… is a matter of taste, but this is (part of) my list:

# For general use:
apt-get install aptitude zsh less strace psmisc rcs screen \
                rsync sshfs ntpdate host exim4-daemon-light \
                sudo file bc mlocate man cvs patch [uemacs|nano]
# For some diagnostics
apt-get install pciutils iftop tcpdump lshw
# For systems running on the "bare metal"
apt-get install smartmontools ethtool
# For server maintenance
apt-get install munin-node munin-plugins-extra sysstat
# For development use
apt-get install dpkg-dev debhelper devscripts liburi-perl \
                fakeroot build-essential autoconf bison \
                autotools-dev sharutils

At least for uemacs you need to access the /usr/local repositories. Get it by

wget -O /etc/apt/sources.list.d/usr-local-debian.list -c http://debian.usr-local.de/debian.list

This is outdated

APT::Default-Release "squeeze";

Tested with Debian 10 Buster

/etc/apt/preferences.d/99ul-pin-priorities

# /usr/local Pin Priorities
# Need to be in sync with /etc/apt/sources.list !
# Check with apt-cache policy
 
Package: *
Pin: origin deb.debian.org
Pin-Priority: 500
 
Package: *
Pin: origin security.debian.org
Pin-Priority: 500
 
# Package: *
# Pin: origin repo.dovecot.org
# Pin-Priority: 1
 
Package: *
Pin: origin *
Pin-Priority: 1

See:

• https://wiki.debian.org/AptConfiguration#apt_preferences_.28APT_pinning.29

You need to know why apt-key add is deprecated

To change the timezone of a running systems, issue

tzconfig

or¹⁾

dpkg-reconfigure tzdata

depending on your version of Debian.

For unattended installations, the following may work:

debconf-set-selections tzdata.debconf

tzdata.debconf

tzdata tzdata/Areas select Europe
# tzdata tzdata/Areas seen false
tzdata tzdata/Zones/Europe select Berlin
# tzdata tzdata/Zones/Europe seen false

For some versions of Debian, you need to add sec=sys in /etc/exports if you want to use no_root_squash

Reference: Re: NFS and no_root_squash - cannot write as root - permission denied (SOLVED)

update-locale LANG=C LC_CTYPE=de_DE LANGUAGE

locale

sudo apt-get install devscripts
apt-get source <package>
# If you start here: dpkg-source -x <package>.dsc
cd <packagedir>
# generating new changelog entry with local version suffix for distribution lenny:
export DEBEMAIL="${DEBEMAIL:-peter@foo.bar}"
export DEBFULLNAME="${DEBFULLNAME:-Peter Foobar}"
dch -l .ul~lenny -D lenny
dpkg-buildpackage -rfakeroot

This works e.g. for the Clock xfce4-panal applet.

Do as root:

sed -e 's/^week.*$/&\nfirst_weekday\t2/g' /usr/share/i18n/locales/en_US  > /usr/local/share/i18n/locales/en_US
locale-gen

GOSH!
Yeah - it's as easy as that. The tricky part is to what to do

References:

• mozycan's answer to "Can I make panel's calendar week start on Monday instead of Sunday?" on Reddit
• less /usr/sbin/locale-gen

Also quite interesting while not directly related to my solution:

• 0xC0000022L's answer to "Change a locale definition (as opposed to a locale setting)" on Stackexchange.

locale Xfce

Linux Debian