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Top Forums Shell Programming and Scripting Script for searching a pattern in 5 files and deleting the patterns given Post 302337538 by Shazin on Friday 24th of July 2009 10:41:56 AM
Old 07-24-2009
Hi,

I am just trying to search for a word in a file and delete that complete line from the file if that word is present.

Cheers,
Shazin

---------- Post updated at 08:11 PM ---------- Previous update was at 08:06 PM ----------

Hi,

It can also be like this if we take it for a single file:

#!bin/sh

# The pattern that user want to add to the files

echo "Enter the pattern of the redirect"
read value

# check if the user has provided a valid pattern

if [-z "$value"] ; then
echo "You have not entered the pattern" ; exit 1

# If a pattern is entered by the User
# Searches the pattern and deletes the pattern if present in file (file 1) <filename 1>

mkdir /path/dred1
elif [grep "$value" <filename 1> > /path/dred1 && $? == 0] ; then
rm -r /path/dred1
echo "Pattern exist in <filename 1>"
sleep 1000
mkdir /path/olist
sed '/"$value"/d' <filename 1> > /path/olist
/path/olist > <filename 1>
rm -r /path/olist
echo "Pattern deleted"
else
rm -r /path/dred1
echo "Pattern does not exist in <filename 1>"
fi
fi

Please advise
Shazin
 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
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