delete all lines in file Post: 17145

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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 lines from a file.

I have a file which has about 500K records and I need to delete about 50 records from the file. I know line numbers and am using sed '13456,13457,......d' filename > new file. It does not seem to be working. Any help will greatly appreciated.

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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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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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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,

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Delete Some Lines from File

LEARN ABOUT DEBIAN

grcompiler

grcompiler(1)															     grcompiler(1)

NAME

       grcompiler - Compile GDL into a TrueType Font

SYNOPSIS

       grcompiler [-d] [-D] [-g] [-n number] [-v number] [-w number] [-wall] [-q] gdl-file font-file [output-file] [output-fontname]

Description
       Grcompiler  compiles  a	Graphite Description Language description of the smarts for a font along with a TrueType Font to create a graphite
       font with graphite tables in it.

       -d     Generate XML debugger file.

       -D     Generate all debugger files.

       -g     Permit and ignore invalid glyph definitions.

       -nnumber
	      Set name table start location.

       -q     Quiet mode (no messages except on error).

       -vnumber
	      Set Silf table version number.

       -wnnnn Ignore warning with the given number. This option may be repeated.

       -wall  Display all warnings.

Environment
       grcompiler makes use of the following environment variables

       GDLPP  Specifies the command to execute to run the GDL preprocessor

Files
       gdlerr.txt
	      Warnings and errors are output to this file.

       dbg_classes.txt
	      Debug file that specifies the classes stored in the font in terms of their GDL source and containing glyph ids in hex.

       dbg_cmap.txt
	      Debug file giving Unicode to glyph mapping of all the glyphs in the font and vice versa.

       dbg_enginecode.txt
	      Debug file containing the action code and constraint code associated with each pass and rule in a pass.

       dbg_fsm.txt
	      Debug file that gives the finite state machines of each pass and the rules referenced. For each pass, a  mapping	is  given  between
	      glyph and column number.

       dbg_glyphattrs.txt
	      Debug file containing all the glyph attributes and their names, along with values specified for each glyph.

       dbg_parsetree.txt
	      Debug file giving the complete parse tree of the GDL source file.

       dbg_ruleprec.txt
	      Debug file that lists the rules in precedence order (order in which they will be tested) for each pass.

       $_temp.gdl
	      Debug file containing the output of gdlpp

Author
       Martin Hosken <mhosken@users.sourceforge.net>

							   $Date: 2012-05-29 11:36:50 $ 					     grcompiler(1)

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