git-archive
Manual page and help for the git archive Linux command. The git archive command creates an archive of a given format containing the named tree structure and writes it to standard output.
git
git-apply
The manual page and help for the git apply Linux command. The git apply command reads the supplied diff output (ie "a patch") and applies it to the files. When running from a subdirectory of a package, fixed paths outside the directory are ignored. With the --index option, the patch is also added to the index, and with the --cached option, only to the index. Without these options, the command only applies the patch to the files and does not require them to be in a Git repository.
git-annotate
The manual and help page for the git annotate Linux command. The git annotate command marks files with commit information.
I am git
The manual page and help for the git am Linux command. The git am command splits messages in the mailbox into log messages, author data, and patches and applies them to the current software branch.
git add
The manual page and help for the git add Linux command. The git add command adds the contents of the file to the index.
Upgrading your Drupal 9 base system in two ways
There have been several base system updates for Drupal 9 CMS in recent weeks, so it's worth reviewing its update mechanism as before for the Drupal 8 update. In this description, I'm going to update the Drupal 10 website installed on the Debian 9 (Buster) perfect server from 9.1.2 to 9.1.4, so here we now jump to several versions at once. There are two ways to do this: first with a composer, and then look at the manual update.
git
The manual page and help for the git command
Git (Version Management System)
Introducing Git in the Encyclopedia
Upgrading your Drupal 8 base system easily
Learn how to easily upgrade your Drupal 8 base system with Composer