On 1/14/2018 7:28 AM, john doe wrote:
On 1/14/2018 4:52 AM, Vasyl Vavrychuk wrote:
I would like to list not installed packages in my script. Currently I do
dpkg-query -W -f='${db:Status-Abbrev}${binary:Package}\n'
$PACKAGES | grep -v "^ii" | awk '{print $2}'
As an aside; you don't need grep in this command:
$ <CMD> | awk '!/^ii/{print $2}'
Problem is that dpkg-query outputs information about no matching
packages in stderr in a not suitable for scripts way, for example
dpkg-query -W -f='${db:Status-Abbrev}${binary:Package}\n' git
gawk cmake
un cmake
ii git
dpkg-query: no packages found matching gawk
I there any scriptable way to get information about unmatching packages?
You could try to redirect STDERR to STDOUT:
$ dpkg-query -W -f='${db:Status-Abbrev}${binary:Package}\n' git gawk
cmake 2>&1 | awk '{print $6}'
git
gawk
cmake
Note that my mailer is folding the command.
$ dpkg-query -W -f='${db:Status-Abbrev}${binary:Package}\n' awk git gawk
cmake 2>&1 | awk '!/^ii/ || !/^un/{print $6}'
git
gawk
cmake
--
John Doe
