The bash history is a log file that contains all commands that a user executed on the Linux BASH shell. When you use the "arrow up" key on your keyboard, then Bash will look up the previous command from that file and display it on the screen. You just have to press "Enter" to execute ... Read more
If you run a firewall on your Linux server and want to use passive FTP connections, you have to define the passive port range in pure-ftpd and your firewall to ensure that the connections don't get blocked. The following example is for pure-ftpd on Debian or Ubuntu Linux and ISPConfig 3. Set Passive Port Range ... Read more
YARN package manager is a tool for managing yarn. The acronym stands for “Yet Another Resource Negotiator”, and that is what the package manager does: it negotiates with other packages to determine which will consume resources and when without user intervention. The design of this system was inspired by Node’s npm and Python’s pip, but ... Read more
Mono Framework is an open-source software framework that can be used to create all kinds of Server and Desktop applications, incl. games. Mono Framework is dependency-free (No C++ compiler required) and compatible with Windows, Linux, Mac OS X and FreeBSD. Mono Framework started as a fork of Microsoft’s .Net Framework v1.0 but now has become ... Read more
A database is a place where you store information. Cassandra is a type of database that is different from most databases because it does not use tables. Cassandra was developed by Facebook in 2008 as part of Facebook’s Open Compute Project. Cassandra is a NoSQL database that combines the speed of a key-value store with ... Read more
The ISPConfig update script is an easy way to update an ISPConfig 3 installation. If you want to make a manual backup of ISPConfig, see the instructions at the end of the article. This tutorial applies to ISPConfig 3.0, ISPConfig 3.1, and also ISPConfig 3.2. To update ISPConfig 3, log in as root user on ... Read more
The following article describes the steps that need to be taken to debug ISPConfig 3 server scripts. This procedure applies to all ISPConfig 3 versions incl. ISPConfig 3.1 and ISPConfig 3.2. Enable the debug Loglevel in ISPConfig Login to the ISPConfig interface and set the log level to Debug under System > System > Server ... Read more
I've got the following error message on Debian Linux with Courier IMAP server: Filesystem notification initialization error -- contact your mail administrator (check for configuration errors with the FAM/Gamin library) when I tried to access an IMAP share. The reason for the problem seems to be that the "fam" package was not working correctly. The ... Read more
The Nginx web server has a max. body size limit of 1 MB for requests as default. This might be too low for file uploads in scripts and you will see the following error message when you try to upload a file: 413 Request Entity Too Large The configuration variable for this option is "client_max_body_size" ... Read more
Linux user quotas can be edited with the commands edquota or setquota on the shell. While edquota opens the quota settings in an editor like vim, setquota allows you to specify the quota settings on the command line. Example for disabling the quota for the user "testuser": setquota -u testuser 0 0 0 0 -a ... Read more