Why not do sed in place edit:
http://stackoverflow.com/questions/15559821/using-sed-to-insert-text-at-end-of-line-matching-string

James Finstrom


ಠ_ಠ **


On Thu, Jul 25, 2013 at 11:46 AM, Lisa Kachold <lisakachold@obnosis.com>wrote:

> I am trying to append a variable from an adduser script to a line in a
> config file (for samba).
>
> Can someone assist me here?
>
> The function is in BOLD below:  *createNewSambaAllow()*
> *
> *
> It's not working to put the new line in the smb.conf file?
>
> Cry!  Beg!  Plead!
>
>
> Note:  This is a assuming I already have a user named "unique" in my
> smb.conf line.
>
> #####################################start
> script#######################################3
> #!/bin/bash
>
> # Add shell and samba user.
>
> _now=$(date +"%m_%d_%Y")
> basedir=/home
> usershell=/bin/bash
>
> ## Declare all the functions first
>
> ## function to check if user already exists on system
> ifUserExits(){
>         grep $1 /etc/passwd > /dev/null
>         [ $? -eq 0 ] && return $TRUE || return $FALSE
> }
>
> ## function to create the user with default shell and home directory
> passed from below
> createNewUser(){
>         if /usr/sbin/useradd "$@"
>         then echo "User $6 Added"
>         fi
> }
>
> ## function to set the user password
> createPassword(){
>         if echo -e "$1\n$1\n" | echo $1:$2 |chpasswd
>         then echo "Password Created for User $2"
>         fi
> }
>
> ## function to setup samba user
> createNewSambaUser(){
>         if (echo $1; echo $1) | /usr/bin/smbpasswd -as $2
>         then echo "Samba Account for User $2 Added"
>         fi
> }
>
> *#####This is the part I have issues with:*
> *
> *
> *## function to add user to the Samba config and restart daemon*
> *createNewSambaAllow(){*
> *        # Copy to backup the config:*
> *         cp /etc/samba/smb.conf /etc/samba/smb.conf-$_now*
> *        # stuff the line we need to append to into a variable called
> $oldline*
> *        # this is supposed to look like this "valid users = unique
> thing1 thing2 thing3 alice"*
> *        oldline = grep unique /etc/samba/smb.conf*
> *        # delete the old line in the smb.conf*
> *        sed '/unique/d' /etc/samba/smb.conf >>/etc/samba/smb.conf*
> *        # dump the old line and the new user into the bottom of smb.conf*
> *        echo $oldline && echo $username  >> /etc/samba/smb.conf*
> *        # restart samba*
> *      /etc/init.d/samba restart*
> *        echo "Samba Config Added and Daemon restarted"*
> *}*
>
> ### This is just for your info #####
>
> ## make sure root is running script
> if [ $(id -u) -ne 0 ]
> then
>     echo "You must be root or use sudo to run this script!"
>     exit 2
> fi
>
> ## get username from input
> read -p "Enter username : " username
>
> ## if user doesn't exist, add user
> if ( ! ifUserExits $username )
>
> then
>         ## get password from input
>         read -p "Enter password : " password
>         createNewUser -m -b $basedir -s $usershell $username
>         createPassword $password $username
>         createNewSambaUser $password $username
>         createNewSambaAllow $username
> else
>        ## oops, username already being used
>         echo "Username \"$username\" already exists"
>        exit 3
> fi
>
> # End Bash Example
>  --
>
> Anyone?
>
>
> (503) 754-4452 Android
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> **
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