Posts published by: Alejandro Liu

How to encrypt linux partitions with LUKS

There are plenty of reasons why people would need to encrypt a partition. Whether they're rooted it in privacy, security, or confidentiality, setting up a basic encrypted partition on a Linux system is fairly easy. This is especially true when using LUKS, since its functionality is built directly into the kernel. Installing Cryptsetup ...

Open Source Alternatives to Visio

Need to create diagrams, flowcharts, circuits, or other kinds of entity-relationship models? Microsoft Visio is without a doubt the best software for that, but that doesn't mean it's the best choice for you. Visio may be the industry standard in the corporate world, but it comes with a huge drawback: it's expensive ($299 for the standard ...

Ascii Art Tools

Here are some resources dealling with ASCII art... AsciiToSVG - PHP code to convert ascii art into SVG. AsciiFlow - Web App implement an ascii art editor. ...

6 Cloud-Based Tools To Help You Build A Web App With Ease

In just a relatively short amount of time, building mobile apps has transformed from a process that included lots of knowledge in developing into something that almost anyone can do. Cloud-based tools are quickly becoming the norm for app developers, and these are some of the highest recommended tools, each one being ideal for certain developers. ...

using cachefiles on an Linux NFS share

If you often mount and access a remote NFS share on your system, you will probably want to know how to improve NFS file access performance. One possibility is using file caching. In Linux, there is a caching filesystem called FS-Cache which enables file caching for network file systems such as NFS. FS-Cache is built into the Linux kernel 2.6.30 and higher. ...

Rollback with YUM History Command

From 2daygeek.com Server patching is one of the important task of Linux system administrator to make the system more stable and better performance. All the vendors used to release security/vulnerabilities patches very often, the affected package must be updated in order to limit any potential security risks. Yum (Yellowdog Update Modified) is RPM Package Management utility for CentOS and Red Hat systems, Yum history command allows administrator to rollback the system to a previous state but due to some limitations, rollbacks do not work in all situations, or The yum command may simply do nothing, or it may remove packages you do not expect. I advise you to take a full system backup prior to performing any update/upgrade is always recommended, and yum history is NOT meant to replace systems backups. This will help you to restore the system to previous state at any point of time. n some cases, the hosted applications might not work properly or through some error due to recent patch updates (It could be some library incompatibility or package upgrade), what will be the solution in this case? Get in touch with App Dev team and figure it out an issue creating library' and packages then do the rollback with help of yum history command. ...

SeedBoxes

A seedbox is a dedicated server at a high speed datacenter with a public IP address for the downloading and seeding of bittorrent files. Persons who have access to a seedbox can download these files to their personal computers at any time and from any place that has an internet connection. References: ...

Securing rsync on ssh

Reference: positon.org You have 2 systems and you want to set up a secure backup with rsync + SSH of one system to the other. Very simply, you can use: backup.example.com# rsync -avz --numeric-ids --delete [email protected]:/path/ /backup/myserver/ To do the backup, you have to be root on the remote server, because some files are only root readable. Problem: you will allow backup.example.com to do anything on myserver.example.com, where just read only access on the directory is sufficient. ...

Telegram

Telegram is a messenger designed to overcome the limitations of other messengers like WhatsApp or similar ones. It is different and better than other messengers on more than one level. A few of the important features that make it stand out among other messengers are: ...

Free Clipart sites

In 2014, Microsoft killed and buried Clipart in the digital graveyard. Clipart had outlived its usefulness as users relied more on search engines than Microsoft' somewhat limited supply through the Office suite. Today' clipart needs to be modern, colorful, and less cartoonish. An ...