How do I know if a package is installed in Linux?
Use dpkg command, which is package manager for Debian. Use file /var/lib/dpkg/available to find out all package names available to you.
How do I know if Deb package is installed?
List Installed Packages with dpkg-query. dpkg-query is a command line that can be used to display information about packages listed in the dpkg database. The command will display a list of all installed packages including the packages versions, architecture, and a short description.
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 you check if a package is installed in Terminal?
Open the terminal application or log in to the remote server using ssh (e.g. ssh user@sever-name ) Run command apt list —installed to list all installed packages on Ubuntu. To display a list of packages satisfying certain criteria such as show matching apache2 packages, run apt list apache.
How do I know if yum package is installed?
How to check installed packages in CentOS
- Open the terminal app.
- For remote server log in using the ssh command: ssh user@centos-linux-server-IP-here.
- Show information about all installed packages on CentOS, run: sudo yum list installed.
- To count all installed packages run: sudo yum list installed | wc -l.
How can I tell if sudo is installed?
To check whether the sudo package is installed on your system, open up your console, type sudo , and press Enter . If you have sudo installed the system, will display a short help message. Otherwise, you will see something like sudo command not found .
Is jq installed by default?
jq is not installed by default on all systems #10.
How do I get jq on Linux?
Install
- Open your sources file in a text editor: sudo vim /etc/apt/sources.list.
- Then re-index apt-get so that it can find jq : sudo apt-get update.
- Then do the normal install and you should be the proud new user of jq ! sudo apt-get install jq.
What is jq in Linux?
jq is a Linux command line utility that is easily used to extract data from JSON documents. The source of a JSON document can be a response from a CLI command or the result of a REST API call, files retrieved from remote locations or read from local storage.