On Mi, 27 ian 21, 12:38:07, Vincent Lefevre wrote:
> On 2021-01-27 12:02:53 +0100, Emanuel Berg wrote:
> > > Or even better, with dpkg-query(1)
> > >
> > > file-url () {
> > > local debian=https://sources.debian.org/src
> > > local pack=$1
> > > local ver=$(dpkg-query -f '${Version}\n' -W $pack)
> > > local file=$2
> > > local url=$debian/$pack/$ver/$file
> > > echo $url
> > > }
> >
> > Advantage compared to previous version: more stable with
> > dpkg-query, it also saves a fork (no pipe).
>
> But dpkg-query will work only if the package is installed.
>
> With zsh, you can avoid the pipe with zsh expansions:
>
> local ver=${${(M)${(f)"$(aptitude show $pack)"}:#Version:*}#* }
>
> or with apt-cache (which is faster than aptitude):
>
> local ver=${${(M)${(f)"$(apt-cache show --no-all-versions
> $pack)"}:#Version:*}#* }
Instead of parsing output of aptitude one can also ask aptitude to
provide only the needed information.
aptitude search -F %V "?exact-name($pack)"
Kind regards,
Andrei
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