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Full Discussion: Script for Removing Lines from File / Blocking internet connection
Top Forums Shell Programming and Scripting Script for Removing Lines from File / Blocking internet connection Post 302514619 by ahamed101 on Sunday 17th of April 2011 04:58:52 AM
Old 04-17-2011
Well, if you know which line needs to be removed, you can get the line number and use sed
eg: Lets say you want to remove the line with the string "Remove me from the file"

Code:
#!/bin/ksh
linenum=`grep -n "Remove me from the file" filename | cut -f1 -d":"`
sed -i "${linenum}d" filename

or you can use grep

Code:
#!/bin/ksh
grep -v "Remove me from the file" filename >> filename.$$
mv filename.$$ filename

For blocking the http connections, probably you can use iptables,ipfilters etc

regards,
Ahamed
 

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LEARN ABOUT OPENDARWIN

bzfgrep

BZGREP(1)						      General Commands Manual							 BZGREP(1)

NAME

       bzgrep, bzfgrep, bzegrep - search possibly bzip2 compressed files for a regular expression

SYNOPSIS

       bzgrep [ grep_options ] [ -e ] pattern filename...
       bzegrep [ egrep_options ] [ -e ] pattern filename...
       bzfgrep [ fgrep_options ] [ -e ] pattern filename...

DESCRIPTION

       Bzgrep  is  used to invoke the grep on bzip2-compressed files. All options specified are passed directly to grep.  If no file is specified,
       then the standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and  fed	to
       grep.

       If  bzgrep  is  invoked as bzegrep or bzfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, bzgrep
       uses it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	bzgrep string files
	   for csh: (setenv GREP fgrep; bzgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca). Adapted to bzip2 by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.

SEE ALSO

       grep(1), egrep(1), fgrep(1), bzdiff(1), bzmore(1), bzless(1), bzip2(1)

																	 BZGREP(1)
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