How to check if gparted is installed or not through terminal?
5342
How can I check if a package is installed (no superuser privileges)?
123153
How to tell if a certain package exists in the apt repos?
116869
Is it possible to know from apt if the package was installed explicitly or as a dependency of another package?
107802
How to check if Ubuntu Desktop or Server is installed?
143053
How do I check what kernel options were compiled without looking at /boot/config-*
22506
Is there a way to find out whether an updated program/package lands in the official Ubuntu release repositories?
3472
How do I check the battery's status via the terminal?
4623
How do I get a list of installed files from a package?
32321
Quick way to tell if an installed application is 64-bit or 32-bit
6958
How can I check if a program exists from a Bash script?
40037
How to detect the OS from a Bash script?
125801
How do I determine if my system is Windows 10 using the command line?
99406
How to list user installed applications (not packages)?
115780
Is there a way to know which GTK version is installed using the command line?
24368
How can I list all files which have been installed by an APT package?
98065
Configuring to detect if a command does not exist, suggest installation
34456
How can a script check if it's being run as root?