04-16-2009
grep command to replace multiline text from httpd.conf file on Fedora
Hi,
I am a newbie to shell scripting and to Linux environment as well.
In my project I am trying to search for following text from the httpd.conf file
<Directory '/somedir/someinnerdir'>
AllowOverride All
</Directory>
and then remove this text and again rewrite the same text.
The reason to do this rewriting is that the script will be run on first installation of the web app, but it may again be run some time later as other part of this shell script is performing other tasks as well. So for first time this text wont be found and will simply be written but later again when script is run this text will be found and will need to be removed and the written again.
So the part of my script with which I am trying to achieve this is something like :
grep -ve "<Directory '/somedir/someinnerdir'>\\n
AllowOverride All\\n
</Directory>" > tmp_direct
echo -e "<Directory '/somedir/someinnerdir'>\\n
AllowOverride All\\n
</Directory>" >> tmp_direct
mv tmp_direct >> /etc/httpd/conf/httpd.conf
I dont have the code in front of me currently so there may be some syntactical errors above but the logic/coding is same.
Above code fragment is not able to do what I want to achieve as the grep command doesnt support multiline searching.
My OS is Fedora 8.
Can you please suggest something in this code to achieve what is needed or may be some other alternative.
Any help in this regard will be highly appreciated.
Thanks in advance.
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httpd(8) System Manager's Manual httpd(8)
NAME
httpd - Apache hypertext transfer protocol server
SYNOPSIS
httpd [ -d serverroot ] [ -f config ] [ -C directive ] [ -c directive ] [ -D parameter ]
httpd [ -h ] [ -l ] [ -L ] [ -v ] [ -V ] [ -t ] [ -X ]
DESCRIPTION
httpd is the Apache HyperText Transfer Protocol (HTTP) server program. It is designed to be run as a standalone daemon process. When used
like this it will create a pool of child processes to handle requests. To stop it, send a TERM signal to the initial (parent) process. The
PID of this process is written to a file as given in the configuration file.
This manual page only lists the command line arguments. For details of the directives necessary to configure httpd see the Apache manual,
which is part of the Apache distribution or can be found at http://httpd.apache.org/. Paths in this manual may not reflect those compiled
into httpd.
OPTIONS
-d serverroot
Set the initial value for the ServerRoot directive to serverroot. This can be overridden by the ServerRoot command in the con-
figuration file. The default is /etc/httpd.
-f config Execute the commands in the file config on startup. If config does not begin with a /, then it is taken to be a path relative
to the ServerRoot. The default is conf/httpd.conf.
-C directive
Process the configuration directive before reading config files.
-c directive
Process the configuration directive after reading config files.
-D parameter
Sets a configuration parameter which can be used with <IfDefine>...</IfDefine> sections in the configuration files to condi-
tionally skip or process commands.
-h Output a short summary of available command line options.
-l Output a list of modules compiled into the server.
-L Output a list of directives together with expected arguments and places where the directive is valid.
-S Show the settings as parsed from the config file (currently only shows the virtualhost settings).
-t Run syntax tests for configuration files only. The program immediately exits after these syntax parsing with either a return
code of 0 (Syntax OK) or return code not equal to 0 (Syntax Error). If -D DUMP_VHOSTS is also set, details of the virtual host
configuration will be printed.
-v Print the version of httpd , and then exit.
-V Print the version and build parameters of httpd , and then exit.
-X Run httpd in debug mode. Only one worker will be started and the server will not detach from the console.
FILES
/etc/httpd/conf/httpd.conf
/etc/mime.types
/etc/httpd/conf/magic
/var/log/httpd/error_log
/var/log/httpd/access_log
/var/run/httpd.pid
February 1997 httpd(8)