Re: Set verbose Flag Inside if-block

[Sysadmin Lists]

> Well, until someone can convince Chet to re-write Bash to make this flag
> useful, I've come up with a ridiculous workaround:
> 
> $ cat tmpfile.sh
> if true
> then
>         printf "echo foo bar baz\n" | sh -v
> fi
> 
> $ ./tmpfile.sh 
> echo foo bar baz
> foo bar baz
> 
> Being able to selectively echo commands inside if-blocks makes sense. The -v
> flag is a bit of a fraud the way it's currently implemented.
> 
> PS. I don't know why this doesn't work:
> (set -ve; echo $-; echo foo bar baz; set +ve)
> 
> That should create a sub-shell with the v flag set on the entire command line.

It's not great, but it's not vomit-inducing either:

$ cat tmpfile.sh
o=printf\ '%s\n'

if true
then
        var="* foo"
        $o "echo ${var/\*}" | sh -v
        $o "ls -d /tmp/"    | sh -v
        $o "date"           | sh -v
fi

$ ./tmpfile.sh
echo  foo
foo
ls -d /tmp/
/tmp/
date
Mon Apr 17 13:23:42 PDT 2023


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