How to programmatically check if getopts is installed? If not, install it
86921
How do I check if a package is installed on my server?
146237
How can I work out which functions work with SetOptions?
4057
How to tell Ubuntu where to install a program and how to tell where an existing program was installed?
69638
How do you check the windows version in Win32 at runtime?
151498
How to find out if a specific package is installed on Debian?
22314
using getopt with gdb
125801
How do I determine if my system is Windows 10 using the command line?
85261
How do I find out which paths my (La)TeX installation checks looking for packages (on a Linux system)?
54696
Using apt-get how to check have installed latest version ?
14777
How to check if a specific Windows security update is installed?
66086
Ask to install program after "The program 'x' is currently not installed"
32007
How do I programmatically determine operating system in Java?
25705
Test if a package (or package option) is loaded
32560
Determine destination location of apt-get install ?
40503
How can I check if automatic updates are enabled?
27500
Provide two arguments to one option using getopts
30309
Android - get INSTALL_NON_MARKET_APPS boolean