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pg_dump:tldr:fd1a3
This command is used to perform a database backup using the pg_dump
utility in PostgreSQL. Here is a breakdown of the command:
-
pg_dump
: This is the command-line utility used to create a backup of a PostgreSQL database. -
-U ${username}
: This option specifies the username to connect to the database.${username}
is a placeholder that should be replaced with the actual username. -
${db_name}
: This is the name of the database to be backed up.${db_name}
is a placeholder that should be replaced with the actual database name. -
> ${output_file.sql}
: The>
symbol is used for output redirection, indicating that the output of thepg_dump
command should be redirected to a file instead of being displayed in the console.${output_file.sql}
is a placeholder that should be replaced with the desired name and location of the backup file. The file extension.sql
is commonly used to indicate that it is a SQL script.
In summary, this command connects to a PostgreSQL database with a specific username, performs a backup of the specified database, and saves the backup to a designated output file in SQL format.