git rm --cached mylogfile.log
git rm --cached -r mydirectory

~google_appengine/dev_appserver.py --skip_sdk_update_check --port 8085 --admin_port 9005 --php_executable_path /usr/local/bin/php-cgi ~application_path

sudo launchctl unload /System/Library/LaunchDaemons/com.apple.syslogd.plist
sudo launchctl load /System/Library/LaunchDaemons/com.apple.syslogd.plist

<img id="uploadPreview" style="width: 100px; height: 100px;" />
<input id="uploadImage" type="file" name="myPhoto" onchange="PreviewImage();" />
<script>
function PreviewImage() {
    var oFReader = new FileReader();
    oFReader.readAsDataURL(document.getElementById("uploadImage").files[0]);
    oFReader.onload = function (oFREvent) {
        document.getElementById("uploadPreview").src = oFREvent.target.result;
    };
};
</script>

yum list | grep -i xml
 rpmdb: Thread/process 31902/140347322918656 failed: Thread died in Berkeley DB library
 error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery
 error: cannot open Packages index using db3 -  (-30974)
 error: cannot open Packages database in /var/lib/rpm
 CRITICAL:yum.main:
 Error: rpmdb open failed

rm -f /var/lib/rpm/__*
rpm --rebuilddb

$db = new PDO("mysql:host=localhost;dbname=test", 'root', '');

// works regardless of statements emulation
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, 0);

$sql = "
DELETE FROM car; 
INSERT INTO car(name, type) VALUES ('car1', 'coupe'); 
INSERT INTO car(name, type) VALUES ('car2', 'coupe');
";

try {
    $db->exec($sql);
}
catch (PDOException $e)
{
    echo $e->getMessage();
    die();
}

$db = new PDO("mysql:host=localhost;dbname=test", 'root', '');

// works not with the following set to 0. You can comment this line as 1 is default
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, 1);

$sql = "
DELETE FROM car; 
INSERT INTO car(name, type) VALUES ('car1', 'coupe'); 
INSERT INTO car(name, type) VALUES ('car2', 'coupe');
";

try {
    $stmt = $db->prepare($sql);
    $stmt->execute();
}
catch (PDOException $e)
{
    echo $e->getMessage();
    die();
}

curl -X HEAD -e http://site.com -i  http://ya.ru

service sysctl reload

sysctl -p /etc/sysctl.conf

 ddrescue --force /dev/ada1 /dev/null

mount -o remount,rw /              # Linux
mount -o rw /                      # FreeBSD

yum -y groupinstall "Development Tools"
git clone https://github.com/tony2001/ffmpeg-php.git
cd ffmpeg-php
phpize
./configure
make && make install

cd /root

yum install git gcc-c++ pcre-devel zlib-devel make wget openssl-devel libxml2-devel libxslt-devel gd-devel perl-ExtUtils-Embed GeoIP-devel gperftools-devel

wget http://nginx.org/download/nginx-1.6.2.tar.gz
tar -xvf nginx-1.6.2.tar.gz

git clone https://github.com/vkholodkov/nginx-upload-module.git
cd nginx-upload-module
git checkout 2.2
cd ..

cd nginx-1.6.2
./configure --prefix=/usr/share/nginx --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/lib/nginx/tmp/client_body --http-proxy-temp-path=/var/lib/nginx/tmp/proxy --http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi --http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi --http-scgi-temp-path=/var/lib/nginx/tmp/scgi --pid-path=/var/run/nginx.pid --lock-path=/var/lock/subsys/nginx --user=nginx --group=nginx --with-file-aio --with-pcre --with-ipv6 --with-http_ssl_module --with-http_spdy_module --with-http_realip_module --with-http_addition_module --with-http_xslt_module --with-http_image_filter_module --with-http_geoip_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module --with-http_degradation_module --with-http_stub_status_module --with-http_perl_module --with-mail --with-mail_ssl_module --with-pcre --with-debug --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --with-ld-opt=-Wl,-E --add-module=/root/nginx-upload-module

make install

#!/bin/sh
#
# nginx        Startup script for nginx
#
# chkconfig: - 85 15
# processname: nginx
# config: /etc/nginx/nginx.conf
# config: /etc/sysconfig/nginx
# pidfile: /var/run/nginx.pid
# description: nginx is an HTTP and reverse proxy server
#
### BEGIN INIT INFO
# Provides: nginx
# Required-Start: $local_fs $remote_fs $network
# Required-Stop: $local_fs $remote_fs $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: start and stop nginx
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

if [ -L $0 ]; then
    initscript=`/bin/readlink -f $0`
else
    initscript=$0
fi

sysconfig=`/bin/basename $initscript`

if [ -f /etc/sysconfig/$sysconfig ]; then
    . /etc/sysconfig/$sysconfig
fi

nginx=${NGINX-/usr/sbin/nginx}
prog=`/bin/basename $nginx`
conffile=${CONFFILE-/etc/nginx/nginx.conf}
lockfile=${LOCKFILE-/var/lock/subsys/nginx}
pidfile=${PIDFILE-/var/run/nginx.pid}
SLEEPMSEC=${SLEEPMSEC-200000}
UPGRADEWAITLOOPS=${UPGRADEWAITLOOPS-5}
RETVAL=0

start() {
    echo -n $"Starting $prog: "

    daemon --pidfile=${pidfile} ${nginx} -c ${conffile}
    RETVAL=$?
    echo
    [ $RETVAL = 0 ] && touch ${lockfile}
    return $RETVAL
}

stop() {
    echo -n $"Stopping $prog: "
    killproc -p ${pidfile} ${prog}
    RETVAL=$?
    echo
    [ $RETVAL = 0 ] && rm -f ${lockfile} ${pidfile}
}

reload() {
    echo -n $"Reloading $prog: "
    killproc -p ${pidfile} ${prog} -HUP
    RETVAL=$?
    echo
}

upgrade() {
    oldbinpidfile=${pidfile}.oldbin

    configtest -q || return
    echo -n $"Starting new master $prog: "
    killproc -p ${pidfile} ${prog} -USR2
    echo

    for i in `/usr/bin/seq $UPGRADEWAITLOOPS`; do
        /bin/usleep $SLEEPMSEC
        if [ -f ${oldbinpidfile} -a -f ${pidfile} ]; then
            echo -n $"Graceful shutdown of old $prog: "
            killproc -p ${oldbinpidfile} ${prog} -QUIT
            RETVAL=$?
            echo
            return
        fi
    done

    echo $"Upgrade failed!"
    RETVAL=1
}

configtest() {
    if [ "$#" -ne 0 ] ; then
        case "$1" in
            -q)
                FLAG=$1
                ;;
            *)
                ;;
        esac
        shift
    fi
    ${nginx} -t -c ${conffile} $FLAG
    RETVAL=$?
    return $RETVAL
}

rh_status() {
    status -p ${pidfile} ${nginx}
}

# See how we were called.
case "$1" in
    start)
        rh_status >/dev/null 2>&1 && exit 0
        start
        ;;
    stop)
        stop
        ;;
    status)
        rh_status
        RETVAL=$?
        ;;
    restart)
        configtest -q || exit $RETVAL
        stop
        start
        ;;
    upgrade)
        rh_status >/dev/null 2>&1 || exit 0
        upgrade
        ;;
    condrestart|try-restart)
        if rh_status >/dev/null 2>&1; then
            stop
            start
        fi
        ;;
    force-reload|reload)
        reload
        ;;
    configtest)
        configtest
        ;;
    *)
        echo $"Usage: $prog {start|stop|restart|condrestart|try-restart|force-reload|upgrade|reload|status|help|configtest}"
        RETVAL=2
esac

exit $RETVAL
 

mysqldump -u root -pPASSWORD -h localhost --lock-all-tables --disable-keys DBNAME | gzip -c | ssh root@xx.xx.xx.xx "cat > /home/database.core.sql.gz"

service postfix stop
postsuper -d ALL
service postfix start

mongorestore --dbpath /var/lib/mongo /home/backup/mongo

mongoexport --db databaseName --collection collectionName --out collectionName.json

mongoimport --collection collectionName --file collectionName.json

#AuthOrder			mod_auth_pam.c* mod_auth_unix.c

proftpd -nd 10 

php composer.phar require swiftmailer/swiftmailer @stable

<?php
require __DIR__ . '/vendor/autoload.php';

// создаем транспорт
$transport = Swift_SmtpTransport::newInstance('smtp.mailgun.org', 587)
    ->setUsername('postmaster@snippets.pp.ru')
    ->setPassword('******');

$mailer = Swift_Mailer::newInstance($transport);

// создаем сообщение
$message = Swift_Message::newInstance('Тема')
    ->setFrom('mail@snippets.pp.ru')
    ->setTo('admin@snippets.pp.ru')
    ->setBody('<span style="color:red">Это текст сообщения</span>', 'text/html')
    ->attach(Swift_Attachment::fromPath('/home/file.pdf'));

// шлем сообщение
$result = $mailer->send($message);
var_dump($result);
?>

curl -X HEAD -i http://www.google.com

sudo mv ~/Library/LaunchAgents/homebrew.mxcl.nginx.plist  /System/Library/LaunchDaemons/homebrew.mxcl.nginx.plist

<?php
$cfIpRanges = [
    '199.27.128.0/21',
    '173.245.48.0/20',
    '103.21.244.0/22',
    '103.22.200.0/22',
    '103.31.4.0/22',
    '141.101.64.0/18',
    '108.162.192.0/18',
    '190.93.240.0/20',
    '188.114.96.0/20',
    '197.234.240.0/22',
    '198.41.128.0/17',
    '162.158.0.0/15',
    '104.16.0.0/12',
];

$cidr_match = function ($ip, $range) {
    list ($subnet, $bits) = explode('/', $range);
    $ip = ip2long($ip);
    $subnet = ip2long($subnet);
    $mask = -1 << (32 - $bits);
    $subnet &= $mask;
    return ($ip & $mask) == $subnet;
};

if (isset($_SERVER['HTTP_CF_CONNECTING_IP'])) {
    foreach ($cfIpRanges as $cfIpRange) {
        if ($cidr_match($_SERVER['REMOTE_ADDR'], $cfIpRange)) {
            $_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_CF_CONNECTING_IP'];
            break;
        }
    }
}
?>