Man pages are written by sys-admin and developers for IT techs, and are intended more as a reference than as a how to. Man pages are very useful for people who are already familiar with Linux, Unix, and BSD operating systems. Use man pages when you just need to know the syntax for particular commands or configuration file, but they are not helpful for new Linux users. Man pages are not good for learning something new for the first time. Here are thirty best documentation sites on the web for learning Linux and Unix like operating systems.
BASH for loop works nicely under UNIX / Linux / Windows and OS X while working on set of files. However, if you try to process a for loop on file name with spaces in them you are going to have some problem. for loop uses $IFS variable to determine what the field separators are. By default $IFS is set to the space character. There are multiple solutions to this problem.
Cheat sheet act as a reference tool which provides cut and paste kind of commands to complete a specific task. I often recommend following set of best cheat sheets to students and IT professionals. It include Linux / UNIX command and shell scripting.
I’ve already written about tentakel tool and shell script hack to run a single command on multiple Linux / UNIX / BSD server. This is useful to save time and run UNIX commands on multiple machines. Linux.com has published an article about a new tool called pssh:
If you want to increase your productivity with SSH, you can try a tool that lets you run commands on more than one remote machine at the same time. Parallel ssh, Cluster SSH, and ClusterIt let you specify commands in a single terminal window and send them to a collection of remote machines where they can be executed.
UNIX or Linux distros offers many flavors. Managing many UNIX like operating systems can be difficult. Here are few tips about selecting one perfect operating system for your business and sticking it with to save both money and time.
AdvFS is a file system that was developed by Digital Equipment Corp and continues to be part of HP’s Tru64 operating system. AdvFS has been released under GPL v2.
Intelligent Platform Management Interface (IPMI) is a hardware level interface specification that defines a common, abstracted, message-based interface to platform monitoring and control functions. Both IPMI and KVM over IP can be used in emergency situations.
