pg_restore:tldr:82157

The command "pg_restore" is used to restore a PostgreSQL database from an archive file.

Here is the breakdown of the command:

• "pg_restore": It is the command itself, which is an executable utility in PostgreSQL.
• "-j ${2}": This option specifies the number of parallel jobs to use for the restore process. The value of ${2} is a variable that should be provided as the second argument when running the command.
• "-d ${db_name}": This option specifies the name of the database to which the archive file should be restored. The value of ${db_name} is a variable that should be provided as the name of the database.
• "${archive_file-dump}": This is the filename of the archive file containing the database dump. The value of ${archive_file-dump} is a variable representing the filename.

So, when you run this command, it will restore the database from the specified archive file (-d ${archive_file-dump}) to the database with the specified name (-d ${db_name}). The number of parallel jobs to be used for the restore process can be also specified (-j ${2}).