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@pksunkara
pksunkara / config
Last active March 15, 2025 12:19
Sample of git config file (Example .gitconfig) (Place them in $XDG_CONFIG_HOME/git)
[user]
name = Pavan Kumar Sunkara
email = [email protected]
username = pksunkara
[init]
defaultBranch = master
[core]
editor = nvim
whitespace = fix,-indent-with-non-tab,trailing-space,cr-at-eol
pager = delta
#!/bin/bash
kill -USR2 `cat tmp/pids/unicorn.pid`
@denji
denji / nginx-tuning.md
Last active March 12, 2025 03:47
NGINX tuning for best performance

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

@Zodiac1978
Zodiac1978 / .htaccess
Last active June 23, 2024 17:39
Safer WordPress with these .htaccess additions
# Don't show errors which contain full path diclosure (FPD)
# Use that line only if PHP is installed as a module and not per CGI
# try using a php.ini in that case.
# Change mod_php5.c to mod_php7.c if you are running PHP7
<IfModule mod_php5.c>
php_flag display_errors Off
</IfModule>
# Don't list directories
<IfModule mod_autoindex.c>
# Hello, and welcome to makefile basics.
#
# You will learn why `make` is so great, and why, despite its "weird" syntax,
# it is actually a highly expressive, efficient, and powerful way to build
# programs.
#
# Once you're done here, go to
# http://www.gnu.org/software/make/manual/make.html
# to learn SOOOO much more.
@kaiix
kaiix / mongodb.logrotate
Last active December 30, 2020 03:55
logrotate mongodb log
/var/log/mongodb/mongod.log {
hourly
missingok
rotate 5
compress
delaycompress
notifempty
create 0640 mongodb mongodb
sharedscripts
postrotate
@bkozora
bkozora / lambdaAMICleanup.py
Last active October 29, 2024 02:53
AWS Lambda Function to Delete AMIs and Snapshots
# Automated AMI and Snapshot Deletion
#
# @author Bobby Kozora
#
# This script will search for all instances having a tag named "Backup" with a value of "Backup".
# As soon as we have the instances list, we loop through each instance
# and reference the AMIs of that instance. We check that the latest daily backup
# succeeded then we store every image that's reached its DeleteOn tag's date for
# deletion. We then loop through the AMIs, deregister them and remove all the
# snapshots associated with that AMI.
@jonathanwcrane
jonathanwcrane / Purge_CloudWatchAlarms.py
Last active March 27, 2024 09:42
Purge CloudWatch alarms for instances that no longer exist
#Step 1: Get a list of all alarms in INSUFFICIENT_DATA status
#Step 2: Get a list of all instances (stopped and started)
#Step 3: Find all alarms on instances that don't exist, and delete them
###################################################
#Step 1: Get alarms in INSUFFICENT_DATA state
###################################################
#The max that we can get per loop is 100; all alarms for nonexistent instances will be in
#INSUFFICIENT_DATA state so let's just go through those.
insuff_alarms = []
loops = 1
@eladnava
eladnava / mongodb-s3-backup.sh
Last active September 13, 2024 11:42
Automatically backup a MongoDB database to S3 using mongodump, tar, and awscli (Ubuntu 14.04 LTS)
#!/bin/sh
# Make sure to:
# 1) Name this file `backup.sh` and place it in /home/ubuntu
# 2) Run sudo apt-get install awscli to install the AWSCLI
# 3) Run aws configure (enter s3-authorized IAM user and specify region)
# 4) Fill in DB host + name
# 5) Create S3 bucket for the backups and fill it in below (set a lifecycle rule to expire files older than X days in the bucket)
# 6) Run chmod +x backup.sh
# 7) Test it out via ./backup.sh
@gunjanpatel
gunjanpatel / revert-a-commit.md
Last active March 12, 2025 04:26
Git HowTo: revert a commit already pushed to a remote repository

Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32: