[Cialug] Bash Array Variables

[Jeffrey Ollie]

Yes, *especially* init scripts. Which is why systemd quickly replaced
SYSV-style init systems.

On Thu, Aug 11, 2022 at 11:49 AM Dave Hala <dave at 58ghz.net> wrote:

> Including init scripts? <j/k>.
>
> On Thu, Aug 11, 2022 at 11:45 AM Jeffrey Ollie <jeff at ocjtech.us> wrote:
>
> > IMNSHO, anything that ends up being more than a page full of bash
> scripting
> > should be done in Python/Perl/<insert language of choice here>.
> >
> > On Thu, Aug 11, 2022 at 9:59 AM Todd Walton <tdwalton at gmail.com> wrote:
> >
> > > $ cat test.sh
> > > #!/bin/bash
> > > echo "VARS1: ${VARS1[@]}"
> > > echo "BARS2: $BARS2"
> > >
> > > $ VARS1=(tom jerry)
> > > $ BARS2=bradybunch
> > > $ ./test.sh
> > > VARS1:
> > > BARS2:
> > >
> > > $ export VARS1=(tom jerry)
> > > $ export BARS2=bradybunch
> > > $ ./test.sh
> > > VARS1:
> > > BARS2: bradybunch
> > >
> > > $ # zomg, no VARS1
> > > $ man bash | awk '/^BUGS/,0'
> > > BUGS
> > >        It's too big and too slow.
> > >
> > >        There are some subtle differences between bash  and  traditional
> > >  ver‐
> > >        sions of sh, mostly because of the POSIX specification.
> > >
> > >        Aliases are confusing in some uses.
> > >
> > >        Shell builtin commands and functions are not
> > stoppable/restartable.
> > >
> > >        Compound  commands  and  command sequences of the form `a ; b ;
> c'
> > > are
> > >        not handled gracefully when process suspension is attempted.
> >  When
> > >  a
> > >        process is stopped, the shell immediately executes the next
> > command
> > > in
> > >        the sequence.  It suffices to place the sequence of  commands
> > >  between
> > >        parentheses  to  force  it  into a subshell, which may be
> stopped
> > as
> > > a
> > >        unit.
> > >
> > >        Array variables may not (yet) be exported.
> > >
> > >        There may be only one active coprocess at a time.
> > >
> > > GNU Bash 5.1                   2020 October 29
> > >  BASH(1)
> > >
> > > $ # "Array variables may not (yet) be exported."
> > > _______________________________________________
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> > >
> >
> >
> > --
> > Jeff Ollie
> > The majestik møøse is one of the mäni interesting furry animals in
> Sweden.
> > _______________________________________________
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> >
>
>
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-- 
Jeff Ollie
The majestik møøse is one of the mäni interesting furry animals in Sweden.