PostgreSQL comes with two command-line utilities for dumping and then restoring a database — pg_dump(Backup Database) and pg_restore(Restore Database), respectively

— first switch to postgres user
# su – postgres

Postgresql command for backup database

pg_dump -v -d databasename > database-dump-filename.dump

More

pg_dump -U db_user -W -F t db_name > /tmp/dump_name.tar

Here we used the following options:
-U to specify which user will connect to the PostgreSQL database server.
-W or –password will force pg_dump to prompt for a password before connecting to the server.
-F is used to specify the format of the output file, which can be one of the following:
p – plain-text SQL script
c – custom-format archive
d – directory-format archive
t – tar-format archive

Postgresql Create New UTF-8 Database,

below command direct can fire from postgres user

createdb -E UTF8 -T template0 –locale=en_US.utf8 <dbname>

To create database from psql terminal

CREATE DATABASE “snippetbucket_db”
WITH OWNER “postgres”
ENCODING ‘UTF8’
LC_COLLATE = ‘en_US.UTF-8’
LC_CTYPE = ‘en_US.UTF-8’
TEMPLATE template0;

Are you looking for database restoration ! Let’s go

Postgresql command to restore database

pg_restore -d databasename database-dump-filename.dump

With pg_restore you have various options available, for example:

-C to create a database before restoring into it,
-c to drop database objects before recreating them,
-e exit if an error has encountered,
-F format to specify the format of the archive.

More…
Restore a database with psql

psql -U db_user db_name < /tmp/dump_name.sql

Odoo: Restore manual dump backup.

pg_restore -v -O -x -n public -d oe12_sb_2019_second sb-2019-5-20.dump

database: oe12_sb_2019_second
dump file: sb-2019-5-20.dump

-v -O -x -n public these are key important parameters to restore database.

Compress Folder

Use the following command to compress an entire directory or a single file on Linux. It will also compress every other directory inside a directory you specify – in other words, it works recursively.

tar -czvf name-of-archive.tar.gz /path/to/directory-or-file

Here’s what those switches actually mean:

  • -c: Create an archive.
  • -z: Compress the archive with gzip.
  • -v: Display progress in the terminal while creating the archive, also known as “verbose” mode. The v is always optional in these commands, but it’s helpful.
  • -f: Allows you to specify the filename of the archive.

If you have a directory named ‘data’ in the current directory and you want to save it to a file named archive.tar.gz , you would run the following command:

tar -czvf archive.tar.gz data

If you have a directory at /usr/local/something on the current system and you want to compress it to a file named archive.tar.gz , you would run the following command:

tar -czvf archive.tar.gz /usr/local/something

 

Extract an Archive

Once you have an archive, you can extract it with the tar command. The following command will extract the contents of archive.tar.gz to the current directory.

tar -xzvf archive.tar.gz

It’s the same as the archive creation command we used above, except the -x switch replaces the -c switch. This specifies you want to extract an archive instead of create one.

You may want to extract the contents of the archive to a specific directory. You can do so by appending the -C switch to the end of the command. For example, the following command will extract the contents of the archive.tar.gz file to the /tmp directory.

tar -xzvf archive.tar.gz -C /tmp