blindpet

server {
        server_name default_server;

        access_log   /var/log/nginx/htpcguides.com.access.log;
        error_log    /var/log/nginx/htpcguides.com.error.log;

        root /var/www/htpcguides.com/;
        index index.php;

        location / {

blindpet

mysqldump -u [user] -p[password] [database] [table] > [output_file_name].sql

mysqldump -p --user=example --where="x = 'y' AND id = 2" dbname tablename >> dump.sql
#dumping last rows
mysqldump -uroot -p db_name table_name --where='id<1000000'
or you can use

SELECT * INTO OUTFILE 'data_path.sql' from table where id<100000

blindpet

cat /etc/*release | grep -E "debian|ubuntu"

blindpet

mono --version | awk 'FNR == 1 {print $5}' | cut -c-4

blindpet

use double grep

command | grep 'what you want' | grep -v 'whatyoudontwant'

Or use awk

awk '/XXX/ && !/YYY/' file
     ^^^^^    ^^^^^^
I want it     I don't want it
You can even say something more complex. For example: I want those lines containing either XXX or YYY, but not ZZZ:

blindpet

Enter varnish admin

varnishadm

clear cache for index home page only

ban req.http.host ~ www.htpcguides.com && req.url ~ "^/$"

clear cache for specific page

blindpet

#!/bin/bash
# edited 2015.04.20 15:50 est from https://forum.transmissionbt.com/viewtopic.php?f=1&t=16887#p70825
set -e
SCRIPT="$(readlink -e ""$0"")"

##  install dependencies and required compiling tools from standard repos
sudo apt-get update
sudo apt-get -y install build-essential checkinstall pkg-config libtool intltool libcurl4-openssl-dev libssl-dev libevent-dev
sudo sed -i 's/TRANSLATE=1/TRANSLATE=0/' /etc/checkinstallrc
#-uncomment if needed:

blindpet

http://giantdorks.org/alain/a-shell-script-to-refresh-a-predefined-set-of-pages-in-varnish-cache/

cmd="sudo varnishadm -T 127.0.0.1:6082 -S /etc/varnish/secret"
site="http://www.htpcguides.com"
pages="
/
/feed
"
 
echo -----------------------------

blindpet

sudo stat /proc/1/exe

sudo stat /proc/1/exe | grep -i file | awk '{print $4}' | grep 'systemd\|upstart\|init'

cut as well http://linuxpoison.blogspot.hu/2012/08/bash-script-string-manipulation-find-cut.html

http://unix.stackexchange.com/questions/196166/how-to-find-out-if-a-system-uses-sysv-upstart-or-systemd-initsystem

blindpet

#!/usr/bin/env bash

echo Enter full URL to purge
read url

curl -s $url -H "Cache-Control: no-cache" -o /dev/null
echo Refreshed $url