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Full Discussion: deleting lines
Top Forums Shell Programming and Scripting deleting lines Post 35738 by ajnabi on Thursday 1st of May 2003 02:15:26 PM
Old 05-01-2003
deleting lines following pattern

this script deletes line with pattern and again search for pattern and deletes it ..
May be i haven't explained properly...
Once i delete the line with pattern i need to delete all the lines after the pattern till the time it sees a blank line.
I am working on database file ..
which is in this format ..
OBJECT="NAME" ACTION="REDEFINE" "NAME_A"="KAJNABI-XYZ"
DESCRIPTION="FGH"
.
.
.
.
AUTO_RESET="0"
.
.
.
***************BLANK LINE**********
OBJECT="NAME" ACTION="REDEFINE" "NAME_A"="AJNABI-GFT"
DESCRIPTION="GFR"
.
.
.
.
AUTO_RESET="0"
.
.
.

OBJECT="NAME" ACTION="REDEFINE" "NAME_A"="KAJNABI-XYZ"
DESCRIPTION="FGH"
.
.
.
.
AUTO_RESET="0"
.
.
.

WHAT i need to do is delete line with pattern say KAJNABI and delete all the lines after it till it sees the blank line .. and again search for the pattern and does the same again ...
I understand that i will have to use the loop but how exactly I am going to do this .. makes me confused ....

thanks
 

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GREP(1) 						      General Commands Manual							   GREP(1)

NAME
grep - search a file for lines containing a given pattern SYNOPSIS
grep [-elnsv] pattern [file] ... OPTIONS
-e -e pattern is the same as pattern -c Print a count of lines matched -i Ignore case -l Print file names, no lines -n Print line numbers -s Status only, no printed output -v Select lines that do not match EXAMPLES
grep mouse file # Find lines in file containing mouse grep [0-9] file # Print lines containing a digit DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1 occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is returned. SEE ALSO
cgrep(1), fgrep(1), sed(1), awk(9). GREP(1)
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