nixCraft

jaysunn · #1 (**permalink**) 05-07-2009, 07:34 PM

Hello Nixcraft Users:

I am looking for a shell script or command to automate a process of opening many files in a directory and changing a string of text. Example:

I have a apache web server that uses virtual hosting. There are approximately 2300 vhost entries or files. So in the directory /usr/local/apache/conf/vhosts/ there are 2300 files like this:

Code:

<virtualhost *>
ServerName    example.com
ServerAlias    www.example.com
DocumentRoot    /export/home/phpuser/docrootx/kuph
DirectoryIndex    index.php 
ServerAdmin user@example.com 
<Directory     /export/home/phpuser/docrootx/kuph>  
RewriteEngine On  
RewriteBase /  
RewriteRule ^(.*)/([0-9]+)$ /pages/$2\.php  
Options +FollowSymLinks -Indexes  
</Directory>  
ErrorDocument 404 /stn_page_server.php  
ErrorDocument 403 /stn_page_server.php  
CustomLog logs/thefox969/access_log combined 
ErrorLog  logs/thefox969/error_log 
</virtualhost>

The goal that I have is I want to place a # in front of ErrorLog to disable logging on all 2300 vhosts. I am sure this can be done with SED or PERL. Either way would be fine. Also I have to do bulk edits on these vhosts alot. I would like to be able to modify this script as needed. For redirects and aliases etc...

Thanks for your help

Jaysunn

nixcraft · #2 (**permalink**) 05-08-2009, 05:58 PM

Yes, sed, grep and friends can do the trick. Here is sed example:

Code:

sed -i"_$(date +"%d_%m_%y_%H_%M_%S%P").bak" 's/ErrorLog/#ErrorLog/g' /path/to/input.conf

It will comment out errorlog line and also save file as backup /path/to/input.conf_date.bak.

To update all files in /usr/local/apache/conf/vhosts/ you need to write a for loop or something like that...

Create a script called /root/scripts/updatevhost.sh

Code:

#!/bin/bash
_INPUT=$1
_NOW=$(date +"%m-%d-%y")
_BAKUPDIR=/root/bakup/httpd/$NOW


usage(){
    echo "Usage: $(basename $0) /path/to/vhost.httpd.conf"
    exit 1
}

[ $# -eq 0 ] && usage
[ ! -d $_BAKUPDIR ] && mkdir -p $_BAKUPDIR

if [ -w $_INPUT ]
then
    /bin/cp $_INPUT  "$_BAKUPDIR/$(basename $_INPUT).$(date +"%d_%m_%y_%H_%M_%S%P").bak"
    sed -i'.bak' 's/ErrorLog/#ErrorLog/g' $_INPUT
else
    echo "Error: File $_INPUT is not writable"
    exit 2
fi

Now run it as follows

Code:

find /usr/local/apache/conf/vhosts/ -iname "*.conf" -print0 | while read -d $'\0' file; do /root/scripts/updatevhost.sh "$file"; done

PS: Try this in testing dummy environment first and once satisfied move to production. Also, make sure you have backup all files before you modify anything. I won't be responsible for data loss

good luck.

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nixCraft

Shell Script To change strings / text in a text file

Shell Script To change strings / text in a text file

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