How to Find Out Whether a Package Is Installed in Linux

Use yum command or rpm command to determine whether a given package is installed or not in Red Hat and their clones like CentOS, Oracle Linux.

How do I know if a package is installed Linux?
How do I find where a Linux package is installed?
How do I know if mutt is installed on Linux?
How do I get a list of installed programs in Linux?
How do I find where a program is installed Ubuntu?
How do I know if Xclock is installed on Linux?
How do I find where something is installed?
How do I know if JQ is installed on Linux?
How do I install packages in Linux?
How do I see what packages are installed in Unix?
How do I enable X11 forwarding in Linux?
What is Xclock in Linux?
How install Xclock in Linux?

How do I know if a package is installed Linux?

To view the latest installed date of package, just run the following rpm command format. Alternatively use rpm with qi option to view the latest installed date of package. Alternatively use rpm with q option alone to view the latest installed date of package.

How do I find where a Linux package is installed?

Possible Duplicate:

If your distribution uses rpm , you can use rpm -q --whatprovides to find the package name for a particular file and then rpm -q -a to find out what files a package installed. – ...
With apt-get , if the package is installed use dpkg -L PKGNAME , if it isn't use apt-file list . –

How do I know if mutt is installed on Linux?

a) On Arch Linux

Use pacman command to check if the given package is installed or not in Arch Linux and its derivatives. If the below command returns nothing then the 'nano' package is not installed in system. If it is installed, the respective name will be displayed as follows.

How do I get a list of installed programs in Linux?

4 Answers

Aptitude-based distributions (Ubuntu, Debian, etc): dpkg -l.
RPM-based distributions (Fedora, RHEL, etc): rpm -qa.
pkg*-based distributions (OpenBSD, FreeBSD, etc): pkg_info.
Portage-based distributions (Gentoo, etc): equery list or eix -I.
pacman-based distributions (Arch Linux, etc): pacman -Q.

How do I find where a program is installed Ubuntu?

If you know the name of the executable, you can use the which command to find the location of the binary, but that doesn't give you information on where the supporting files might be located. There's an easy way to see the locations of all the files installed as part of the package, using the dpkg utility.

How do I know if Xclock is installed on Linux?

How to identify if xclock is installed and if it is not installed, how to install it. Use rpm -qa to find if the package xorg-x11-apps is installed. The above command returns nothing. Which means that there is no rpm for xclock installed on the system.

How do I find where something is installed?

How to Determine What's Installed on Your Machine

Settings, Apps & features. In Windows Settings, go to the Apps & features page. ...
Start menu. Click your Start menu, and you'll get a long list of installed programs. ...
C:\Program Files and C:\Program Files (x86) Additional locations to examine are the C:\Program Files and C:\Program Files (x86) folders. ...
The PATH.

How do I know if JQ is installed on Linux?

Procedure

Run the following command and enter y when prompted. (You will see Complete! upon sucessful installation.) ...
Verify the installation by running: $ jq --version jq-1.6. ...
Run the following commands to install wget: $ chmod +x ./jq $ sudo cp jq /usr/bin.
Verify the installation: $ jq --version jq-1.6.

How do I install packages in Linux?

To install a new package, complete the following steps:

Run the dpkg command to ensure that the package is not already installed on the system: ...
If the package is installed already, ensure it is the version you need. ...
Run apt-get update then install the package and upgrade:

How do I see what packages are installed in Unix?

3 Ways to List All Installed Packages in RHEL, CentOS and Fedora

Using RPM Package Manager. RPM (RPM Package Manager) formerly known as Red-Hat Package Manager is an open source, low-level package manager, which runs on Red Hat Enterprise Linux (RHEL) as well as other Linux such as CentOS, Fedora and UNIX systems. ...
Using YUM Package Manager. ...
Using YUM-Utils.

How do I enable X11 forwarding in Linux?

Go to Connection, select SSH, and then click Then, click on Browse to select the private key generated earlier If you are using key based authentication. Go to Connection, select SSH, and then click on Then, select enable X11 forwarding.

What is Xclock in Linux?

Description. The xclock command gets the time from the system clock, then displays and updates it in the form of a digital or analog clock. ... You can also select flags to specify the presentation of the clock, including chime and update frequency, colors, and border width.

How install Xclock in Linux?

Installing the package providing the xclock command

As you can see in the output above, the package xorgs-x11-apps provide the xclock command. To install the xorg-x11-apps package run the below command. # yum install xorg-x11-apps ... el7 base 307 k Installing for dependencies: libXaw x86_64 1.0.