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Full Discussion: Need to find a string, check the next line, and if it matches certain criteria, replace it with a s
Top Forums Shell Programming and Scripting Need to find a string, check the next line, and if it matches certain criteria, replace it with a s Post 302371831 by frans on Monday 16th of November 2009 10:05:12 AM
Old 11-16-2009
Try this (but a sample could help !)
Code:
#!/bin/bash
Input="data.csv"
I=1
while read LINE
do    #~ find the string that starts with data7
    if [ "${LINE:0:5}" = "data7" ]
    then
        read LINE    #~ if the string on the next line has the word prisoner then replace it with the string in line 1.
        if $(echo "$LINE" | grep -q prisoner)
        then
            head -n$I "$Input" | tail -n1
            (( I ++ ))    #~ the next instance of the pattern would be replaced by the string in line 2 and so on.
        else echo "$LINE"
        fi
    else echo "$LINE"
    fi
done < "$Input" > OutputFile

 

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LEARN ABOUT DEBIAN

gedit

GEDIT(1)						      General Commands Manual							  GEDIT(1)

NAME

       gedit - text editor for the GNOME Desktop

SYNOPSIS

       gedit [OPTION...] [FILE...] [+LINE[:COLUMN]]

DESCRIPTION

       gedit is the official text editor of the GNOME desktop environment.

       While  aiming  at simplicity and ease of use, gedit is a powerful general purpose text editor.  It can be used to create and edit all kinds
       of text files.

       gedit features a flexible plugin system which can be used to dynamically add new advanced features to gedit itself.

OPTIONS

       -b, --background
	      Run gedit in the background.

       --encoding
	      Set the character encoding to be used for opening the files listed on the command line.

       -g, --geometry=GEOMETRY
	      Set the X geometry window size (WIDTHxHEIGHT+X+Y).

       --list-encodings
	      Display list of possible values for the encoding option and exit.

       --new-window
	      Create a new toplevel window in an existing instance of gedit.

       --new-document
	      Create a new document in an existing instance of gedit.

       -s, --standalone
	      Run gedit in standalone mode.

       -w, --wait
	      Open files and block the gedit process.

       --help Prints the command line options.

       --version
	      Output version information and exit.

       FILE   Specifies the file to open when gedit starts. If this is not specified, gedit will load a blank  file  with  an  "Unsaved  Document"
	      label. Multiple files can be loaded if they are separated by spaces.  gedit also supports handling of remote files. For example, you
	      can pass	the  location  of  a  webpage  to  gedit  ,  like  "http://www.gnome.org",  or	load  a  file  from  a	FTP  server,  like
	      "ftp://ftp.gnome.org/robots.txt".

       +LINE  For  the first file, go to the line specified by LINE (do not insert a space between the "+" sign and the number).  If LINE is miss-
	      ing, go to the last line.

       COLUMN For the first file, go to the column specified by COLUMN.  If COLUMN is missing, go to the first column.

BUGS

       If you find a bug, please report it at http://bugzilla.gnome.org/enter_bug.cgi?product=gedit.

AUTHORS

       Paolo Maggi (paolo@gnome.org)

       Paolo Borelli (pborelli@katamail.com)

       Steve Frecinaux (code@istique.net)

       Jesse van den Kieboom (jessevdk@gnome.org)

       Ignacio Casal Quinteiro <icq@gnome.org>

       James Willcox (jwillcox@gnome.org)

       Federico Mena Quintero (federico@novell.com)

       Chema Celorio

								    17 May 2010 							  GEDIT(1)
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