Ubuntu
Which package contains file
apt-file search filename dpkg -S /usr/sbin/apache2
List contents of package
apt-file list packagename dpkg -c <$package.deb> dpkg -c pgpool2
Update apt-file database
apt-file update
updates the list of available packages and their versions
apt-get update
upgrade single package
apt --only-upgrade install apache2
show installed packages in cronological order
cat /var/log/dpkg.log* | grep "\ install\ " | sort | less
Installed packages.
dpkg --get-selections apt-get install openssh-client openssh-server
List packages on one machine and install on another.
dpkg --get-selections > installed-software dpkg --set-selections < installed-software dselect
Upgrade.
sudo apt-get -y update sudo apt-get -y upgrade
Which package provides.
http://packages.ubuntu.com/
List available linux packages.
apt-cache pkgnames
install local deb packages
sudo dpkg -i 1.deb 2.deb
install from experimental
# add next row to /etc/apt/sources.list and do an apt-get update deb http://ftp.debian.org/debian/ experimental main contrib non-free # Then install latest version of ekiga. apt-get -t experimental install ekiga
which version of debian
lsb_release
add gpg key
gpg --keyserver subkeys.pgp.net --recv-keys AED4B06F473041FA gpg -a --export AED4B06F473041FA | sudo apt-key add -
clean /var/cache/apt
sudo apt-get clean
which version is available and installed(*** means installed)
apt-cache policy apache2-bin
Read values from the debconf database
debconf-get-selections | grep ^iptables-persistent
Set value in debconf database
echo newrelic-php5 newrelic-php5/application-name string "blablabla" | debconf-set-selections
dowload deb
sudo apt-get install --download-only --reinstall sudo
verify deb package(changes)
checksums are stored /var/lib/dpkg/info/elasticsearch.md5sums
dpkg --verify elasticsearch ??5?????? c /etc/elasticsearch/elasticsearch.yml ??5?????? c /etc/elasticsearch/jvm.options
extract deb
dpkg-deb -xv elasticsearch_7.9.3_amd64.deb .
configure networks
/etc/netplan/10-eth0.yaml netplan apply
add static route
/etc/network/interfaces
#--------------------------------------------# # Setup eth0 - connected to private LAN/VLAN # #--------------------------------------------# auto eth0 allow-hotplug eth0 iface eth0 inet static address 10.70.201.5 netmask 255.255.255.192 ### Ubuntu Linux add persistent route command ### post-up route add -net 10.0.0.0 netmask 255.0.0.0 gw 10.70.201.6
add static route netplan way
network: ethernets: enp0s3: dhcp4: false addresses: [192.168.1.202/24] gateway4: 192.168.1.1 nameservers: addresses: [8.8.8.8,8.8.4.4,192.168.1.1] routes: - to: 172.16.0.0/24 via: 192.168.1.100 version: 2 # netplan apply
enable sysstat
apt -y install sysstat sed -i 's/ENABLED="false"/ENABLED="true"/g' /etc/default/sysstat systemctl restart sysstat