LeCoupa

# Redis Cheatsheet
# All the commands you need to know


redis-server /path/redis.conf  # start redis with the related configuration file
redis-cli                      # opens a redis prompt


# Strings.

idleberg

This list has been updated for Big Sur (and later). Since I don't use these versions, this guide might still need further improvements. For older macOS versions, please see this older revision.

Open in Sublime Text

• Open Automator
• Quick Action
• Set “Service receives selected” to files or folders in any application
• Add a Run Shell Script action
• Set the script action to /Applications/Sublime\ Text.app/Contents/SharedSupport/bin/subl -n "$@"
• Set “Pass input” to as arguments

ursuad

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

pdanford

Launching iTerm2 from macOS Finder

(Based on info from Peter Downs' gitub but with modified behavior to open a new terminal window for each invocation instead of reusing an already open window.)

The following three ways to launch an iTerm2 window from Finder have been tested on iTerm2 version 3+ running on macOS Mojave+.

pdanford - April 2020

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magnetikonline

Nginx & PHP-FPM systemd services

A basic set of systemd units for starting Nginx and PHP-FPM daemons on system startup.

• Ensures Nginx web server has started before the PHP-FPM process.
• Nginx pid file placed at /run/nginx.pid.
• PHP-FPM pid file placed at /run/php7/php-fpm.pid, PHP7 PHP-FPM config at /etc/php7.
• Based on usage with Ubuntu 16.04LTS / 18.04LTS.

Unit files are placed in /etc/systemd/system and enabled with:

petericebear

<?php

$finder = Symfony\Component\Finder\Finder::create()
    ->notPath('bootstrap/cache')
    ->notPath('storage')
    ->notPath('vendor')
    ->in(__DIR__)
    ->name('*.php')
    ->notName('*.blade.php')
    ->ignoreDotFiles(true)

spalladino

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

theothermattm

# sync everything excluding things in .gitignore
# delete anything on target not in source
# include dotfiles and symlinks, also use compression
rsync -azP --delete --filter=":- .gitignore" . my-target-host:/my/target/directory

shady-robot

Tmux is a "terminal multiplexer", it enables a number of terminals to be accessed and controlled from a single terminal.
    
If you use Debian/Ubuntu, you can just run apt-get install tmux, and voila. 
  
Since the title was about centos 7, then do the following step to install tmux.
  (1). tmux has a library dependency on libevent which, of course, isn’t installed by default. 
    $ wget https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
    $ tar xzvf libevent-2.0.21-stable.tar.gz
    $ cd libevent-2.0.21-stable
    $ ./configure && make

rponte

# The command finds the most recent tag that is reachable from a commit.
# If the tag points to the commit, then only the tag is shown.
# Otherwise, it suffixes the tag name with the number of additional commits on top of the tagged object 
# and the abbreviated object name of the most recent commit.
git describe

# With --abbrev set to 0, the command can be used to find the closest tagname without any suffix:
git describe --abbrev=0

# other examples