quickly check package exists using tlmgr on win command line
68366
Checking installed packages
86921
How do I check if a package is installed on my server?
138270
Is there a way to determine what packages or libraries should be loaded to support an executable?
88788
Check my find/exec command before running
35508
How to find program name(s) of an installed package?
2108
How can we get the command line of a running application?
66101
How to check which package created a user?
7101
How to find out which (not installed) Debian package a file belongs to?
114175
How do I test if another installation is already in progress?
142838
How does the windows run dialog locate executables?
73749
How to find manually installed packages?
151411
How can I know if a virtual package is "installed" on a Debian system?
71959
Is there any simple way to access installed programs?
46618
How can I know what programs some apt-get package contains?
6958
How can I check if a program exists from a Bash script?
81981
How to test if package is installed?
15828
How to find which package provides a file?