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Ethan Ward
Ethan Ward

Redis CLI: A Powerful Tool for Redis Users - Download Now



How to Download and Use Redis CLI




Redis is a popular open-source, in-memory data structure store that can be used as a database, cache, message broker, and more. It supports various data structures such as strings, lists, sets, hashes, bitmaps, hyperloglogs, streams, and geospatial indexes. Redis also provides features such as replication, persistence, clustering, transactions, scripting, pub/sub, and modules.




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Redis CLI is a command-line utility that lets you interact with a Redis database. You can use it to run Redis commands, monitor the server, check the latency, scan the keyspace, and more. In this article, we will show you how to download and use Redis CLI on different operating systems.


What is Redis CLI?




A command-line utility for interacting with Redis databases




Redis CLI is a program that allows you to send commands to Redis and read the replies sent by the server from the terminal. It can also connect to multiple servers, pipe commands from files or standard input, subscribe to channels, and perform other tasks related to Redis.


Redis CLI is written in C and is part of the Redis project. It is distributed along with the Redis server binary when you install Redis on your system. You can also install it separately using other methods such as npm or npx.


Benefits of using Redis CLI




Performance, flexibility, simplicity, and more




Using Redis CLI has many advantages over other ways of interacting with Redis databases. Here are some of them:


  • Performance: Redis has sub-millisecond queries and can handle millions of requests per second. With Redis CLI, you can leverage this speed and efficiency without any overhead or latency.



  • Flexibility: Redis is a multi-model database and provides several built-in data structures. With Redis CLI, you can access and manipulate these data structures using simple and intuitive commands.



  • Simplicity: Redis makes complex applications easier to write and maintain. With Redis CLI, you can test your logic and functionality without writing any code or using any GUI tools.



  • Replication and persistence: Redis supports master-slave replication and different modes of persistence. With Redis CLI, you can monitor the replication status, configure the persistence options, and perform backup and restore operations.



  • High availability and scalability: Redis supports clustering and Sentinel for high availability and scalability. With Redis CLI, you can connect to any node in the cluster or Sentinel group, check the cluster health, add or remove nodes, and perform failover operations



  • Security and authentication: Redis supports encryption, SSL/TLS, and password authentication. With Redis CLI, you can enable and disable these features, change the password, and connect securely to the server.



  • Monitoring and debugging: Redis provides various commands and tools for monitoring and debugging the server. With Redis CLI, you can use these commands and tools to check the server status, latency, memory usage, slow queries, logs, and more.



As you can see, Redis CLI is a powerful and versatile tool that can help you get the most out of Redis. In the next sections, we will show you how to install and use it on different platforms.


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How to Install Redis CLI




On Linux




There are several ways to install Redis CLI on Linux. Here are some of the most common ones:


Using apt or yum




If you are using a Debian-based or Red Hat-based distribution, you can use the apt or yum package manager to install Redis CLI along with the Redis server. For example, on Ubuntu or Debian, you can run the following command:


sudo apt install redis-server


This will install both the Redis server and the Redis CLI on your system. You can verify that they are installed by running:


redis-server --version


redis-cli --version


You should see the version number of both programs in the output.


Using snap or flatpak




If you prefer to use snap or flatpak as a universal package manager, you can also install Redis CLI using these tools. For example, to install Redis CLI using snap, you can run:


sudo snap install redis-cli


This will install only the Redis CLI on your system. You can verify that it is installed by running:


redis-cli --version


You should see the version number of the program in the output.


Compiling from source




If none of the above methods work for you, or if you want to install a specific version of Redis CLI, you can also compile it from source. To do this, you need to download the source code of Redis from its official website or GitHub repository. For example, to download the latest stable version of Redis (6.2.6 at the time of writing), you can run:


wget http://download.redis.io/releases/redis-6.2.6.tar.gz


This will download a compressed file containing the source code of Redis. You need to extract this file and enter the directory where it is extracted. For example:


tar xzf redis-6.2.6.tar.gz


cd redis-6.2.6


Then, you need to compile the source code using the make command. This will create several binaries in the src directory, including redis-cli. For example:


make


This may take some time depending on your system configuration. Once it is done, you can verify that redis-cli is created by running:


src/redis-cli --version


You should see the version number of the program in the output.


On macOS




There are also several ways to install Redis CLI on macOS. Here are some of the most common ones:


Using Homebrew or MacPorts




If you are using Homebrew or MacPorts as a package manager on your Mac, you can use them to install Redis CLI along with the Redis server. For example, with Homebrew, you can run:


brew install redis


This will install both the Redis server and the Redis CLI on your system. You can verify that they are installed by running:


redis-server --version


redis-cli --version


You should see the version number of both programs in the output.


Using npm or npx




If you have Node.js and npm installed on your Mac, you can also use them to install Redis CLI as a Node.js package. For example, with npm, you can run:


npm install -g redis-cli


This will install only the Redis CLI on your system as a global package. You can verify that it is installed by running:


redis-cli --version


You should see the version number of the program in the output.


On WindowsThere are also several ways to install Redis CLI on Windows. Here are some of the most common ones:


Using WSL or Docker




If you have Windows Subsystem for Linux (WSL) or Docker installed on your Windows machine, you can use them to run Redis CLI inside a Linux environment. For example, with WSL, you can install Redis CLI using apt as described in the previous section. For example:


sudo apt update


sudo apt install redis-server


This will install both the Redis server and the Redis CLI on your WSL distribution. You can verify that they are installed by running:


redis-server --version


redis-cli --version


You should see the version number of both programs in the output.


Using Chocolatey or Scoop




If you prefer to use Chocolatey or Scoop as a package manager on your Windows machine, you can use them to install Redis CLI along with the Redis server. For example, with Chocolatey, you can run:


choco install redis-64


This will install both the Redis server and the Redis CLI on your system. You can verify that they are installed by running:


redis-server --version


redis-cli --version


You should see the version number of both programs in the output.


How to Connect to a Redis Database with Redis CLI




From a node in a Redis cluster




Using SSH and redis-cli




If you have a Redis cluster running on multiple nodes, you can connect to any of them using SSH and redis-cli. For example, if you have a node with the IP address 192.168.1.10 and the port 6379, you can run:


ssh user@192.168.1.10


redis-cli -p 6379


This will establish an SSH connection to the node and then launch redis-cli with the specified port. You should see a prompt like this:


192.168.1.10:6379>


This means that you are connected to the Redis database on that node and you can start running commands.


Remotely from another machine




Using redis-cli with host, port, and password options




If you want to connect to a Redis database from another machine, you can use redis-cli with the host, port, and password options. For example, if you have a Redis server running on 192.168.1.10 with the port 6379 and the password "secret", you can run:


redis-cli -h 192.168.1.10 -p 6379 -a secret


This will connect to the Redis database on that host and port and authenticate with the password. You should see a prompt like this:


192.168.1.10:6379>


This means that you are connected to the Redis database on that host and port and you can start running commands.


Using REDISCLI_AUTH environment variable




If you don't want to type the password every time you connect to a Redis database, you can also use the REDISCLI_AUTH environment variable to store it. For example, on Linux or macOS, you can run:


export REDISCLI_AUTH=secret


This will set the REDISCLI_AUTH environment variable to "secret". Then, you can connect to the Redis database without specifying the password option:


redis-cli -h 192.168.1.10 -p 6379


This will connect to the Redis database on that host and port and authenticate with the password stored in the REDISCLI_AUTH environment variable.


From a Docker container</h3 Using docker exec and redis-cli




If you have a Redis server running inside a Docker container, you can use the docker exec command to run redis-cli inside the same container. For example, if you have a Redis container named redis-server, you can run:


docker exec -it redis-server redis-cli


This will attach to the Redis container and launch redis-cli inside it. You should see a prompt like this:


127.0.0.1:6379>


This means that you are connected to the Redis database inside the container and you can start running commands.


How to Use Redis CLI Commands




Basic usage from the command-line terminal




Examples of running Redis commands with redis-cli




Once you are connected to a Redis database with redis-cli, you can run any Redis command by typing it in the terminal and pressing Enter. For example, you can run the following commands:


SET name "John"


GET name


INCR counter


EXPIRE counter 10


TTL counter


The output of each command will be displayed in the terminal. For example:


OK


"John"


(integer) 1


(integer) 1


(integer) 10


You can also run multiple commands in one line by separating them with semicolons. For example:


SET name "John"; GET name; INCR counter; EXPIRE counter 10; TTL counter


The output of each command will be displayed in separate lines. For example:


OK


"John"


(integer) 1


(integer) 1


(integer) 10


Interactive mode with more featuresIf you type SET and press Tab, redis-cli will display a list of possible arguments for the SET command. For example:


redis 192.168.1.10:6379> SET[TAB]


EX EXAT GET KEEPTTL NX PX PXAT XX


You can use Tab to cycle through the suggestions and select the one you want. For example, if you want to use the EX option, you can type SET EX and press Tab. redis-cli will complete it to SET EX and display a list of possible values. For example:


redis 192.168.1.10:6379> SET EX[TAB]


0 1 2 3 4 5 6 7 8 9


You can use Tab to cycle through the values and select the one you want. For example, if you want to set the expiration time to 10 seconds, you can type SET EX 10 and press Tab. redis-cli will complete it to SET EX 10 and display a list of possible keys. For example:


redis 192.168.1.10:6379> SET EX 10[TAB]


name counter message list set


You can use Tab to cycle through the keys and select the one you want. For example, if you want to set the key name, you can type SET EX 10 name and press Tab. redis-cli will complete it to SET EX 10 name and display a list of possible values. For example:


redis 192.168.1.10:6379> SET EX 10 name[TAB]


"John" "Mary" "Bob" "Alice" "Tom"


You can use Tab to cycle through the values and select the one you want. For example, if you want to set the value to "John", you can type SET EX 10 name "John" and press Enter. redis-cli will run the command and display the output. For example:


redis 192.168.1.10:6379> SET EX 10 name "John"


OK


Conclusion




Summary of the main points of the article




In this article, we have learned how to download and use Redis CLI on different operating systems. We have seen what Redis CLI is, what benefits it offers, how to install it, how to connect to a Redis database, and how to use Redis commands with it.


We have also learned how to use some of the features of interactive mode, such as HELP, ?, and Tab for assistance and completion.


Call to action and links to more resources




If you want to learn more about Redis CLI and Redis in general, you can check out the following resources:


  • Redis documentation: The official documentation of Redis, where you can find detailed information about Redis CLI and other topics.



  • Redis commands: The official reference of all Redis commands, where you can find the syntax, summary, complexity, arguments, and return value of each command.



  • Redis University: The official online learning platform of Redis, where you can enroll in free courses and get certified on Redis.



  • Redis Labs: The official website of Redis Labs, the company behind Redis, where you can find products, services, blogs, events, and more related to Redis.



We hope that this article has helped you understand how to download and use Redis CLI effectively. If you have any questions or feedback, please feel free to leave a comment below.


Frequently Asked Questions




What is the difference between redis-cli and redis-client?




redis-cli is the official command-line utility for interacting with Redis databases. redis-client is a generic term that refers to any program or library that can communicate with Redis databases using its protocol.


How do I run a script or a file with redis-cli?You can run a script or a file with redis-cli using the -x or --pipe option. For example, if you have a file named commands.txt that contains Redis commands, you can run it with redis-cli like this:


cat commands.txt redis-cli -x


This will pipe the contents of the file to redis-cli and execute the commands. You should see the output of each command in the terminal.


How do I change the database number with redis-cli?




You can change the database number with redis-cli using the SELECT command. For example, if you want to switch to database number 1, you can run:


SELECT 1


This will change the current database to 1 and display a message like this:


OK


You can also specify the database number when you connect to a Redis database with redis-cli using the -n or --db option. For example, if you want to connect to database number 1, you can run:


redis-cli -n 1


This will connect to database number 1 and display a prompt like this:


127.0.0.1:6379[1]>


How do I clear the screen with redis-cli?You can clear the screen with redis-cli using the Ctrl+L keyboard shortcut. This will erase the previous output and display a blank screen with the prompt. For example:


redis 192.168.1.10:6379> GET name


"John"


redis 192.168.1.10:6379> Ctrl+L


redis 192.168.1.10:6379>


This can be useful if you want to remove the clutter and focus on the current command.


How do I exit redis-cli?




You can exit redis-cli using the QUIT or EXIT command. This will close the connection to the Redis database and terminate the program. For example:


redis 192.168.1.10:6379> QUIT


You should see a message like this:


OK


You can also use Ctrl+C or Ctrl+D keyboard shortcuts to exit redis-cli.





This is the end of the article. I hope you enjoyed reading it and learned something new about Redis CLI.


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