Re: better init.d/* : who carres ?

["Miquel van Smoorenburg" <miquels@cistron.nl>]

In article <[🔎] 20050824145040.GA6034@xpeerience.u-strasbg.fr>,
Marc Chantreux  <marc.chantreux@ulpmm.u-strasbg.fr> wrote:
>there are a lot of things in /etc/init.d/*, and {pre,post}inst
>scripts that can be rewritten more efficiently ( i think ).
>
>for example, in /etc/init.d/mysqld
>
>mysqld_get_param() {
>        /usr/sbin/mysqld --print-defaults \
>                | tr " " "\n" \
>                | grep -- "--$1" \
>                | tail -n 1 \
>                | cut -d= -f2
>}
>
>can be written like :
>
>mysqld_get_param () {
>    local string=$( /usr/sbin/mysqld --print-defaults | grep -o --
>"--$1=[^ ]*" )
>    echo ${string#*=}
>}
>
>that are not bugs so i wonder if package maintainers where pleased if i
>reportbug those lines as wishlist.

Make sure you use only POSIX features when doing this. I think
"grep -o" is a GNU extension, FreeBSD doesn't have it for example.

So in this case, the solution below is better (and shorter):

mysqld_get_param () {
    /usr/sbin/mysqld --print-defaults |
    sed -ne "s/^.*--$1=\\([^ ]\\+\\).*\$/\\1/p"
}

Mike.