tlmgr:tldr:0d3f6
tlmgr: Show possible updates without updating anything.
$ tlmgr update --list
try on your machine
The command "tlmgr update --list" is used in the TeX Live distribution to display a list of available updates for installed TeX Live packages.
"tlmgr" is the command-line tool for managing packages in TeX Live. It is used to perform various operations such as installing, updating, and removing packages.
"update" is a command within "tlmgr" used to update the distribution. When used with the "--list" option, it provides a list of available updates for installed packages.
By running "tlmgr update --list", you can check which packages have newer versions available. This information allows you to decide whether to update specific packages or the entire TeX Live distribution.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.