How to configure FTP server in CentOS 6.3 – vsftpd server vsftpd, which stands for “Very Secure FTP Daemon”,vsftp is an FTP server for Unix-like systems, including Linux. It is licensed under the GNU General Public License. It supports IPv6 and SSL. vsftpd supports explicit (since 2.0.0) and implicit (since 2.1.0) FTPS. vsftpd is the…
In this post we will learn how to encode and decode the strings with base64. We will also see some example on this as well. Introduction Base64 is a group of similar encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. The Base64 term originates from…
How To Add duckduckgo Search engine in WordPress Blog or website Adding the duckduckgo search engine is very simple process. (1) Visit this link https://duckduckgo.com/search_box (2) Fill up the fields as per your requirement. (3) Copy the code and just paste it into text widget of wordpress . After this place the text widget in…
You may have encounter with mail command not found in Red hat, CentOS, Rocky Linux, Ubuntu, Debian .Whenever any message says while hitting the command as Command Not Found , it means the package is not installed or script is not present. We use mail command to send the email from the terminal. It is…
After doing minimal installation of CentOS 6.3 server ,we were not able to do scp from my client machine to CentOS server.It was simply showing the error – “scp command not found”. This thing has happened earlier when we have used the CentOS 6. When it was occur last time with us in CentOS 6.0…
How to change hostname or FQDN in CentOS and Redhat In this tutorial we will learn about,how to change Hostname or FQDN in CentOS and Red Hat. The method is applicable to all Red Hat based operating system. I have described about difference between hostname and FQDN which you can read from this post (The…
Mostly I use firefox and few days back I was working on RSS feed burner of my this Blog. I tested this blog in Google Chrome and surprised to see an Errr: “This XML file does not appear to have any style information associated with it” I checked my XML file and it looks fine….
The post will explain, how to find cpu processor supporting 64 bit or 32 bit. In modern time, most of application are released with 64 bit compatibility only. Recently Chromium Dev team has announced in google forum about no support to 32 bit version in coming years. You should also know that 64 Bit Operating…
rsync all files,hidden files,symlinks,hardlinks to remotes Linux Server I have used these flags -ravpzHogt along with rsync command many times in server migration. And I always get good results. Key features** (1) Date Time stamp of files and folder remain same as you find in source server. (2) Hidden files or directory recursively transfer to…
Introduction: This post will explain about the /dev/shm and you will also know how to mount /dev/shm in linux system. /dev/shm is nothing but implementation of traditional shared memory concept. It is an efficient means of passing data between programs. One program will create a memory portion, which other processes (if permitted) can access. This…
Installing Nagios-3.4 in CentOS 6.3 This is how to install nagios 3.4 tutorial for installing nagios-3.4 in CentOS 6.3 in a few steps. rpm -ivh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-7.noarch.rpm yum install nagios nagios-devel nagios-plugins* gd gd-devel httpd php gcc glibc glibc-common Bydefualt on doing yum install nagios, in cgi.cfg file, authorized user name nagiosadmin is mentioned and for…
How to find which filesystem is supported by running kernel /proc/filesystems is the file which is used to detect the filesystems supported by running kernel. The nodev represent the file system is not assoicated with any disk partition for eg. /dev/sda1 In below given output, you can find out the ext3,ext4 and fuseblk can be…
subtract integer written in columns from 2 different files This is an eg. of subtracting the integer value in column of file1 and file2. root@tuxworld:/mnt# for i in `seq 1 5`;do echo $i >> file1;done root@tuxworld:/mnt# for i in `seq 0 4`;do echo $i >> file2;done root@tuxworld:/mnt# cat file1 1 2 3 4 5 root@tuxworld:/mnt#…
In this post we will explain about UUID and to check UUId of disk partition in Linux systems. A universally unique identifier (UUID) is an identifier standard used in software construction, standardized by the Open Software Foundation (OSF) as part of the Distributed Computing Environment (DCE). The intent of UUIDs is to enable distributed systems…
In this article, we will learn how to lock user login after failed login attempts in Red Hat and CentOS. It is a security practice, which is important to implement in critical servers.