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Full Discussion: cut and paste
Top Forums Shell Programming and Scripting cut and paste Post 302359116 by jp2542a on Monday 5th of October 2009 10:04:59 PM
Old 10-05-2009
Copy this to a text file (strip.awk)

Code:
# strip lines out of file and make new file of lines removed and modified

# set up patterns - any regex will work

BEGIN {
        MY_PAT="835100000000000638"
        NEW_PAT="835100000000000639"
}

# This clause is executed on the opening of each file on the command line
# It first checks to see if this is not the first file and cleans up the
#  previous files and copies the new stripped file to the old file
#  NOTE:  I would prefer if it didn't overwrite the input file...
# It then creates the names and commands it will need later
(FNR == 1) {                    # check if first line of new file
        if ( NR != 1)           # see if this is not first file
        {
                close(FILEOUT)  # if true, then we close previous files
                close(FILELOG)
                system(FILECP)  # do the copy
                system(FILERM)  # remove the work file
        }

        FILEOUT = FILENAME ".strip"     # create striped file name using input file name
        FILELOG = FILENAME ".new"               # create new file

        FILECP = "cp " FILEOUT " " FILENAME     # copy command
        FILERM = "rm " FILEOUT          # remove strip file
}

# This clause executes for every line
# It copies lines from the input file to the appropriate output file
{
        if (  sub(MY_PAT,NEW_PAT) == 0 )      # test for pattern in line
                print > FILEOUT # save to stripped file if pattern not found
        else
                print > FILELOG # save to remove log if pattern match
}

# This clause is executed when the last line of the last file is reached
END {
        system(FILECP)  # clean up last file
        system(FILERM)
}

Then execute:

Code:
awk -f strip.awk <data.file>


It will create a file with .new with the removed lines....
 

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LEARN ABOUT CENTOS

git-stripspace

GIT-STRIPSPACE(1)						    Git Manual							 GIT-STRIPSPACE(1)

NAME

       git-stripspace - Remove unnecessary whitespace

SYNOPSIS

       git stripspace [-s | --strip-comments] < input

DESCRIPTION

       Clean the input in the manner used by Git for text such as commit messages, notes, tags and branch descriptions.

       With no arguments, this will:

       o   remove trailing whitespace from all lines

       o   collapse multiple consecutive empty lines into one empty line

       o   remove empty lines from the beginning and end of the input

       o   add a missing 
 to the last line if necessary.

       In the case where the input consists entirely of whitespace characters, no output will be produced.

       NOTE: This is intended for cleaning metadata, prefer the --whitespace=fix mode of git-apply(1) for correcting whitespace of patches or
       files in the repository.

OPTIONS

       -s, --strip-comments
	   Skip and remove all lines starting with comment character (default #).

       -c, --comment-lines
	   Prepend comment character and blank to each line. Lines will automatically be terminated with a newline. On empty lines, only the
	   comment character will be prepended.

EXAMPLES

       Given the following noisy input with $ indicating the end of a line:

	   |A brief introduction   $
	   |   $
	   |$
	   |A new paragraph$
	   |# with a commented-out line    $
	   |explaining lots of stuff.$
	   |$
	   |# An old paragraph, also commented-out. $
	   |	  $
	   |The end.$
	   |  $

       Use git stripspace with no arguments to obtain:

	   |A brief introduction$
	   |$
	   |A new paragraph$
	   |# with a commented-out line$
	   |explaining lots of stuff.$
	   |$
	   |# An old paragraph, also commented-out.$
	   |$
	   |The end.$

       Use git stripspace --strip-comments to obtain:

	   |A brief introduction$
	   |$
	   |A new paragraph$
	   |explaining lots of stuff.$
	   |$
	   |The end.$

GIT

       Part of the git(1) suite

Git 1.8.3.1							    06/10/2014							 GIT-STRIPSPACE(1)
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