notes

Package Management

Dpkg

  1. To list all packages installed on the system, from a terminal prompt type 
     dpkg -l
 dpkg --get-selections
  2. To list the files installed by a package, in this case the ufw package 
     dpkg -L ufw
  3. If you are not sure which package installed a file 
     dpkg -S /etc/host.conf
  4. Get info about package 
     dpkg -p package-name

Apt

  1. To get Packet Source Lists 
     ls /etc/apt/source.list.d/
  2. To find package by keywords in their description use 
     apt-cache search keyword
  3. To get the information about not installed package 
     apt-cache show package-name
  4. To list package dependencies 
     apt-cache depends package-name
  5. To update list of latest versions of the software from Packet Source Lists 
     apt update

    This command doesn’t install any new versions, only updates their list

  6. To upgrade packages version 
     apt upgrade -y
  7. To Remove unused packages 
     apt autoremove -y
  8. To browse packages navigate to packages.ubuntu.com

RPM

  1. List all packages installed on the system 
     rpm -qa
  2. Get package info 
     rpm -qi package-name
  3. List all files within a package 
     rpm -ql package-name
  4. List all configuration files within a package 
     rpm -qc package-name
  5. List all documentation files within a package 
     rpm -qd package-name
  6. To query data about not installed package 
     rpm -qpi file # option p means query file
  7. Get all scripts which are installed during the package installation 
     rpm -qp --scripts pacakge-file
  8. Get package name by file 
     rpm -qf file-name

Yum

  1. Yum config is available at /etc/yum.conf
  2. The list of repositories is stored at /etc/yum.repos.d/
  3. Find which package provide executable file 
     yum provides exec-name
  4. Find if package available within installed repos 
     yum search package-name
  5. Get info about package 
     yum info package-name
  6. To only download package without installing it 
     yumdownloader package-name
  7. Check for updates 
     yum check-update
  8. Update package [all packages by default] 
     yum update [package-name]
  9. View what was installed on the system 
     yum history list
  10. View the info about transaction 
     yum history info transaction-id
  11. Rollback specific transaction 
     yum history undo transaction-id
  12. Apply only security updates 
     yum update --security
  1. Ubuntu Package Management