MyScript is adding to much lines to my file.

Question

I want to add a line into the SVNServer.conf file ( svnserver/Repo/Project/conf/svnserver.conf ).
This is a part of the file.
### This file controls the configuration of the svnserve daemon, if you
### use it to allow access to this repository. (If you only allow
### access through http: and/or file: URLs, then this file is
### irrelevant.)
### Visit http://subversion.tigris.org/ for more information.
[general]
### These options control access to the repository for unauthenticated
### and authenticated users. Valid values are "write", "read",
### and "none". The sample settings below are the defaults.
# anon-access = read
# auth-access = write
### The password-db option controls the location of the password
### database file. Unless you specify a path starting with a /,
### the file's location is relative to the directory containing
### this configuration file.
### If SASL is enabled (see below), this file will NOT be used.
### Uncomment the line below to use the default password file.
# password-db = passwd
### The authz-db option controls the location of the authorization
### rules for path-based access control. Unless you specify a path
........ and a lot more of blah da ka
and this is my script that I use ( I use "anon-access = write" just as a test and will be replaced with the auth-access ).
confFile=$REPOSITORY_PATH"/conf/svnserve.conf"
tmpconfFile=$REPOSITORY_PATH"/conf/tmpsvnserve.conf"
while read line
do
echo "$line" >> $tmpconfFile
if [ "$line" == "# anon-access = read" ]
then
echo "anon-access = write" >> $tmpconfFile
fi
done < $confFile
rm $confFile
mv $tmpconfFile $confFile
chown svn:svn $confFile
chmod 777 $confFile
My Questions:
1. How on earth is it possible that I have 4 times
anon-access = write
# anon-access = read
anon-access = write
anon-access = write
anon-access = write
anon-access = write
# auth-access = write
### The password-db option controls the location of the password
2. Is it possible to avoid
rm $confFile
mv $tmpconfFile $confFile
chown svn:svn $confFile
chmod 777 $confFile
and have it just replaced or the line inserted using bash?
I guess not, but never ask, never known!

Answer 1

#!/bin/bash
function letsWait()
echo -n "$*"
stty -echo
read answer
stty echo
echo ""
privSVNConf1="anon-access = write"
privSVNConfAppendAtLine1="# anon-access = read"
confFile="/Volumes/Repository/svnserve.conf"
tmpconfFile="/Volumes/Repository/tmpsvnserve.conf"
if grep -q "$privSVNConf1" $confFile; then
This grep will match lines that begin with a # as well as lines that are not commented out (assume # is the comment character). If that is not an issue, then OK.
You could make sure the "anon-access" starts in column 1 using:
if grep -q "^$privSVNConf1" $confFile; then
Notice the ^ at the beginning of the search string.
Continuing on...
echo "conf file already has anon-access = write"
else
( while read line
do
echo "$line"
if [ "$line" == "$privSVNConfAppendAtLine1" ]
then
echo $privSVNConf1
fi
done < $confFile ) > $confFile
This will not work. Bash is going to process the >$confFile BEFORE it opens <$confFile. As a result, the >$confFile will truncate the file first, then when it performs the <$confFile it will see a zero length file and terminate the loop immediately. You will then end up with a zero length $confFile.
<div class="jive-quote">
# letsWait "wait and check file"
# cat $tmpconfFile >$confFile
# rm $tmpconfFile
fi