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linux

Linux Check Disk Space Command To View System Disk Usage

April 21st, 2020 2
recently switched from a Windows server to a Linux server operating system and need Linux check disk space command. I am using Ubuntu LTS 16.04 and CentOS 7.x server. How do I find out disk space utilization information using command line option? Linux offer the following commands to check...
linux

How to Use Linux’s screen Command

April 10th, 2020 0
With the Linux screen command, you can push running terminal applications to the background and pull them forward when you want to see them. It also supports split-screen displays and works over SSH connections, even after you disconnect and reconnect! What Is the screen...
linux

How to Use the dig Command on Linux

April 10th, 2020 0
The Linux dig command allows you to query DNS servers and perform DNS lookups. You can also find the domain an IP address leads back to. We’ll show you how! How the dig Command Works People use the Linux dig command to query Domain Name System...
linux

5 Commands For Checking Memory Usage In Linux

April 10th, 2020 0
The Linux operating system includes a plethora of tools, all of which are ready to help you administer your systems. From simple file and directory tools to very complex security commands, there’s not much you can’t do on Linux. And, although regular desktop users may not need to become...
linux

how to get real ip of user when you enable Cloudflare CDN for Nginx/Apache

April 7th, 2020 0
Nginx part: check if your nginx has http_realip_module.use command nginux -V # nginx -V nginx version: nginx/1.14.2 built by gcc 4.4.7 20120313 (Red Hat 4.4.7-23) (GCC) built with OpenSSL 1.1.1a 20 Nov 2018 TLS SNI support enabled configure arguments: --prefix=/usr/local/nginx --user=www...
linux

centos firewall configuration

March 17th, 2020 0
1 check firewall service statussystemctl status firewalld 2 check firewall status firewall-cmd --state 3 open,restart,close firewalld service # start service firewalld start # restart service firewalld restart # close service firewalld stop 4 check firewall rulesfirewall-cmd...
linux

Recursive change of permissions for folders and subfolders under Linux

June 6th, 2019 0
We use chmod command to change permissions of folders and files. [email protected]:~# chmod --help Usage: chmod … MODE… FILE… or: chmod … OCTAL-MODE FILE… or: chmod … --reference=RFILE FILE… Change the mode of each FILE to MODE. With --reference, change the mode of each FILE to...
linux

how to configure local Yum source and external network source in Linux

June 6th, 2019 0
Local source configuration method Go into /etc/yum.reps.d/ directory and create a file ending with .repo.The content like follow. name=cdrom #cdrom is notes.it can write casually. baseurl=file:///mnt/ #local cdrom's path. path of the yum source. enabled=1 gpgcheck=0 ...
linux

show the color when run ls under linux

May 21st, 2019 19
Sometimes when we run ls to list files.There's only black background with white words.We can't see file/dir or executable easyly. There's a file named .bashrc under user folder.Such like /root/.bashrcWe can modify this file and add a command line.alias ls='ls --color' After reboot...
linux

how to run a task automatic when system boot

May 21st, 2019 0
Sometimes we need run some commands automatic when system boot up. We can put the command or script into /etc/rc.locallike:vi /etc/rc.localadd command line into filemount --bind /var/www/html/ /home/ftpuserThis will mount web base dir to ftp base dir automatic when system startup. And don't...
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