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To display the current version of Linux (kernel) running on your system, run this command. # uname -sr You can list all kernel images installed on your system like this. [ … ]

Currently, there are three supported versions of PHP, i.e. PHP 5.6, 7.0, and 8.0. Meaning PHP 5.3, 5.4, and 5.5 have all reached the end of life; they are no [ … ]

How do I check if your Linux guest is physical or virtual. To The  know the Type of Virtualization, Install  Virt-what Tool For Ubuntu/Debian Linux: #apt-get install virt-what For CentOS/RHEL [ … ]

In centos Install the required packages with below command yum install  whois Then enter the below command to check domain expiry date whois google.com | grep “Registry Expiry Date” | [ … ]

1)To Clear PageCache only echo 1 > /proc/sys/vm/drop_caches 2)To Clear dentries and inodes. echo 2 > /proc/sys/vm/drop_caches 3) To  Clear PageCache, dentries and inodes. # sync; echo 3 > /proc/sys/vm/drop_caches [ … ]

To copy from one server to other server with incremental based we can go with rsync as shown below. rsync -avz username@IP:/var/www/html/Foldername/*   2019bkp/  &

Info: With the -f, –force option the logrotate will force the rotation of files even if they do not meet the specified criteria such as minsize, age, etc. logrotate –force [ … ]

logrotate -d /etc/logrotate.d/apache2.conf(to log rotate manually) OR cd /etc/logrotate.d logrotate –force kannelnum (Manual Logrotate) cat /etc/logrotate.d/kannel801 ——————————- /var/log/kannel/kannellog/access45.log {hourly missingok rotate 7 compress delaycompress #notifempty create 640 root root sharedscripts [ … ]

/etc/logrotate.d/apache2.conf /var/log/apache2/* { weekly rotate 3 size 10M compress delaycompress } The first line indicates that the directives inside the block apply to all logs inside /var/log/apache2: weekly means that [ … ]