces or parts of it into a human readable, long

	      version

	      Options:

       -h, --help
	      show this help message

       -V     show OTF version

       -f <n> set max number of filehandles available (default: 50)

       -o <file>
	      output file if the ouput file is unspecified the stdout will be used

       --num <a> <b>
	      output only records no. [a,b]

       --time <a> <b> output only records with time stamp in [a,b]

       --nodef
	      omit definition records

       --noevent
	      omit event records

       --nostat
	      omit statistic records

       --nosnap
	      omit snapshot records

       --nomarker
	      omit marker records

       --nokeyvalue
	      omit key-value pairs

       --fullkeyvalue show key-value pairs including the contents
	      of byte-arrays

       --procs <a>
	      show only processes <a> <a> is a space-seperated list of process-tokens

       --records <a>
	      show  only  records  <a>	<a> is a space-seperated list of record-type-numbers record-type-numbers can be found in OTF_Definitions.h
	      (OTF_*_RECORD)

       -s, --silent
	      do not display anything except the time otfdump needed to read the tracefile

otfdump 1.10.2							     May 2012								OTFDUMP(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

delete all lines in file

Discussion started by: strok

2. Shell Programming and Scripting

how can I delete lines without actually going into the file

Discussion started by: TRUEST

3. Shell Programming and Scripting

delete the lines from file

Discussion started by: sameersam

4. Shell Programming and Scripting

delete n last lines of a file

Discussion started by: ncatdesigner