web development and system administration of Linux
To mount Windows samba share on Linux: 1. Log in as root administrator user. 2. Create mount point: # mkdir -pv /mnt/share_name 3. Mount share to it using command: # mount -t cifs -o username=User,password=Password //192.168.0.123/share_name /mnt/share_name 4. Use files from Windows share located in /mnt/share_name Note, User should have access to Windows share //192.168.0.123/share_name
To disable Dr Web update cron notifications via e-mail in Plesk for Linux: 1. Edit file Dr Web configuration file /etc/drweb/drweb32.ini using your favorite editor. Mine is vim: # CronSummary = yes # —> CronSummary = no 2. Edit file /etc/cron.d/drweb-update and add to the end of string >/dev/null 2>&1 */30 * * * * … Continue reading Plesk for Linux: disable Dr Web update cron notifications
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
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
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;
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
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
To take screenshot on Android 4 or later press and hold the Volume Down and Power buttons at the same time.
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
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
