fwrite() expects parameter 1 to be resource, bool given in

Sometimes in Opencart you may get these kind of warnings in browser.

fwrite() expects parameter 1 to be resource, bool given in /var/www/html

Solution to fix:

Check your selinux status, if selinux is enabled, you need to disable selinux and reboot the machine.

How to restrict wp-admin access from one IP

 How to restrict wp-admin access from one IP

As you know, wordpress is a easy to hack content management system. If you want to restric the admin area of your wordress (wp-admin), you can easily do this by adding the below line in .htaccess

Go to the folder where your blog hosts

vi .htaccess

<IfModule mod_rewrite.c>

<Files wp-login.php>

order deny,allow

deny from all

allow from 121.15.102.0/255.255.255.0    (Add your IP or range here)

</Files>

RewriteEngine On

RewriteBase /

RewriteRule ^index\.php$ - [L]

RewriteCond %{REQUEST_FILENAME} !-f

RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule . /index.php [L]

</IfModule>

Save the file and test.

How to install Mysql5.7 on Oracle linux 7

 By default Mariadb comes with Oracle linux 7. I need to have mysql on my box.

yum remove mariadb-server -y

wget https://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm

rpm -ivh mysql57-community-release-el7-8.noarch.rpm

yum install mysql-server -y

systemctl start mysqld

systemctl enable mysqld

sudo grep 'temporary password' /var/log/mysqld.log

mysql_secure_installation

How to install jenkins on amazon linux

How to install jenkins on amazon linux

 Following this steps to install jenkins on amazon linux

Login to the server

sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo

sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key

yum install jenkins

sudo service jenkins start

sudo chkconfig jenkins on

Open a browser, and access http://publicip:8080

Qmail error while installing and configuraing

Qmail error while installing and configuraing

After installing Qmail, i tried to start qmail i got this error

[root@localhost qmail-smtpd]# qmailctl start
Starting qmail...

qmail-send supervise not running
qmail-smtpd supervise not running
qmail-pop3d supervise not running

I checked all the possible issues,

[root@localhost qmail-smtpd]# ls -l /service
total 0
lrwxrwxrwx 1 root root 32 2010-08-16 21:38 qmail-pop3d -> /var/qmail/supervise/qmail-pop3d
lrwxrwxrwx 1 root root 31 2010-08-16 21:38 qmail-send -> /var/qmail/supervise/qmail-send
lrwxrwxrwx 1 root root 32 2010-08-16 21:38 qmail-smtpd -> /var/qmail/supervise/qmail-smtpd

[root@localhost qmail-smtpd]# ps ax |grep supervise
10190 pts/1 T 0:00 supervise log
10332 pts/1 S+ 0:00 grep supervise

etc...........

Solution

'svscanboot' was not running

[root@localhost qmail-smtpd]# svscanboot &
[2] 10336
[root@localhost qmail-smtpd]# qmailctl start
Starting qmail...

Starting qmail-send
Starting qmail-smtpd
Starting qmail-pop3d

It works !!!! Seems like we have to reboot the server after installing daemontools.

How to untar a file in Sun Solaris10

Normally i am doing is like this " tar -xzvf file.tar.gz "
But here in Solaris10 its not working,

this will helps.

gunzip -c somefile.tar.gz |tar xvf -

How to upgrade php 5.1.6 to php5.3

My box is Centos 32bit

Following steps i have done, used yum remi repository

wget http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-5.rpm
rpm -Uvh remi-release-5*.rpm epel-release-5*.rpm

yum --enablerepo=remi update php

Check php -v
rpm -qa | grep php