Question: What is GECOS in Linux ? How to set GECOS for user on Linux ? Answer: GECOS in linux is also known as comment field for User.The comment or GECOS field is used for informational purpose. In comments field generally we write the information related to user for eg. employee id,phone number,department name,branch name…
After spending lot of time on this issue.I finally found the solution to print double hyphen sign simultaneously in post of Octopress.Octopress uses markdown as a default text editor.In recent time,Octopress come up as a promising bloging platform.I was working on my staging blog which is based on Octopress. While writing the post in Octopress,I…
In this tutorial we will learn, how to show post excerpt in atoms feed of octopress. After installing Octporess in Linux system, I am still exploring many things. For blogging platform,I mostly use and install wordpress.In recent time,the octopress came up with promising new blogging platform. It is quite obvious some good features of WordPress,I…
In this tutorial we will use Squid proxy server to block websites listed in file. Here,we will list the website in a file called “restricted-sites.squid”. In our last post we have already setup the squid transparent proxy. The How to guide will help to install and configure the latest Squid Server. Advantage of using file…
In this tutorial,we will learn about how to install and configure transparent squid proxy server on RHEL/CentOS 6.x .In this practical,we will install Squid version 3.5.0 package in CentOS 6.5 / RHEL 6.5 . Squid server are designed to run in Unix like operating system. Up to version 2.7, Windows Operating System was supportive. Till…
In this tutorial we will learn,how to free pagecache, dentries and inodes from memory on linux systems. The linux system is quite capable to manage the memory itself.Sometimes we require to flush the cache from memory in linux system . On writing the file /proc/sys/vm/drop_caches cause the kernel to drop clean caches, dentries and inodes…
In this post we will learn, how to create new directory in Linux system.Directory also called as folder(In Windows System). To create a new directory in Linux system we will use the command called mkdir. By using some options with mkdir command, we can do many things. To create a directory in Linux Use the…
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory While working on setting new squid transparent proxy in network.I faced an unusual error while restarting the Squid service. The getcwd() function copies an absolute pathname of the current working directory to the array pointed to by buf, which is…
In this tutorial, we will setup Owncloud 6 with self signed SSL certificate on Ubuntu 13.10 Server.In other words,setting HTTPS for Owncloud 6 in Ubuntu 13.10 Server.In recent months, Owncloud 6 has been released.In our last post,we have already written document on “how to install Owncloud 6 in Ubuntu 13.10 Server“.Hence, we expect,you have already…
After installing the Squid Version 3.5.0 in CentOS 6.5. I got the issue,squid service failed to start/restart. Generally, after installing the package with by-default configuration,we can start/stop/restart the service without any problem.This time squid gave me trouble here. I checked the /var/log/messages and there was no sufficient logs giving any hint. In other words,I have…
In this tutorial we will learn, how to install and configure rsyslog 7.6 version on RHEL 6.5/CentOS 6.5 .The scenario is,install and setup rsyslog Centralized Logging Server in RHEL/CentOS 6.5. All the logs from client servers will be sent to Centralized logging server i.e rsyslog server. Check Pre-installed rsyslog package Step 1: First of all…
While configuring the rsyslog, without verifying we hit the semanage command. And result was with error – bash: semanage: command not found . The method is applicable to Red Hat based operating system like RHEL 6 and CentOS 6.
Today,while working in cloud server.I faced an issue.I was copying some files to s3bucket,which I have mounted by using s3fs package. One every copy command(i.e cp),I was getting error – fatal error: error writing to /tmp/ccwAjc9Z.s: No space left on device. The problem was not new for me.I have seen this problem earlier also.The problem…
In this post we will learn, how to uninstall s3fs package in Linux system.The method is simple and require some attention before executing the command. What is s3fs s3fs is a FUSE-based file system.It is primarily used for mounting Amazon S3 bucket into the Unix based system. Note : Upper case characters are not supported…
In this post we will learn, how to backup and restore iptables on Linux systems .As a Linux System Administrator,it is important to understand iptables. With iptables,you can secure the Linux Operating System.In this post,we have written a quick way to take backup and restore the iptables in Linux systems. iptables is a user space…