Category: Linux

Installing `mongorestore` on Ubuntu 22.04

August 18, 2025

When working with MongoDB, the mongorestore utility is an essential tool for restoring databases from BSON dump files. On Ubuntu 22.04, mongorestore is included in the MongoDB Database Tools package, which is distributed separately from the MongoDB server. This guide walks you through the installation process step by step. Step 1: Import the MongoDB Public GPG Key Before adding the MongoDB repository, you need to import its public GPG key:

curl -fsSL https://pgp.mongodb.com/server-6.0.asc | sudo gpg --dearmor -o /usr/share/keyrings/mongodb-server-6.0.gpg

1 2	curl -fsSL https://pgp.mongodb.com/server-6.0.asc \| sudo gpg --dearmor -o /usr/share/keyrings/mongodb-server-6.0.gpg

Step 2: Add the MongoDB APT Repository Add the MongoDB repository to your system’s APT sources:

echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-6.0.gpg ] https://repo.mongodb.org/apt/ubuntu jammy/mongodb-org/6.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-6.0.list

1 2	echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-6.0.gpg ] https://repo.mongodb.org/apt/ubuntu jammy/mongodb-org/6.0 multiverse" \| sudo tee /etc/apt/sources.list.d/mongodb-org-6.0.list

Step 3: Update the Package List Update the local package index to include the new MongoDB repository:

sudo apt-get update

1 2	sudo apt-get update

Step 4: Install the MongoDB Database Tools Install the tools package, which includes mongorestore along with other utilities such as mongodump, mongoimport, and mongoexport:

sudo apt-get install -y mongodb-database-tools

1 2	sudo apt-get install -y mongodb-database-tools

Step 5: Verify the Installation Confirm that mongorestore is installed and available on your system:

mongorestore --version

1 2	mongorestore --version

You should see

How to Install the PostgreSQL Client on Ubuntu 22.04 and 24.04

August 14, 2025

Whether you’re managing cloud-hosted databases or working in a containerized environment, the PostgreSQL client is an essential tool for developers, sysadmins, and database engineers alike. This article walks you through installing the PostgreSQL client on Ubuntu 22.04 (Jammy Jellyfish) and Ubuntu 24.04 (Noble Numbat)—two of the most widely used LTS releases. What Is the PostgreSQL Client? The PostgreSQL client includes tools like psql, which allow you to connect to PostgreSQL servers, run SQL queries, perform backups, and administer remote databases. It’s commonly installed on application servers, staging environments, and development machines to interact with databases hosted elsewhere. Which Version Should I Install? Both Ubuntu 22.04 and 24.04 come with a default version of PostgreSQL in their package repositories: Ubuntu Version Default PostgreSQL Client Version 22.04 (Jammy) 14 24.04 (Noble) 16 If you’re fine using the default version, installation is straightforward. If you need a newer or specific version, you can

How-to Change UUID Of A Disk

September 25, 2023

When cloning or restoring disk volumes is possible to run into problem which conflicting UUID values. Each disk volume needs to be assigned a unique UUID. The UUID is store on the volume. A cloned or restored disk will have the same UUID as volume from which it was generated. By default you are not allowed to mount two volumes with the same UUID. This can overcome with the “nouuid” mount option: mount -o nouuid /dev/xvdg1 /mnt Often a server will be configured to select the root partition on boot by UUID. This makes is easy to ensure that the right volume is selected as the root. But if you have two volumes with the same UUID then the kernel will randomly select which volume to mount. This situation can occur when you’ve mounted a cloned or restored copy of the root volume and then reboot without removing the clone.

“find” Newer Files & Sort By Date

April 13, 2021

Sort “find” results by date:

find . -type f -printf "%T@\t%Tc %6k KiB %p\n" | sort -n | cut -f 2-

1	find . -type f -printf "%T@\t%Tc %6k KiB %p\n" \| sort -n \| cut -f 2-

Find files newer then a specific file:

find . -type f -newer somefile.txt

1 2	find . -type f -newer somefile.txt

And combined:

find . -type f -newer somefile.txt -printf "%T@\t%Tc %6k KiB %p\n" | sort -n | cut -f 2-

1 2	find . -type f -newer somefile.txt -printf "%T@\t%Tc %6k KiB %p\n" \| sort -n \| cut -f 2-

Mounting cloned disk

March 19, 2019

If you try to mount a cloned disk then you may get an error about duplicate UUID values. You can override with the “nouuid” option:

mount -o nouuid /dev/xvdg1 /mnt

1	mount -o nouuid /dev/xvdg1 /mnt

If the disk is using LVM then additional steps will be required:

vgimportclone -n orignalvgname_clone   /dev/sdx [/dev/sdy....]
vgchange -ay orignalvgname_clone

1 2	vgimportclone -n orignalvgname_clone /dev/sdx [/dev/sdy....] vgchange -ay orignalvgname_clone

Now you can list the partitions with lsblk and mount the desired logical volume with the “nouuid” option.

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