[Cialug] The systemd Init System

[Andrew Denner]

Another option if you want to have a centralized service would be to set up
NFS over ssh.
https://gist.github.com/proudlygeek/5721498

On Mon, Feb 15, 2016 at 5:20 PM, Todd E Thomas <todd.dsm at gmail.com> wrote:

> @kristau: Getting a modified time is as simple as calling a function that
> contains a line like:
> fsoModTm="$(stat -c '%y' $1 2>/dev/null)"
>
> Where the file name is passed as the argument "$1". There are lots of
> printing/format options
> <
> http://www.gnu.org/software/coreutils/manual/html_node/stat-invocation.html#stat-invocation
> >
>  though.
>
> Also, formatting output is as easy as experimenting with printf
> <https://linuxconfig.org/bash-printf-syntax-basics-with-examples>. The
> echo
> program just doesn't have the flexibility that printf offers
> <http://www.gnu.org/software/bash/manual/html_node/Bash-Builtins.html>.
> The
> upside you'll notice is that if you learn printf, these formatting rules
> tend to extend from C (and derivatives) to Bash, Python, and many other
> languages that call this library. Learn once, use many.
> ---
>
> @Walton props on the wooledge bash wiki reference; the guy that writes the
> bash language contributes to these pages AND hangs out in the same #bash
> IRC channel as Greg Wooledge. It's one of the few places to get reliable
> (tested) explanations. Ironic that I didn't reference it once (this time).
> ---
>
> Back to the subject line, I see a lot of non-technical oppositions to
> systemd; IE: I don't want to learn something new. The answer, you're
> already using it or you're not:
>
> if you see something like this:
>
> *$ sudo service sshd restart; echo $?*  # System V style
> ... (lots of output)
> *Redirecting to /bin/systemctl restart  sshd.service*
> 0
>
> Then you are on systemd. The line in blue indicates than your request is
> being passed (via wrapper) to systemd.
>
> *This is only a convenience*; it exists so you have time to go through your
> scripts and update them. When it goes away, it's gone.
>
> Service/chkconfig are only there for humans; they no-longer have any
> technical purpose. As evidenced by:
>
> $ chkconfig --list ssh
>
> Note: This output shows SysV services only and does not include native
>       systemd services. SysV configuration data might be overridden by
> native
>       systemd configuration.
>
>       If you want to list systemd services use 'systemctl list-unit-files'.
> ...
>
> Fedora/Debian have already implemented systemd. That means their new
> versions, and all derivatives, already have it. This is 90% of the Linux
> pie. But more beyond that, the future has only ever held 3 options for any
> of us:
>
>    - Ride the wave
>    - Redirect the wave (voice your opinions at steering meetings), or
>    - Get crushed by the wave
>
> Since the future can't be stopped all the agonizing along the way only
> represents unnecessary overhead.
>
> TT
>
>
> On Fri, Feb 12, 2016 at 4:02 PM, kristau <kristau at gmail.com> wrote:
>
> > This Very Much:
> >
> > "Even better, put the modification time in the filename, in YYYYMMDD
> > format, so that glob order is also mtime order. Then you don't need ls
> > or perl or anything. (The vast majority of cases where people want the
> > oldest or newest file in a directory can be solved just by doing
> > this.)"
> >
> > On Fri, Feb 12, 2016 at 1:08 PM, Todd Walton <tdwalton at gmail.com> wrote:
> > > On Wed, Dec 16, 2015 at 11:48 AM, Todd Walton <tdwalton at gmail.com>
> > wrote:
> > >
> > >>
> > >> Huh. I was about to respond to Scott in this way, but you beat me to
> it,
> > >> Jim. Although I'd probably say it died soft, not hard. The remnants
> are
> > >> still there.
> > >>
> > >> The root problem, imho, is that the "one thing" unit needs to be
> > >> refactored, updated for the modern age. And text output is great at
> the
> > end
> > >> of the pipe, but it's not always great for the core utils talking to
> > each
> > >> other, so you get things like find with the mutant arms of -exec and
> > >> -print0.
> > >>
> > >> And oh how I wish someone would rewrite ls to sort better, align
> better,
> > >> etc.
> > >>
> > >
> > > And on that note... Enumerating files or doing stuff with files:
> > > http://mywiki.wooledge.org/ParsingLs
> > >
> > > ===============
> > > # Good!
> > > for f in *; do
> > >     [[ -e $f ]] || continue
> > >     ...
> > > done
> > > ===============
> > > ===============
> > > # BAD! Don't do this!
> > > for f in $(ls); do
> > >     ...
> > > done
> > > ===============
> > >
> > > *cough* objects *cough*
> > >
> > > --
> > > Todd
> > > _______________________________________________
> > > Cialug mailing list
> > > Cialug at cialug.org
> > > http://cialug.org/mailman/listinfo/cialug
> >
> >
> >
> > --
> > Tired programmer
> > Coding late into the night
> > The core dump follows
> > _______________________________________________
> > Cialug mailing list
> > Cialug at cialug.org
> > http://cialug.org/mailman/listinfo/cialug
> >
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> http://cialug.org/mailman/listinfo/cialug
>