Linux FTP ProFtpd server configuration: setup timeouts

March 8, 2013December 6, 2016 ~ tadmin

First step before making any changes to configuration files is to create backup: # cp -fvp /etc/proftpd.conf /etc/proftpd.conf-2013-03-08.bak Second step is to check service configuration to make sure it is correct. # proftpd -td10 Checking syntax of configuration file … Syntax check complete. Edit configuration file /etc/proftpd.conf: add timout directives inside <Global> </Global> section. TimeoutNoTransfer … Continue reading Linux FTP ProFtpd server configuration: setup timeouts

Linux: enable or disable PHP APC opcode cache for virtual host

February 25, 2013December 18, 2014 ~ tadmin ~ 3 Comments

1. To install PHP APC module run commands: # yum install php-devel php-pear pcre-devel # pecl install apc 2. Example configuration file for APC # more /etc/php.d/apc.ini extension=apc.so apc.enabled=”1″ ; [ disable APC opcode cache by default apc.cache_by_default=0 ; ] apc.shm_segments=”1″ apc.num_files_hint=”1024″ apc.ttl=”7200″ apc.user_ttl=”7200″ apc.gc_ttl=”3600″ apc.cache_by_default=”1″ ;apc.filters=”” apc.slam_defense=”0″ apc.file_update_protection=”2″ apc.enable_cli=”0″ apc.max_file_size=”1M” apc.stat=”1″ apc.write_lock=”1″ apc.report_autofilter=”0″ apc.include_once_override=”0″ … Continue reading Linux: enable or disable PHP APC opcode cache for virtual host

MySQL change password for user

February 20, 2013July 15, 2013 ~ tadmin

To change password in MySQL log in to mysql as root user: $ mysql -h localhost -u root -p mysql> UPDATE mysql.user SET Password=PASSWORD(‘new_db_password’) WHERE User=’db_user_name’ AND Host=’db_host’; mysql> FLUSH PRIVILEGES; mysql> quit;

Linux log out ssh user automatically

February 14, 2013April 2, 2013 ~ tadmin

To log out ssh user automatically add the TMOUT variable to your /etc/bashrc configuration file using your favorite editor. Mine is vim: # vim /etc/bashrc # Set TMOUT to 600 seconds (10 minuets): TMOUT=300

Backup WordPress website procedure for Linux

February 1, 2013July 15, 2013 ~ tadmin ~ 2 Comments

To backup your WordPress website on Linux you can follow these steps: 1. Log in via ssh to your server. 2. Change directory where your website files are located. For example: $ cd /home/shkodenko/public_html 3. Find out MySQL connection settings using command: $ grep -ni "DB" ./wp-config.php You will need these lines below. 19:define(‘DB_NAME’, ‘db_name’); … Continue reading Backup WordPress website procedure for Linux

Android 4 or later how to take screenshot

January 16, 2013 ~ tadmin

To take screenshot on Android 4 or later press and hold the Volume Down and Power buttons at the same time.

Linux FTP ProFtpd server configuration: enable display hidden files

January 2, 2013December 6, 2016 ~ tadmin

I have been working with some Linux servers with Plesk control panel. By default ProFtpd FTP server is configured to not display hidden files. To fix this edit ProFtpd main configuration file /etc/proftpd.conf add line below: ListOptions “-a” inside <Global> </Global> section. Check ProFtpd configuration using command: Checking syntax of configuration file Syntax check complete. … Continue reading Linux FTP ProFtpd server configuration: enable display hidden files

Linux: check system, PHP and MySQL date and time

December 11, 2012December 18, 2014 ~ tadmin

Sometimes it can be useful to verify if system, PHP and MySQL date and time is synced. I am using this set of commands to check: Also, it can be useful to check the same information on remote server without logging in to it. It can be done using the same above set of commands … Continue reading Linux: check system, PHP and MySQL date and time

Linux: how to kill hanged process

November 30, 2012April 2, 2013 ~ tadmin ~ 1 Comment

Sometimes, when I am working on Linux, some programs are hanging system, so further work is impossible. I am using this set of commands to find out PID and other data of hanged process in good readable format (KeePass as example): $ ps aux |head -n 1; ps aux |grep -v grep |grep -i pass … Continue reading Linux: how to kill hanged process

MySQL error: failed to connect to server on ‘xxx.yyy.zzz.aaa’ (113)

November 28, 2012November 28, 2012 ~ tadmin

Sometimes using MySQL Workbench I am getting this kind of errors: Failed to Connect to MySQL at xxx.yyy.zzz.aaa:3306 with user db_user Can’t connect to MySQL server on ‘xxx.yyy.zzz.aaa’ (113) To fix it add configuration directive: skip_name_resolve = off to main MySQL configuration file /etc/my.cnf using your favorite text editor (mine is Vim). to section [mysqld] … Continue reading MySQL error: failed to connect to server on ‘xxx.yyy.zzz.aaa’ (113)