How to Change keyboard Language in CentOS 7 (Keymap)

check current keyboard map information use following command recently i installed CentOS 7 and accidentally installed en_gb by default loadkeys us localectl status # to display locale settings localectl set-locale LANG=en_GB.utf8 # to set the Language localectl list-locales # to lists locales localectl list-keymaps # list keyboard mappings localectl set-keymap uk # sets the key m...

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empty a file in linux

use following command to empty file named sample.txt #truncate -s 0 sample....

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Install mod_security in Centos 7

In Fedora Core, CentOS, and Red Hat Enterprise Linux you just need to run following # yum install mod_security when installation complete we can see mod_security.conf file in apache folder # ls -l /etc/httpd/conf.d include this line to httpd.conf file LoadModule security2_module modules/mod_security2.so restart apache # service httpd restart ...

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Install LAMP stack on CentOS 7

first need to install epel-release repo on centos 7 just run following command to install epel yum install epel* after that we can start install LAMP stack on CentOS7 LAMP stand for followings L - Linux (CentOS) A - Apache(httpd) M - Mysql(mysqld) P - PHP now we can install httpd server using following yum install httpd this will install Apache server as httpd service start the httpd service using following command service httpd start start httpd with system bootup use following command chkconfig httpd on add following firewall rules firewall-cmd...

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Linux Networking on terminal and Back with CentOS 7

recently i installed centos 7 and happy to say back to play with linux. so as first step after installation was the configure network. first need to check what are the available interfaces in current system. to check that we can use ifconfing -a command [root@tecmint ~]# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0B:CD:1C:18:5A inet addr:172.16.25.126 Bcast:172.16.25.63 Mask:255.255.255.224 inet6 addr: fe80::20b:cdff:fe1c:185a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 ...

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