Which Package Contains /Usr/Bin/Less for Ubuntu 19.04?
As in the Title. Neither Dpkg -S /Usr/Bin/Less nor Apt-File Search /Usr/Bin/Less Produces Anything Useful. Does It Mean That There's a Bug or That Less Really...
As in the title. Neither dpkg -S /usr/bin/less nor apt-file search /usr/bin/less produces anything useful.
Does it mean that there's a bug or that less really doesn't come from any package?
(In case you're wondering why I need to know the answer, I find that the less is an old version 487 instead of 530 that has a feature I want.)
$ which less
/usr/bin/less
$ dpkg -S /usr/bin/less
dpkg-query: no path found matching pattern /usr/bin/less
$ apt-file search /usr/bin/less
colorized-logs: /usr/bin/lesstty
libcss-lessp-perl: /usr/bin/lessp
node-less: /usr/bin/lessc
1 Answer
That's because /usr/bin/less is a symbolic link:
$ ls -l /usr/bin/less
lrwxrwxrwx 1 root root 9 Jul 21 2017 /usr/bin/less -> /bin/less
The latter is provided by package less
$ dpkg -S $(realpath $(which less))
less: /bin/less
The symbolic link is one of several created by the postinst script during package configuration:
case "$1" in
configure)
for file in lessfile lesspipe lesskey lessecho less; do
if [ ! -e /usr/bin/$file ]; then
ln -s /bin/$file /usr/bin/$file
fi
done
.
.
.
(The same script installs less as the default pager under update-alternatives.)
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