doniz

Delete multiple files to avoid "/bin/rm: cannot execute [Argument list too long]" error.

sudo find . -name "*.pdf" -print0 | sudo xargs -0 rm

doniz

BREAK="===============================================================";echo -ne "\n $BREAK \n \t Disk Usage for $(pwd) $(date +'%F') \n $BREAK \n\n";df -h $(pwd); echo -e '\n\n Volume Group Usage: \n'; vgs $(df -h $(pwd) | grep dev | awk '{print $1}'| cut -d\- -f1| cut -d\/ -f4); echo -e '\n'; echo -e "Largest Folders:\n"; du -xSk $(pwd) | sort -rn | head -30|awk '{printf "%d MB\t%s\n",($1/1024),$NF}' && echo -e "\n\n"; echo -e "Largest Files:\n"; find $(pwd) -mount -type f -ls|sort -rnk7 |head -30|awk '{printf "%d MB\t%s\n",($7/1024)/1024,$NF}';echo -e "\n\n Open Deleted Files:\n"  ;lsof | grep $(pwd) | grep deleted| awk '{ if($7 > 1048576) print $7/1048576, "MB ",$9,$1 }' | sort -n -u | tail; echo -e "\n $BREAK"

doniz

source: https://www.freelancingdigest.com/articles/capistrano-variables/

application – required
repository – required
scm – defaults to :subversion
deploy_via – defaults to :checkout
revision – defaults to the latest head version
rails_env – defaults to ‘production’
rake – defaults to ‘rake’
source – Capistrano::Deploy::SCM object

doniz

#!/usr/bin/env bash

FILES=$(find "/etc/nginx" -type f)

doniz

migrate mysql database from host to host

# migrate specific database
mysqldump -u root -proot -h192.168.91.100 --databases database_name | mysql
# migrate all database from the server
mysqldump -u root -proot -h192.168.91.100 --all-databases | mysql

doniz

find . -type f -printf '%TY-%Tm-%Td\n' | sort | uniq -c

doniz

# put branch list to file "git branch -l | grep some-filter-text > branch-list.txt"
# serve branch list from file
BRANCHES=$(cat branch-list.txt)

for BRANCH in $BRANCHES; do
  git branch -d $BRANCH -f;
done

doniz

Resize a Hard Disk for a Virtual Machine

Our Virtual Machines are provisioned using Vagrant from a Linux base box to run using VirutalBox. If the Hard Disk space runs out and you cannot remove files to free-up space, you can resize the Hard Disk using some VirtualBox and Linux commands.

Some assumptions

The following steps assume you've got a set-up like mine, where:

doniz

# See http://www.rabbitmq.com/ssl.html
#
# (c) Stan Angeloff / http://www.gnu.org/licenses/agpl-3.0.html

SHELL := /bin/bash

HOSTNAME ?= $(shell hostname)
PASSPHRASE ?= $(shell cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)

PASSPHRASE_FILE = $(HOSTNAME)/.passphrase

doniz

HTTP Headers

tcpdump -A -s 10240 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' | egrep --line-buffered "^........(GET |HTTP\/|POST |HEAD )|^[A-Za-z0-9-]+: " | sed -r 's/^........(GET |HTTP\/|POST |HEAD )/\n\1/g'

Postgres Queries

sudo tcpdump -i lo -s0 -nl -w- dst port postgres | strings -n8